bonding device and bonding method

Abstract

This application relates to a bonding device and a bonding method. The bonding device includes a first cover and a second cover. The first cover has a first chamber and a first opening communicating with the first chamber. A plurality of air inlet pipes are arranged at equal intervals around the central axis of the membrane material in the first cover. Each air inlet pipe extends into the first chamber and has an air outlet communicating with the first chamber. Any two adjacent air inlet pipes include a first air inlet pipe located upstream and a second air inlet pipe located downstream. The air outlet of the first air inlet pipe faces a flow guide component located between the first and second air inlet pipes. The flow guide component and the second air inlet pipe cooperate to guide the airflow from the air outlet of the first air inlet pipe to flow in a swirling manner in a direction pointing towards the central axis of the membrane material, so as to fit and press the membrane material onto the curved substrate, which can overcome problems such as air bubbles caused by processing accuracy errors of the curved substrate and the molding fixture.

Description

Technical Field

[0001] This application relates to the field of bonding process technology, and in particular to a bonding device and bonding method. Background Technology

[0002] In traditional curved surface bonding processes, a contour jig 40 corresponding to the curved surface of the curved substrate 20 is used to press the film material 30 onto the curved substrate 20 (e.g., ...). Figure 1 (As shown). However, the curved substrate 20 and the contour jig 40 have machining accuracy errors (such as... Figure 2 As shown in the figure, this can cause air bubbles between the membrane material 30 and the curved substrate 20, and may even damage the membrane material 30 or the curved substrate 20. Summary of the Invention

[0003] Therefore, it is necessary to provide a bonding device and bonding method to address the problem that air bubbles may exist between the membrane material and the curved substrate due to processing accuracy errors in the curved substrate and the molding fixture, which may even lead to damage to the membrane material or the curved substrate.

[0004] According to one aspect of this application, a bonding apparatus is provided for pressing a film material onto a curved substrate, the bonding apparatus comprising:

[0005] A first cover and a second cover, wherein the first cover has a first chamber and a first opening communicating with the first chamber; the second cover has a second chamber for accommodating the curved substrate and a second opening communicating with the second chamber; one end of the first cover with the first opening is sealed to one end of the second cover with the second opening, and the outer periphery of the membrane material is sandwiched between the one end of the first cover with the first opening and the one end of the second cover with the second opening, so as to respectively block the first opening and the second opening;

[0006] Multiple air inlet pipes are arranged at equal intervals around the central axis of the membrane material in the first cover; each air inlet pipe extends into the first chamber and is provided with an air outlet connected to the first chamber;

[0007] Multiple flow guiding components, each of which is disposed in the first chamber and located between two adjacent air inlet pipes;

[0008] Any two adjacent air inlets include a first air inlet on the upstream side and a second air inlet on the downstream side. The air outlet of the first air inlet faces the flow guide component located between the first air inlet and the second air inlet. The flow guide component and the second air inlet cooperate to guide the airflow from the air outlet of the first air inlet to flow in a swirling manner toward the central axis of the membrane material, so as to fit and press the membrane material onto the curved substrate.

[0009] In one embodiment, the first cover has N inner sidewalls, the N inner sidewalls enclosing the first cavity, and the N inner sidewalls forming a regular polygon structure with N sides;

[0010] The air intake pipes are respectively provided on the inner side wall;

[0011] The flow guiding component has an arc-shaped flow guiding surface. The two ends of the arc-shaped flow guiding surface of each flow guiding component are respectively connected to two adjacent inner sidewalls and are tangent to the two adjacent inner sidewalls.

[0012] The air outlet of the air inlet pipe is arranged facing the arc-shaped guide surface of the adjacent guide component;

[0013] Where N is a positive integer greater than 2.

[0014] In one embodiment, the plane of the air outlet of each air inlet pipe is set at a preset angle to the corresponding inner sidewall.

[0015] In one embodiment, the preset angle is 15°-90°.

[0016] In one embodiment, the preset angle is 45°.

[0017] In one embodiment, the air intake pipe includes a first portion located outside the first cover and perpendicular to the corresponding inner sidewall, and a second portion connected to the first portion and extending into the first chamber;

[0018] The second portion extends in a curved manner relative to the first portion to form the air outlet at the end of the second portion away from the first portion, facing the adjacent arcuate guide surface.

