An adaptive adsorption platform

Abstract

The utility model provides a kind of self-adapting adsorption platform, comprising: product bearing module, including at least one independently controllable adsorption area;Negative pressure generating module, including with each the adsorption area corresponds, and mutually independent first cavity, second cavity and negative pressure source, three are connected in series by controllable pipe line in proper order, the first cavity is communicated with the adsorption area corresponding, the second cavity is preset with initial negative pressure value, release initial negative pressure when product adsorption, the negative pressure source provides sustained negative pressure.The innovative design of negative pressure generating module and independently controllable adsorption area by double-cavity setting has realized the significant improvement of adsorption efficiency and stability.

Description

Technical Field

[0001] This utility model relates to the field of display panel technology, and in particular to an adaptive adsorption platform. Background Technology

[0002] In the display panel manufacturing industry, high-precision production processes place stringent requirements on the positioning and fixation of the screen. Especially in critical processes such as automated optical inspection (AOI) and automated lamination, a suction platform is needed to stably hold the screen in place to prevent surface scratches or functional damage caused by product misalignment during stage movement. Furthermore, since display panels may experience edge or localized warping during production, the suction platform must also be able to flatten and adhere warped products to the stage, thereby ensuring the processing accuracy and production yield of subsequent processes.

[0003] Currently, the mainstream adsorption platform solutions in the industry mainly include two types: ceramic platforms and aluminum microporous platforms. Ceramic platforms achieve reliable adsorption due to their excellent flatness and chemical stability, but their high material costs and complex processing technology limit their widespread application in large-area adsorption scenarios. Aluminum microporous platforms, on the other hand, divide the stage into multiple fixed chambers, each with micropores on its surface, using negative pressure vacuum to adsorb and fix the product. However, as display panel products become more diversified and customized (e.g., from small-sized consumer electronics screens to medium-to-large-sized TV screens and ultra-large-sized commercial displays), the preset layout of the fixed chambers cannot cover all product sizes. When the actual product does not match the chamber layout, the microporous areas not covered by the product will form leakage channels, causing a decrease in the overall negative pressure of the vacuum adsorption system. This not only increases energy consumption but also leads to problems such as product displacement or poor adhesion of warped areas due to insufficient adsorption force, directly affecting production efficiency and product yield. Furthermore, existing solutions have weak adaptability to products with different degrees of warping, making it difficult to achieve precise flat adsorption by flexibly adjusting the adsorption force distribution.

[0004] Therefore, how to provide a vacuum adsorption platform that is cost-controllable, adaptable to different product sizes, and effectively solves the problem of product warpage adsorption has become a technical challenge that urgently needs to be addressed in this field. Utility Model Content

[0005] To address all or part of the problems of the prior art, this invention provides an adaptive adsorption platform. Through the innovative design of a negative pressure generating module with dual chambers and independently controllable adsorption areas, it achieves a significant improvement in adsorption efficiency and stability.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An adaptive adsorption platform, comprising:

[0008] The product carrier module includes at least one independently controllable adsorption area;

[0009] The negative pressure generating module includes a first chamber, a second chamber, and a negative pressure source, which are independent of each of the adsorption areas. The three are connected in series through a controllable pipeline. The first chamber is connected to the corresponding adsorption area. The second chamber is preset with an initial negative pressure value to release the initial negative pressure when the product is adsorbed. The negative pressure source provides continuous negative pressure.

[0010] The adsorption area is provided with multiple adsorption units. The adsorption units switch between open and closed states according to changes in air pressure, and control the flow of air between the first cavity and the outside through their state switching. The first cavity and the second cavity are connected through a second air path, and the second cavity is connected to the negative pressure source through a first air path. A first control valve is provided on the first air path, and a second control valve is provided on the second air path.

[0011] When the first control valve and the second control valve are opened, the adsorption unit covered by the product is in a conductive state under negative pressure and adsorbs the product; the adsorption unit not covered by the product switches to a closed state under negative pressure and blocks the connection with the outside.

[0012] The product carrier module includes a first substrate having a first surface and a second surface disposed opposite to each other. The adsorption unit includes a countersunk hole formed on the second surface, the top surface of which is the first surface of the first substrate. At least one guide hole is provided through the top surface of the countersunk hole to form the adsorption surface of the adsorption unit. The module also includes an adjustment component disposed inside the countersunk hole, which is opened or closed according to changes in air pressure.

