Glass panel adsorption device and use method thereof

Abstract

The invention relates to the field of glass panel processing, in particular to a glass panel adsorption device and a using method thereof. The glass panel adsorption device comprises a substrate, a plurality of suction nozzles, a plurality of suction nozzles and a plurality of suction nozzles, the quick-change module is arranged on one side of the base plate; the quick-change module is provided with at least one vacuum negative pressure port and at least one positive pressure control port; the execution pieces are arranged on the first surface of the substrate; the at least one pneumatic control valve is arranged on the second surface of the base plate; the pneumatic control valve communicates with the vacuum negative pressure port and the positive pressure control port and communicates with the execution piece through a vacuum channel. The vacuum adsorption device has the advantages that the vacuum adsorption maintaining time is prolonged, and the stability is improved.

Description

Technical Field

[0001] This invention relates to the field of glass panel processing, and in particular to a glass panel adsorption device and its usage method. Background Technology

[0002] In the production of high-precision glass panels, vacuum adsorption needs to be maintained after the vacuum source is disconnected during multiple stages such as panel transfer across equipment and vacuum processing process switching. However, the maintenance time and vacuum level are not ideal, mainly due to various factors such as defects in the adsorption system itself and interference from the process environment. The specific analysis is as follows:

[0003] The production stages that require maintaining vacuum adsorption after the vacuum source is disconnected are as follows:

[0004] I. Panel Transfer Between Equipment: When transferring glass panels between equipment performing different processes such as vacuum sputtering, polishing, and etching, the panels will detach from the vacuum source of the original equipment. For example, when glass panels for LCD displays are transferred upright, they are prone to shaking and falling off if held in place solely by the clamping mechanism. In this case, disconnecting the vacuum source and maintaining vacuum adsorption can work in conjunction with the clamping mechanism to firmly secure the panel and prevent scratches, deformation, and other problems during transfer.

[0005] II. Glass Scribing and Cutting Stage: When using a vacuum adsorption stage to scribing and cut glass panels, it is sometimes necessary to switch the vacuum lines to adjust the stage position or angle. During the switching process, the vacuum source will be briefly disconnected. Maintaining vacuum adsorption during this time can prevent the glass panel from shifting, ensure scribing accuracy and dimensional accuracy after cutting, and prevent defects such as edge chipping.

[0006] III. Vacuum Coating Process Connection Stage: During vacuum sputtering coating, the panel is first fixed to the substrate by vacuum adsorption. When switching targets after coating is completed, or when briefly shutting down the main vacuum pump for equipment maintenance, the vacuum source must be disconnected. Maintaining adsorption energy at this time prevents the panel from shifting within the chamber due to slight airflow or its own stress, thus avoiding problems such as film layer displacement and uneven thickness in subsequent coating processes.

[0007] IV. Ultra-thin Glass Precision Lamination Stage: In processes such as ODF vacuum lamination, the upper and lower glass panels are placed in a vacuum chamber and vacuum-bonded. If the vacuum source needs to be briefly disconnected during the lamination process to adjust the alignment accuracy of the panels, maintaining vacuum adsorption can prevent panel misalignment and avoid problems such as bubbles and abnormal polarization after lamination that affect the display effect.

[0008] The specific reasons for the unsatisfactory maintenance time and vacuum level are as follows:

[0009] 1. Component Seal Aging: Components such as flange connections, vacuum actuators, and pipe interfaces in vacuum adsorption devices are subject to high pressure differentials and frequent opening and closing, making them prone to aging and pressure imbalance, leading to atmospheric infiltration into the system. For example, the suction port sealing gasket of the adsorption workbench, in constant contact with the glass panel, will develop tiny gaps after wear, causing vacuum leakage, shortening the maintenance time, and reducing the vacuum level.

[0010] II. Design flaws in energy storage structure: Most adsorption systems rely on vacuum storage tanks or the cavity of the actuator itself to store vacuum. If the volume of the energy storage cavity is too small, the amount of vacuum stored is limited, and the adsorption force decays rapidly after the vacuum source is disconnected. Moreover, some devices use miniaturized actuators to adapt to the thin and light characteristics of ultra-thin glass, which further limits the energy storage space and results in a short maintenance time.