[0019] In one embodiment, the sidewall of the second part is provided with an arc-shaped drainage surface, and the arc-shaped drainage surface is connected to the first part of the air inlet pipe and the air outlet on opposite sides along its arc length direction.

[0020] In one embodiment, N is 4, and the four inner sidewalls form a square structure, wherein the radius of the arc-shaped guide surface is equal to one-quarter of the side length of the square structure.

[0021] In one embodiment, the bonding device further includes at least one sealing ring disposed between the end of the first cover with the first opening and the end of the second cover with the second opening, so as to seal the end of the first cover with the first opening and the end of the second cover with the second opening.

[0022] In one embodiment, the bonding device further includes two sealing rings, which are stacked and disposed between the end of the first cover where the first opening is provided and the end of the second cover where the second opening is provided;

[0023] The outer periphery of the membrane material is sandwiched between the two sealing rings.

[0024] According to another aspect of this application, a bonding method is provided, which uses the bonding device according to any one of claims 1-10 to perform bonding, the bonding method comprising:

[0025] Gas is introduced into the plurality of air inlets so that the first air pressure in the first chamber is greater than the second air pressure in the second chamber, and the membrane material is able to fit and adhere to the curved substrate under the pressure difference between the first air pressure and the second air pressure.

[0026] In one embodiment, the pressure difference between the first pressure and the second pressure is 0.5-2.0 MPa.

[0027] In the above-described bonding device and method, when using the bonding device, the curved substrate and the film material are first aligned so that the center line of the curved substrate and the center axis of the film material coincide, so that the film material can be pressed and adhered to the curved substrate. Then, gas at a certain pressure is simultaneously introduced into multiple air inlets. The gas flowing into the air inlets can flow into the first chamber from the air outlets of the multiple air inlets, making the first air pressure in the first chamber greater than the second air pressure in the second chamber. Since any two adjacent air inlets include a first air inlet on the upstream side and a second air inlet on the downstream side, the gas flowing out of the outlet of the first air inlet can flow in a swirling manner toward the central axis of the membrane material through the guide component and the guide of the second air inlet, so as to match and press the membrane material onto the curved substrate. In this way, the gas flowing out of multiple air inlets can all flow in a swirling manner toward the central axis of the membrane material through the guide component and the guide of the corresponding second air inlet, so that the gas can be collected above the center of the membrane material and flow toward the central area of ​​the membrane material, so that the membrane material can be matched and pressed onto the curved substrate under the pressure difference between the first chamber and the second chamber. In this process, the bonding device can effectively control the airflow direction. The airflow flowing towards the center area of ​​the membrane material can press the center area of ​​the membrane material downwards towards the curved substrate, which can effectively expel the air bubbles generated during the bonding process. This allows the membrane material to be bonded to the curved substrate very well, overcoming problems such as air bubbles caused by processing accuracy errors of the curved substrate and the molding fixture. It can also avoid the situation of uncontrollable instantaneous airflow that occurs in the single-hole air intake method in the prior art, avoid the generation of air bubbles or unstable shaping of the membrane material during the bonding process, and also avoid damage to the membrane material or the curved substrate. Attached Figure Description

[0028] Figure 1 A schematic diagram of the structure of the existing contour jig, membrane material, and curved substrate is shown (first method);

[0029] Figure 2 A schematic diagram of the structure of a contour jig and a curved substrate in the prior art is shown (first method);

[0030] Figure 3 A schematic diagram of the structure of the existing contour jig and curved substrate is shown (second method);

[0031] Figure 4 A diagram illustrating the airflow principle of membrane material being pressed onto a curved substrate in the prior art (second method) is shown;

[0032] Figure 5 A schematic diagram of the bonding device in one embodiment of this application is shown (before bonding);

[0033] Figure 6 A top view of the bonding device according to an embodiment of this application is shown;

[0034] Figure 7 A schematic diagram of the bonding device (after bonding) in one embodiment of this application is shown;

[0035] Figure 8 A schematic diagram of the structure of the first cover and the second cover in one embodiment of this application is shown;

[0036] Figure 9 It shows Figure 8 An enlarged schematic diagram of point A.