[0013] Each adsorption unit includes 2-8 flow guide holes, which are distributed in a predetermined pattern on the top surface of the sinkhole.

[0014] The adjusting component includes a cylindrical outer shell with an annular sealing ring on its outer peripheral wall, which is adapted to be installed in the countersunk hole. The top and bottom of the outer shell are respectively provided with an upper opening and a lower opening. The upper opening corresponds to the guide hole and is provided with a dustproof net. The lower opening corresponds to the negative pressure chamber. The outer shell has a movable cavity inside, and an elastic sealing component is provided in the movable cavity.

[0015] The elastic sealing assembly includes an elastic element and a sealing member. One end of the elastic element is fixed to the lower opening, and the other end is connected to the sealing member. In the initial state, the sealing member is supported by the elastic element and located in the middle of the movable cavity, so that the upper opening and the lower opening are in communication. When a negative pressure is applied to the lower opening, the sealing member moves downward under the negative pressure and seals the lower opening.

[0016] The adjustment component includes a first adjustment component and a second adjustment component. The first adjustment component closes the lower opening at a first response speed in response to negative pressure, and the second adjustment component closes the lower opening at a second response speed in response to negative pressure. The first response speed is less than the second response speed.

[0017] In the adsorption unit of the adsorption region, a predetermined number of the first adjustment component and the second adjustment component are deployed, and the two types of adjustment components are distributed in the adsorption region according to a predetermined rule.

[0018] The preset rules include using a rectangular array of 2×2 to 8×8 adsorption units as the basic layout unit. Within each basic layout unit, the first adjustment component is deployed at the four corners, and the second adjustment component is deployed at the remaining positions.

[0019] The product carrier module further includes an isolation plate and a second substrate. The isolation plate is disposed below the second surface of the first substrate and includes multiple partitions. The second substrate is disposed below the isolation plate and has grooves on its upper surface corresponding to the partitions, which are assembled to form an independent negative pressure chamber.

[0020] This utility model has at least the following beneficial effects:

[0021] 1) The initial negative pressure value preset in the second chamber can be quickly released to the first chamber through the second air path after the product is placed, forming an instantaneous adsorption force. This solves the problem of adsorption response delay caused by pipeline volume in traditional single-chamber systems, shortens the adsorption response time, and is especially suitable for the rapid positioning of lightweight, easily deformable or uneven products.

[0022] 2) The negative pressure source continuously supplies stable negative pressure to the first and second chambers through the first air path. Combined with the gas pressure adaptive switching characteristics of the adsorption unit (the unit covered by the product remains conductive, and the uncovered unit automatically closes), a dual adsorption effect of "instantaneous capture + continuous fixation" is formed, which significantly reduces negative pressure leakage compared with traditional solutions and ensures the long-term stability of the adsorption state.

[0023] 3) The combination of independently controllable adsorption areas and a dual-chamber structure allows for dynamic adjustment of the effective adsorption range based on product size, avoiding energy waste from full-area adsorption, reducing adsorption energy consumption, and significantly improving the adaptability and energy utilization efficiency of multi-specification product co-production. Through structural innovation and optimized control logic, this design demonstrates significant advantages in rapid adsorption, stable fixation, and energy saving, effectively solving the technical challenges of slow response, high leakage rate, and high energy consumption inherent in traditional adsorption platforms. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the specific embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of an adaptive adsorption platform according to an embodiment of the present invention.

[0026] Figure 2 This is a schematic diagram of the first surface structure of the first substrate in an adaptive adsorption platform according to an embodiment of the present invention.

[0027] Figure 3 This is a partial structural diagram of the second surface (without adjustment components placed in the countersink) of the first substrate in an adaptive adsorption platform according to an embodiment of the present invention.

[0028] Figure 4 This is a partial structural diagram of the second surface (with an adjustment component placed inside the countersink) of the first substrate in an adaptive adsorption platform according to an embodiment of the present invention.

[0029] Figure 5 This is a schematic diagram of the structure of the adjustment component in an adaptive adsorption platform according to an embodiment of the present invention.

[0030] Figure 6 This is a side cross-sectional view of an adjustment component in an adaptive adsorption platform according to an embodiment of the present invention.

[0031] Figure 7 This is a schematic diagram of the structure of the second substrate in an adaptive adsorption platform according to an embodiment of the present invention.

[0032] Reference numerals: 1. First substrate; 2. Isolation plate; 3. Second substrate; 301. Negative pressure chamber; 4. Countersunk hole; 5. Guide hole; 6. Adjustment component; 601. Housing; 602. Sealing ring; 603. Dustproof net; 604. Elastic element; 605. Sealing element; 7. Product. Detailed Implementation

[0033] The technical solutions in specific embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0034] The implementation of this utility model will be described in detail below with reference to specific embodiments.

[0035] In this embodiment of the utility model, in conjunction with reference to the reference Figures 1 to 7 As shown, an adaptive adsorption platform is provided, which includes a product carrying module and a negative pressure generating module.

[0036] The product carrier module includes at least one independently controllable adsorption area, each adsorption area is equipped with multiple adsorption units, and each adsorption unit includes an adjustment component 6 that can switch between an open or closed state according to changes in air pressure. The negative pressure generating module includes a negative pressure chamber 301 corresponding to each adsorption area and a negative pressure source, and the negative pressure chamber 301 and the negative pressure source are connected by a first air passage equipped with a first control valve. When the product 7 is placed above the adsorption area, the first control valve is opened, connecting the negative pressure chamber 301 to the negative pressure source. At this time, the adjustment component 6 of the adsorption unit covered by the product 7 remains in an open state under the action of negative pressure, realizing the adsorption and fixation of the product 7; while the adjustment component 6 of the adsorption unit not covered by the product 7 switches to a closed state under the action of negative pressure, thereby blocking the connection between the outside and the negative pressure chamber 301, avoiding negative pressure leakage, and improving the adsorption efficiency and stability of the adsorption platform.

[0037] Specifically, the product carrier module includes a first substrate 1, which has a first surface (product carrier surface) and a second surface arranged opposite to each other. The adsorption unit includes a countersunk hole structure opened on the second surface, and the top surface of the countersunk hole is the first surface of the first substrate 1. Two to eight guide holes 5 are provided through the top surface of the countersunk hole, distributed in a predetermined pattern, to form the adsorption surface of the adsorption unit. An adjustment component 6 (such as a one-way vacuum check valve) capable of switching between open and closed states is configured inside the countersunk hole. The adjustment component 6 includes a cylindrical outer shell 601 and an elastic sealing component. An annular sealing ring 602 is provided on its outer peripheral wall and installed in the countersunk hole with an interference fit. The top of the outer shell 601 has an upper opening corresponding to the guide holes 5, and the bottom has a lower opening communicating with the lower negative pressure chamber 301. A dustproof net 603 is provided at the upper opening to block foreign objects. The housing 601 has an internal movable cavity, and an elastic sealing assembly is disposed within the movable cavity. Specifically, it includes an elastic element 604 and a sealing element 605. One end of the elastic element 604 is fixed to the edge of the lower opening, and the other end is connected to the sealing element 605. In the initial state, the sealing element 605 is supported by the elastic element 604 and located in the middle of the movable cavity, keeping the upper and lower openings connected. When the lower opening is subjected to negative pressure, the sealing element 605 moves downward against the elastic force under the action of the pressure difference until it seals the lower opening to block the air passage.

[0038] The regulating component 6 includes a first regulating component and a second regulating component. Under negative pressure, they respectively achieve the closing control of the guide hole 5 with different response characteristics: the first regulating component is equipped with a first elastic element (such as a spring), whose elastic coefficient is greater than that of the second elastic element (such as a spring) equipped in the second regulating component. This allows the first regulating component to gradually close the guide hole 5 with a relatively slow first response speed under the same negative pressure conditions, while the second regulating component closes the guide hole 5 quickly with a significantly faster second response speed. A preset number of first and second regulating components are deployed in multiple adsorption units within the adsorption region, and the two types of regulating components 6 are distributed within the adsorption region according to a preset rule. In this embodiment, the first and second regulating components are deployed in a mixed manner according to the following rule: a rectangular array composed of 2×2 to 8×8 adsorption units is used as the basic layout unit, with the first regulating component deployed at the four corners of each layout unit and the second regulating component deployed at the remaining positions. This synergistic design of gradient response and differentiated layout is particularly suitable for the adsorption scenarios of thin and light products (such as electronic paper). When product 7 is placed in the adsorption area, the second adjustment component in the middle area responds quickly and adsorbs and fixes product 7, while the first adjustment components at the four corners, due to their slower response speed, allow the warped parts of product 7 to be gradually flattened to be close to the adsorption surface. This effectively avoids the problem of the adjustment components 6 closing prematurely due to the warped corners being far from the adsorption surface, significantly improving the overall adsorption effect of product 7. In other embodiments, the type and layout rules of the adjustment components 6 can be adjusted according to product characteristics (such as size, weight, and surface flatness). For example, for large-sized products, the deployment ratio of the first adjustment components can be increased; for products with uneven surfaces, a mixed layout of random or gradient distribution can be adopted; and adjustment components 6 with multiple response characteristics can be configured, not limited to two, to form a multi-level response mechanism. The specific adjustment method of the above layout type is determined according to the actual application requirements, and this utility model does not limit it in this regard.