[0037] In the diagram: 10. Adhesion device; 132. Second air intake pipe;

[0038] 110. First enclosure; 133. First part;

[0039] 111. First chamber; 134. Second part;

[0040] 112. First opening; 1341. Arc-shaped drainage surface;

[0041] 113. Inner wall; 1342. Drainage plane;

[0042] 114. Protrusion; 140. Flow guiding component;

[0043] 120. Second cover; 141. Arc-shaped airflow guide surface;

[0044] 121. Second chamber; 150. Sealing ring;

[0045] 122. Second opening; 20. Curved substrate;

[0046] 123. Groove; 21. Support base;

[0047] 130. Intake pipe; 30. Membrane material;

[0048] 1301, air outlet; 40, molded fixture.

[0049] 131. First air intake pipe; Detailed Implementation

[0050] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0051] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0052] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0053] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0054] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0055] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0056] In traditional curved surface bonding processes, two methods are typically used for curved surface bonding. The first method involves pressing the film material 30 onto the curved surface substrate 20 using a contour jig 40 that corresponds to the curved surface of the substrate 20 (e.g., ...). Figure 1 (As shown). However, the curved substrate 20 and the contour jig 40 have machining accuracy errors (such as... Figure 2 As shown in the figure, this can cause air bubbles between the membrane material 30 and the curved substrate 20, and may even damage the membrane material 30 or the curved substrate 20.

[0057] The second method is as follows: Figure 3 and Figure 4 As shown, the membrane material 30 is pressed onto the curved substrate 20 using air pressure.

[0058] The inventors of this application discovered through research that the first method is prone to air bubbles between the membrane material 30 and the curved substrate 20 due to processing accuracy errors in the curved substrate 20 and the molding fixture 40, and may even lead to damage to the membrane material 30 or the curved substrate 20. The second method is typically a single-hole air intake method, which is prone to situations where the instantaneous airflow becomes uncontrollable (e.g., ...). Figure 3 and Figure 4 (As shown), this can cause the initial pressure point to deviate from the center area of ​​the membrane material 30, which can easily lead to air bubbles or unstable shaping of the membrane material 30 during the bonding process.

[0059] In order to solve the above-mentioned technical problems, the inventors of this application have conducted in-depth research and designed a bonding device 10, which can use the cooperation of the air inlet pipe 130 and the flow guiding component 140 to guide the flow in a swirling manner toward the central axis of the membrane material 30, so as to match and press the membrane material 30 onto the curved substrate 20, avoid the generation of air bubbles between the membrane material 30 and the curved substrate 20, and also avoid damage to the membrane material 30 or the curved substrate 20.

[0060] Figure 5 A schematic diagram of the bonding device 10 in one embodiment of this application is shown.

[0061] Please see Figure 5 , Figure 6 and Figure 7An embodiment of this application provides a bonding device 10 for pressing a membrane material 30 onto a curved substrate 20. The bonding device 10 includes a first cover 110, a second cover 120, a plurality of air inlet pipes 130, and a plurality of flow guiding components 140.

[0062] The first cover 110 has a first chamber 111 and a first opening 112 communicating with the first chamber 111. The second cover 120 has a second chamber 121 for accommodating the curved substrate 20 and a second opening 122 communicating with the second chamber 121. One end of the first cover 110 with the first opening 112 is sealed to the other end of the second cover 120 with the second opening 122. The outer periphery of the membrane material 30 is sandwiched between the end of the first cover 110 with the first opening 112 and the other end of the second cover 120 with the second opening 122, thereby sealing the first opening 112 and the second opening 122 respectively. This arrangement forms a closed first chamber 111 and a closed second chamber 121.

[0063] Multiple air inlet pipes 130 are arranged at equal intervals around the central axis of the membrane material 30 in the first cover 110. The air inlet pipes 130 extend into the first chamber 111 and are provided with an air outlet 1301 that communicates with the first chamber 111.

[0064] Each flow guide 140 is disposed within the first chamber 111 and located between two adjacent air inlets 130. Any two adjacent air inlets 130 include a first air inlet 131 located upstream and a second air inlet 132 located downstream. The outlet 1301 of the first air inlet 131 faces the flow guide 140 located between the first air inlet 131 and the second air inlet 132. The flow guide 140 and the second air inlet 132 cooperate to guide the airflow from the outlet 1301 of the first air inlet 131 to flow in a swirling manner toward the central axis of the membrane material 30, so as to fit and press the membrane material 30 onto the curved substrate 20.