[0039] In this embodiment, the product carrier module adopts a layered structure design, specifically including: a first substrate 1, an isolation plate 2 disposed below the second surface of the first substrate 1, and a second substrate 3 disposed below the isolation plate 2. The isolation plate 2 has multiple partitions extending along its thickness direction, preferably annular boss structures, with each partition forming a downwardly protruding sealing edge on its lower surface. The second substrate 3 has grooves on its upper surface corresponding to the positions of each partition, the contours of which match the sealing edges of the partitions. When the isolation plate 2 and the second substrate 3 are assembled, the sealing edges of the partitions are embedded in the corresponding grooves, forming a sealing interface through sealant or a sealing ring 602, thereby dividing the space below the first substrate 1 into multiple independent negative pressure chambers 301. Each negative pressure chamber 301 is connected to a specific adsorption area through a guide hole 5 on the first substrate 1, achieving independent negative pressure control for each adsorption area. This structural design not only ensures the airtightness between the negative pressure chambers 301, but also allows for flexible adjustment of the number and distribution of the negative pressure chambers 301 according to actual needs through modular partition layout, thereby enhancing the adaptability and scalability of the adsorption platform.

[0040] To optimize the response speed and stability of the adsorption platform, the negative pressure chamber 301 adopts a dual-chamber structure design, specifically including an independently set first chamber and a second chamber. The first chamber is directly connected to the corresponding adsorption area through the guide hole 5 on the first substrate 1, forming the direct action space for the adsorption of product 7; the second chamber serves as a pre-negative pressure energy storage chamber, with an initial negative pressure value preset inside, providing an instantaneous peak negative pressure for the adsorption of product 7. The two chambers are selectively connected through a second air path equipped with a second control valve, and the second chamber is connected to the negative pressure source through a first air path equipped with a first control valve, with the negative pressure source continuously providing a stable negative pressure value. When product 7 needs to be adsorbed, the first control valve, the second control valve, and the negative pressure source are opened, and the initial negative pressure stored in the second chamber is quickly released to the first chamber through the second air path, forming a peak adsorption force in a very short time, ensuring that product 7 quickly adheres to the adsorption surface; at the same time, the negative pressure source continuously supplies air to the first and second chambers through the first air path to maintain a stable adsorption state. This dual-chamber design effectively solves the problem of adsorption response delay caused by pipeline volume in traditional single-chamber systems through the pre-pressure release mechanism of the energy storage chamber, and is especially suitable for the rapid fixation of products with uneven surfaces or lightweight and easily deformable materials.

[0041] This invention also provides a negative pressure adsorption method based on the above-mentioned adaptive adsorption platform, the specific steps of which are as follows:

[0042] S1. Place the product 7 in any adsorption area so that the product 7 covers part of the adsorption surface of the adsorption unit (i.e., the product contact surface formed by the guide hole 5 on the first surface of the first substrate 1).

[0043] S2. Open the first and second control valves corresponding to the adsorption area and start the corresponding negative pressure source. At this time, the second cavity, which has a pre-stored initial negative pressure value, quickly releases negative pressure to the first cavity through the second gas path. At the same time, the negative pressure source continuously supplies stable negative pressure to the first cavity and the second cavity through the first gas path.

[0044] S3. In the very short time before the adjustment component 6 closes, the adsorption unit covered by product 7 uses the initial negative pressure released by the second cavity to form an instantaneous adsorption force, which quickly fixes product 7 to the adsorption surface. Because product 7 seals the adsorption surface, it blocks the connection between the outside atmosphere and the guide hole 5. With the continuous negative pressure, the adjustment component 6 remains in a conductive state due to the seal of product 7, thus achieving stable adsorption of product 7. In the adsorption unit not covered by product 7, the adjustment component 6 moves rapidly downward under the action of negative pressure and seals the lower opening, blocking the gas exchange between the outside and the negative pressure chamber 301, effectively preventing negative pressure leakage.