[0065] When using the bonding device 10, the curved substrate 20 and the film material 30 are first aligned so that the center line of the curved substrate 20 coincides with the center axis of the film material 30, so that the film material 30 can be pressed onto the curved substrate 20. Then, a certain pressure of gas is simultaneously introduced into multiple air inlet pipes 130. The gas flowing into the air inlet pipes 130 can flow into the first chamber 111 from the air outlets 1301 of the multiple air inlet pipes 130, so that the first air pressure in the first chamber 111 is greater than the second air pressure in the second chamber 121. Since any two adjacent air inlets 130 include a first air inlet 131 located upstream and a second air inlet 132 located downstream, the gas flowing out of the outlet 1301 of the first air inlet 131 can flow in a swirling manner toward the central axis of the membrane material 30 through the guide member 140 and the guide of the second air inlet 132, so as to match and press the membrane material 30 onto the curved substrate 20. In this way, the gas flowing out from multiple air inlets 130 can all flow in a swirling manner toward the central axis of the membrane material 30 through the guide member 140 and the guide of the corresponding second air inlet 132, so that the gas can gather above the center of the membrane material 30 and flow toward the central region of the membrane material 30, so that the membrane material 30 can be matched and pressed onto the curved substrate 20 under the pressure difference of the first chamber 111 and the second chamber 121. During this process, the bonding device 10 can effectively control the airflow direction. The airflow flowing towards the center area of ​​the membrane material 30 can press the center area of ​​the membrane material 30 downwards towards the curved substrate 20, which can effectively expel air bubbles generated during the bonding process, allowing the membrane material 30 to be adhered very well to the curved substrate 20 (e.g., Figure 7 As shown, this overcomes problems such as air bubbles caused by processing accuracy errors in the curved substrate 20 and the molding fixture 40, and also avoids the situation of uncontrollable instantaneous airflow that occurs in the single-hole air intake method in the prior art. It also avoids the generation of air bubbles or unstable shaping of the membrane 30 during the bonding process, and also avoids damage to the membrane 30 or the curved substrate 20.

[0066] It should be noted that the first intake pipe 131 and the second intake pipe 132 are each one of a plurality of intake pipes 130, specifically as follows: Figure 6 In the illustrated embodiment, the plurality of air intake pipes 130 are counted counterclockwise, with the previous air intake pipe 130 being the first air intake pipe 131 and the next air intake pipe 130 being the second air intake pipe 132. To more clearly illustrate the airflow using the first air intake pipe 131, the second air intake pipe 132, and the flow guide 140 located between the first air intake pipe 131 and the second air intake pipe 132, the first air intake pipe 131 and the second air intake pipe 132 are named separately. This is merely an example and does not limit the scope of this application. Furthermore, in the subsequent description of the air intake pipes 130, it also includes the first air intake pipe 131 and the second air intake pipe 132 having the same features.

[0067] In some embodiments, please refer to Figure 5 and Figure 6 Multiple air intake pipes 130 are arranged in a circular array around the central axis of the membrane material 30.

[0068] In some embodiments of this application, please refer to Figure 6 The first cover 110 has N inner sidewalls 113, which enclose the first chamber 111 and form a regular polygon structure with N sides. The air inlet pipes 130 are correspondingly provided on the inner sidewalls 113. The flow guide component 140 has an arc-shaped flow guide surface 141. The two ends of the arc length direction of the arc-shaped flow guide surface 141 of each flow guide component 140 are respectively connected to two adjacent inner sidewalls 113 and are tangent to the two adjacent inner sidewalls 113. The air outlet 1301 of the air inlet pipe 130 is set towards the arc-shaped flow guide surface 141 of the adjacent flow guide component 140.

[0069] The following description is based on any two adjacent air inlets 130 and the flow guide 140 located between the two adjacent air inlets 130: the gas flowing out of the outlet 1301 of the first air inlet 131 can flow well under the guidance of the arc-shaped flow guide surface 141 of the flow guide 140 through the side of the second air inlet 132 near the first air inlet 131, and can flow in a swirling manner in the direction pointing towards the central axis of the membrane material 30, so as to match and press the membrane material 30 onto the curved substrate 20.

[0070] N is a positive integer greater than 2. If N is 3, the three inner sidewalls 113 form an equilateral triangle structure; if N is 4, the four inner sidewalls 113 form a square structure; if N is 5, the five inner sidewalls 113 form a regular pentagon structure, and so on. This allows the gas flowing from the outlets 1301 of the multiple air inlets 130 to swirl and flow in a direction pointing towards the central axis of the membrane material 30 under the guidance of the arc-shaped guide surface 141 of the corresponding guide component 140, and then flow downwards towards the central area of ​​the membrane material 30. The airflow flowing towards the central area of ​​the membrane material 30 can press the central area of ​​the membrane material 30 downwards towards the curved substrate 20, effectively expelling air bubbles generated during the bonding process, allowing the membrane material 30 to be bonded very well to the curved substrate 20 (e.g., ...). Figure 7 (As shown).

[0071] In some embodiments of this application, please refer to Figure 6 The plane of the air outlet 1301 of each air inlet pipe 130 is set at a preset angle with the corresponding inner wall 113.

[0072] The air outlet 1301 of the air inlet pipe 130 is positioned toward the arc-shaped guide surface 141 of the adjacent guide component 140, and the plane of the air outlet 1301 of the air inlet pipe 130 is set at a preset angle with the corresponding inner sidewall 113. This allows the gas flowing out of the air outlet 1301 of the air inlet pipe 130 to flow toward the adjacent arc-shaped guide surface 141 in a suitable airflow direction, which can better ensure that the airflow flows in a swirling manner toward the central axis of the membrane material 30, so as to match and press the membrane material 30 onto the curved substrate 20.

[0073] In some embodiments of this application, the preset angle is 15°-90°.

[0074] If the preset angle is too small, the gap between the air outlet 1301 of the air inlet pipe 130 and the corresponding inner wall 113 will be too small, resulting in excessive resistance to the gas flowing out of the air outlet 1301 of the air inlet pipe 130, which will affect the flow of air. If the preset angle is too small, the gas flowing out of the air outlet 1301 of the air inlet pipe 130 will have difficulty flowing toward the adjacent arc-shaped guide surface 141, which will affect the control of airflow.

[0075] The preset angle needs to be set within a suitable range to ensure that the gas flowing out of the outlet 1301 of the inlet pipe 130 flows to the adjacent arc-shaped guide surface 141 in a suitable airflow direction, and to make good use of the arc-shaped guide surface 141 of the corresponding guide component 140 and the side of the corresponding second inlet pipe 132 away from its outlet 1301 to guide the flow in a swirling manner toward the central axis of the membrane material 30, so as to match and press the membrane material 30 onto the curved substrate 20.

[0076] With a preset angle of 45°, the arc-shaped flow guide surface 141 of the corresponding flow guide component 140 and the side of the corresponding second air inlet pipe 132 away from its air outlet 1301 can be used to guide the flow in a swirling manner and more accurately in the direction pointing towards the central axis of the membrane material 30, so as to press the membrane material 30 more closely onto the curved substrate 20, which is beneficial to improve the yield of the laminated product (the laminated product is the product formed by pressing the membrane material 30 onto the curved substrate 20 using the lamination device 10 of this application).

[0077] Table 1 below shows a comparison of the yield of the bonded products under different preset angles.

[0078] Table 1. Comparison of product yield under different preset angles.

[0079] Preset angle Product yield 15° 92％ 30° 95％ 45° 98％ 60° 95％ 75° 90％ 90° 90％

[0080] As shown in Table 1, when the preset angle is set to 15°-90°, the yield rate of the bonded product can reach 90% or more, and when the preset angle is set to 45°, the yield rate of the bonded product can reach 98%.

[0081] In some embodiments of this application, please refer to Figure 6 The air intake pipe 130 includes a first portion 133 located outside the first cover 110 and perpendicular to the corresponding inner sidewall 113, and a second portion 134 connected to the first portion 133 and extending into the first chamber 111. The second portion 134 extends in a curved manner relative to the first portion 133 to form an air outlet 1301 facing the adjacent arc-shaped guide surface 141 at one end of the second portion 134 away from the first portion 133.

[0082] With this configuration, the gas flowing out of the outlet 1301 of the first air inlet pipe 131 located on the upstream side can flow in a swirling manner toward the central axis of the membrane material 30 under the guidance of the arc-shaped guide surface 141 of the adjacent guide member 140 and the second part 134 of the second air inlet pipe 132 located on the downstream side, so as to match and press the membrane material 30 onto the curved substrate 20.