[0045] S4. After product 7 is processed, the first control valve and the second control valve are closed and the negative pressure source is stopped. The pressure in the first chamber gradually returns to atmospheric pressure. The adjustment component 6 in the adsorption unit returns to its initial state under the reset force of the elastic element 604, and product 7 separates from the adsorption surface.

[0046] This method achieves rapid and stable adsorption of products of different shapes through the "instant release + continuous maintenance" mechanism of dual-chamber negative pressure, combined with the adaptive closing characteristics of the adsorption unit, which significantly improves adsorption efficiency and reliability. It is especially suitable for automated processing scenarios of high-precision positioning or easily deformable products.

[0047] It should be noted that, for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the scope of protection of the claims of this utility model.

Claims

1. An adaptive adsorption platform, characterized in that, include: The product carrier module includes at least one independently controllable adsorption area; The negative pressure generating module includes a first cavity, a second cavity, and a negative pressure source, which are corresponding to and independent of each of the adsorption areas. The first cavity and the second cavity are negative pressure cavities, and the three are connected in series in sequence through a controllable pipeline. The first cavity is connected to the corresponding adsorption area. The second cavity is preset with an initial negative pressure value, which is the initial negative pressure released when the product is adsorbed. The negative pressure source provides continuous negative pressure.

2. The platform according to claim 1, characterized in that, The adsorption area is provided with multiple adsorption units. The adsorption units switch between open and closed states according to changes in air pressure, and control the flow of air between the first cavity and the outside through their state switching. The first cavity and the second cavity are connected through a second air path, and the second cavity is connected to the negative pressure source through a first air path. A first control valve is provided on the first air path, and a second control valve is provided on the second air path.

3. The platform according to claim 2, characterized in that, When the first control valve and the second control valve are opened, the adsorption unit covered by the product is in a conductive state under negative pressure and adsorbs the product; the adsorption unit not covered by the product switches to a closed state under negative pressure and blocks the connection with the outside.

4. The platform according to claim 2, characterized in that, The product carrier module includes a first substrate having a first surface and a second surface disposed opposite to each other. The adsorption unit includes a countersunk hole formed on the second surface, the top surface of which is the first surface of the first substrate. At least one guide hole is provided through the top surface of the countersunk hole to form the adsorption surface of the adsorption unit. The module also includes an adjustment component disposed inside the countersunk hole, which is opened or closed according to changes in air pressure.

5. The platform according to claim 4, characterized in that, The adjusting component includes a cylindrical outer shell with an annular sealing ring on its outer peripheral wall, which is adapted to be installed in the countersunk hole. The top and bottom of the outer shell are respectively provided with an upper opening and a lower opening. The upper opening corresponds to the guide hole and is provided with a dustproof net. The lower opening corresponds to the negative pressure chamber. The outer shell has a movable cavity inside, and an elastic sealing component is provided in the movable cavity.

6. The platform according to claim 5, characterized in that, The elastic sealing assembly includes an elastic element and a sealing member. One end of the elastic element is fixed to the lower opening, and the other end is connected to the sealing member. In the initial state, the sealing member is supported by the elastic element and located in the middle of the movable cavity, so that the upper opening and the lower opening are in communication. When a negative pressure is applied to the lower opening, the sealing member moves downward under the negative pressure and seals the lower opening.

7. The platform according to claim 6, characterized in that, The adjustment component includes a first adjustment component and a second adjustment component. The first adjustment component closes the lower opening at a first response speed in response to negative pressure, and the second adjustment component closes the lower opening at a second response speed in response to negative pressure. The first response speed is less than the second response speed.

8. The platform according to claim 7, characterized in that, In the adsorption unit of the adsorption region, a predetermined number of the first adjustment component and the second adjustment component are deployed, and the two types of adjustment components are distributed in the adsorption region according to a predetermined rule.

9. The platform according to claim 8, characterized in that, The preset rules include using a rectangular array of 2×2 to 8×8 adsorption units as the basic layout unit. Within each basic layout unit, the first adjustment component is deployed at the four corners, and the second adjustment component is deployed at the remaining positions.

10. The platform according to claim 4, characterized in that, The product carrier module further includes an isolation plate and a second substrate. The isolation plate is disposed below the second surface of the first substrate and includes multiple partitions. The second substrate is disposed below the isolation plate and has grooves on its upper surface corresponding to the partitions, which are assembled to form an independent negative pressure chamber.

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