[0083] In some embodiments of this application, please refer to Figure 6 The second part 134 has an arc-shaped flow guide surface 1341 on its side wall, which is opposite to the air outlet 1301 of the air inlet pipe 130. The arc-shaped flow guide surface 1341 connects the first part 133 of the air inlet pipe 130 and the air outlet 1301 on opposite sides along its arc length direction, respectively. In this way, the gas flowing out of the air outlet 1301 of the first air inlet pipe 131 located upstream can swirl under the guidance of the arc-shaped flow guide surface 141 of the adjacent flow guide component 140 and the arc-shaped flow guide surface 1341 of the second air inlet pipe 132 located downstream. The airflow flows in a direction pointing towards the central axis of the membrane material 30 to match and press the membrane material 30 onto the curved substrate 20. During this process, the airflow can flow approximately along the tangent direction to the arc-shaped drainage surface 1341 towards the central axis of the membrane material 30 to better control the flow direction of the airflow, so that the airflow can flow towards the central area of ​​the membrane material 30 and press the central area of ​​the membrane material 30 towards the curved substrate 20, effectively expelling the air bubbles generated during the bonding process, so that the membrane material 30 can be adhered to the curved substrate 20 very well.

[0084] In some embodiments of this application, please refer to Figure 6 The second part 134 is also provided with a flow-guiding plane 1342 on its side wall. The gas flowing out from the outlet 1301 of the first air inlet pipe 131 located on the upstream side can flow to the top of the central region of the membrane material 30 under the guidance of the flow-guiding plane 1342 of the second air inlet pipe 132 located on the downstream side, and then flow downward to the central region of the membrane material 30, so as to fit the membrane material 30 neatly onto the curved substrate 20.

[0085] In some embodiments of this application, please refer to Figure 6N is 4, and the four inner sidewalls 113 form a square structure. The radius of the arc of the arc-shaped guide surface 141 is equal to one-quarter of the side length of the square structure.

[0086] The arc radius of the arc-shaped guide surface 141 is set to one-quarter of the side length of the square structure, so that the arc radius of the arc-shaped guide surface 141 is proportional to the size of the square structure (first chamber 111). Then, the gas flowing out of the outlet 1301 of the first air inlet pipe 131 located upstream can flow in a swirling manner towards the central axis of the membrane material 30 under the guidance of the arc-shaped guide surface 141 of the adjacent guide component 140 and the arc-shaped guide surface 1341 of the second air inlet pipe 132 located downstream, which is beneficial to improving the yield of the bonded product.

[0087] In some embodiments of this application, please refer to Figure 8 and Figure 9 The bonding device 10 further includes at least one sealing ring 150, which is disposed between one end of the first cover 110 with the first opening 112 and one end of the second cover 120 with the second opening 122, so as to seal the connection between the one end of the first cover 110 with the first opening 112 and the one end of the second cover 120 with the second opening 122.

[0088] The sealing ring 150 can be used to improve the sealing performance of the first chamber 111 and the second chamber 121, so as to better ensure that the membrane material 30 can be pressed against the curved substrate 20 under the pressure difference between the first chamber 111 and the second chamber 121.

[0089] In some embodiments of this application, please refer to Figure 8 and Figure 9 The bonding device 10 also includes two sealing rings 150, which are stacked between the end of the first cover 110 where the first opening 112 is provided and the end of the second cover 120 where the second opening 122 is provided. The outer periphery of the membrane material 30 is sandwiched between the two sealing rings 150.

[0090] Two sealing rings 150 can be used to protect the membrane material 30, preventing the membrane material 30 from being damaged by being clamped by the first cover 110 and the second cover 120 during the bonding process.

[0091] In some embodiments, please refer to Figure 8 and Figure 9 The first cover 110 has a protrusion 114 at one end where the first opening 112 is provided, and the second cover 120 has a groove 123 at one end where the second opening 122 is provided, which engages with the protrusion 114. The first cover 110 and the second cover 120 are engaged by means of the protrusion 114 and the groove 123.

[0092] Of course, the end of the first cover 110 with the first opening 112 and the end of the second cover 120 with the second opening 122 can also be connected by other detachable methods.

[0093] Both the protrusion 114 and the groove 123 are annular structures. In use, the first sealing ring 150 can be placed on the inner side of the groove 123 on the second cover 120, and the membrane material 30 and the second sealing ring 150 can be stacked on the first sealing ring 150, with the outer periphery of the membrane material 30 located between the two sealing rings 150. Then, the end of the first cover 110 with the first opening 112 and the end of the second cover 120 with the second opening 122 are engaged by means of the protrusion 114 and the groove 123. In this way, the membrane material 30 can be sandwiched between the end of the first cover 110 with the first opening 112 and the end of the second cover 120 with the second opening 122, and the end of the first cover 110 with the first opening 112 and the end of the second cover 120 with the second opening 122 can be sealed and connected, and the membrane material can be prevented from being damaged by the first cover 110 and the second cover 120. In addition, the snap-fit ​​protrusion 114 and groove 123 can also be confined to the outer periphery of the membrane material 30.

[0094] In some embodiments, please refer to Figure 5 The bottom of the second cover 120 is provided with a support seat 21 for supporting the curved substrate 20. The support seat 21 is located in the second chamber 121 and can support the curved substrate 20 well.

[0095] In some embodiments of this application, please refer to Figures 5-7 The bonding device 10 includes a first cover 110, a second cover 120, multiple air inlet pipes 130 and multiple air guiding components 140.

[0096] The first cover 110 has a first chamber 111 and a first opening 112 communicating with the first chamber 111. The second cover 120 has a second chamber 121 for accommodating the curved substrate 20 and a second opening 122 communicating with the second chamber 121. One end of the first cover 110 with the first opening 112 is sealed to the other end of the second cover 120 with the second opening 122. The outer periphery of the membrane material 30 is sandwiched between the other end of the first cover 110 with the first opening 112 and the other end of the second cover 120 with the second opening 122, so as to seal the first opening 112 and the second opening 122 respectively.

[0097] Multiple air inlet pipes 130 are arranged at equal intervals around the central axis of the membrane material 30 in the first cover 110. The air inlet pipes 130 extend into the first chamber 111 and are provided with an air outlet 1301 that communicates with the first chamber 111.

[0098] Each flow guide 140 is disposed within the first chamber 111 and located between two adjacent air inlets 130. Any two adjacent air inlets 130 are located on the upstream side of the first air inlet 131 and the downstream side of the second air inlet 132. The outlet 1301 of the first air inlet 131 faces the flow guide 140 located between the first air inlet 131 and the second air inlet 132. The flow guide 140 and the second air inlet 132 cooperate to guide the airflow from the outlet 1301 of the first air inlet 131 to flow in a swirling manner toward the central axis of the membrane material 30, so as to fit and press the membrane material 30 onto the curved substrate 20.

[0099] The first cover 110 has four inner sidewalls 113, which enclose the first chamber 111 and form a square structure. The plane of the air outlet 1301 of the first air inlet pipe 131 is set at a 45° angle with the corresponding inner sidewall 113, and the radius of the arc-shaped guide surface 141 is equal to one-quarter of the side length of the square structure.

[0100] This configuration allows the gas flowing out of the outlet 1301 of the first air inlet pipe 131 located on the upstream side to swirle in a direction more precisely pointing towards the central axis of the membrane material 30 under the guidance of the arc-shaped guide surface 141 of the adjacent guide component 140 and the arc-shaped guide surface 1341 of the second air inlet pipe 132 located on the downstream side, which can increase the yield of the bonded product to 98%.

[0101] An embodiment of this application provides a bonding method that utilizes the bonding device 10 described above for bonding. The bonding method includes:

[0102] Gas is introduced into multiple air inlets 130 so that the first air pressure in the first chamber 111 is greater than the second air pressure in the second chamber 121, and the membrane material 30 can be matched and adhered to the curved substrate 20 under the pressure difference between the first air pressure and the second air pressure.

[0103] The second chamber 121 can be kept in a vacuum state, and gas with a pressure greater than 1 MPa can be introduced into the air inlet pipe 130, as long as the membrane material 30 can be matched and adhered to the curved substrate 20 under the pressure difference between the first and second air pressures.

[0104] In some embodiments of this application, the pressure difference between the first air pressure and the second air pressure is 0.5-2.0 MPa.

[0105] Excessive pressure difference between the two will lead to excessive energy waste, while insufficient pressure difference will affect the bonding effect of the membrane material 30. Therefore, the pressure difference between the first and second air pressures needs to be set within a suitable range, such as 0.5-2.0 MPa, so as to ensure that the membrane material 30 can be matched and bonded to the curved substrate 20 under the pressure difference between the first and second air pressures, while avoiding excessive energy waste.

[0106] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0107] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A bonding device for pressing a film material onto a curved substrate, characterized in that, The bonding device includes: A first cover and a second cover, wherein the first cover has a first chamber and a first opening communicating with the first chamber; the second cover has a second chamber for accommodating the curved substrate and a second opening communicating with the second chamber; one end of the first cover with the first opening is sealed to one end of the second cover with the second opening, and the outer periphery of the membrane material is sandwiched between the one end of the first cover with the first opening and the one end of the second cover with the second opening, so as to respectively block the first opening and the second opening; Multiple air inlet pipes are arranged at equal intervals around the central axis of the membrane material in the first cover; each air inlet pipe extends into the first chamber and is provided with an air outlet connected to the first chamber; Multiple flow guiding components, each of which is disposed in the first chamber and located between two adjacent air inlet pipes; Any two adjacent air inlets include a first air inlet on the upstream side and a second air inlet on the downstream side. The air outlet of the first air inlet faces the flow guide component located between the first air inlet and the second air inlet. The flow guide component and the second air inlet cooperate to guide the airflow from the air outlet of the first air inlet to flow in a swirling manner toward the central axis of the membrane material, so as to fit and press the membrane material onto the curved substrate.

2. The bonding device according to claim 1, characterized in that, The first cover has N inner sidewalls, which enclose the first chamber and form a regular polygon structure with N sides. The air intake pipes are respectively provided on the inner side wall; The flow guiding component has an arc-shaped flow guiding surface. The two ends of the arc-shaped flow guiding surface of each flow guiding component are respectively connected to two adjacent inner sidewalls and are tangent to the two adjacent inner sidewalls. The air outlet of the air inlet pipe is arranged facing the arc-shaped guide surface of the adjacent guide component; Where N is a positive integer greater than 2.

3. The bonding device according to claim 2, characterized in that, The plane containing the air outlet of each air inlet pipe is set at a preset angle to the corresponding inner sidewall.

4. The bonding device according to claim 3, characterized in that, The preset angle is 15°-90°.

5. The bonding device according to claim 4, characterized in that, The preset angle is 45°.

6. The bonding device according to claim 3, characterized in that, The air intake pipe includes a first part located outside the first cover and perpendicular to the corresponding inner sidewall, and a second part connected to the first part and extending into the first chamber. The second portion extends in a curved manner relative to the first portion to form the air outlet at the end of the second portion away from the first portion, facing the adjacent arcuate guide surface.

7. The bonding device according to claim 6, characterized in that, The second part has an arc-shaped drainage surface on its side wall, and the arc-shaped drainage surface is connected to the first part of the air inlet pipe and the air outlet on opposite sides along its arc length direction.

8. The bonding device according to any one of claims 2-7, characterized in that, N is 4, and the four inner sidewalls form a square structure. The radius of the arc-shaped guide surface is equal to one-quarter of the side length of the square structure.

9. The bonding device according to claim 1, characterized in that, The bonding device further includes at least one sealing ring, which is disposed between the end of the first cover with the first opening and the end of the second cover with the second opening, so as to seal the end of the first cover with the first opening and the end of the second cover with the second opening.

10. The bonding device according to claim 9, characterized in that, The bonding device also includes two sealing rings, which are stacked between the end of the first cover where the first opening is provided and the end of the second cover where the second opening is provided. The outer periphery of the membrane material is sandwiched between the two sealing rings.

11. A bonding method, characterized in that, The bonding is performed using the bonding device according to any one of claims 1-10, the bonding method comprising: Gas is introduced into the plurality of air inlets so that the first air pressure in the first chamber is greater than the second air pressure in the second chamber, and the membrane material is able to fit and adhere to the curved substrate under the pressure difference between the first air pressure and the second air pressure.

12. The bonding method according to claim 11, characterized in that, The pressure difference between the first air pressure and the second air pressure is 0.5-2.0 MPa.

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