[0011] III. Interference from Outgassing in the Chamber and Workpiece: In a vacuum environment, water molecules, oil stains, and other impurities adsorbed on the inner wall of the vacuum chamber and the surface of the glass panel will gradually escape. This outgassing process will disrupt the vacuum balance of the system. In particular, if there are residual chemical reagents or fingerprints on the surface of the glass panel that have not been thoroughly cleaned, they will become the main source of outgassing. When the outgassing rate exceeds the system's vacuum holding capacity, the vacuum level will continue to decrease, and temperature changes will exacerbate the outgassing. For example, the heat during processing will accelerate the escape of molecules, further shortening the vacuum holding time. Summary of the Invention

[0012] Therefore, the technical problem to be solved by the present invention is to overcome the problems in the prior art, thereby providing a glass panel adsorption device and its usage method.

[0013] In a first aspect, a glass panel adsorption device is provided, comprising:

[0014] The substrate has a vacuum channel inside it;

[0015] A quick-change module is disposed on one side of the substrate; the quick-change module is provided with at least one vacuum negative pressure port and at least one positive pressure control port;

[0016] Multiple actuators are disposed on the first surface of the substrate;

[0017] At least one pneumatic control valve is disposed on the second surface of the substrate; the pneumatic control valve is connected to the vacuum negative pressure port and the positive pressure control port respectively, and is connected to the actuator through the vacuum channel.

[0018] In one embodiment of the present invention, there are two pneumatic control valves, which are symmetrically arranged about the central axis of the substrate along a first direction; the quick-change module is provided with two vacuum negative pressure ports and two positive pressure control ports; each pneumatic control valve is connected to one of the vacuum negative pressure ports and one of the positive pressure control ports.

[0019] In one embodiment of the present invention, the vacuum channel includes a first main channel arranged along a first direction and connected to one of the pneumatic control valves, at least one first branch channel arranged along a second direction and connected to the first main channel, a second main channel arranged along the first direction and connected to another of the pneumatic control valves, and at least one second branch channel arranged along the second direction and connected to the second main channel; wherein the first branch channel and the second branch channel are both connected to the actuator.

[0020] In one embodiment of the present invention, at least one air hole is provided on the first branch.

[0021] In one embodiment of the present invention, at least one air hole is provided on the second branch.

[0022] In one embodiment of the present invention, the pneumatic control valve is connected to the vacuum negative pressure port via a first pipeline.

[0023] In one embodiment of the present invention, the pneumatic control valve is connected to the positive pressure control port via a second pipeline.

[0024] In one embodiment of the present invention, the substrate includes a first substrate and a second substrate fixedly connected to the first substrate; the portion of the actuator that directly contacts the surface of the workpiece is exposed on the second substrate.

[0025] In one embodiment of the present invention, at least one vacuum gauge is also provided on the other side of the substrate.

[0026] Secondly, a method of use is provided, utilizing the glass panel adsorption device as described above, comprising the following steps:

[0027] S1, the quick-change module provides a vacuum source through the vacuum negative pressure port, while the positive pressure control port controls the air supply of the vacuum pipeline; and opens the vacuum channel inside the substrate through the gas control valve to position and adsorb the glass panel;

[0028] S2. Transfer the glass panel adsorption device to the production line and control the pneumatic valve to close the vacuum channel through the positive pressure control port. At this time, the glass panel adsorption device will move with the production line and operate in a state without vacuum source.

[0029] S3. When the glass panel adsorption device reaches the designated position, the positive pressure control port controls the pneumatic control valve to open the vacuum channel and provides a gas source to the pneumatic control valve to break the vacuum and position the glass panel.

[0030] Compared with the prior art, the above-described technical solution of the present invention has the following advantages:

[0031] The glass panel adsorption device of the present invention, through its structure including a substrate, a quick-change module, an actuator and a pneumatic control valve, can achieve precise control of vacuum adsorption and maintain the adsorption state when the vacuum source is disconnected, thus having the advantages of improving the vacuum adsorption maintenance time and stability. Attached Figure Description

[0032] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0033] Figure 1 This is a first-view structural schematic diagram of the glass panel adsorption device in this invention;

[0034] Figure 2 This is a second-view structural schematic diagram of the glass panel adsorption device in this invention;

[0035] Figure 3 This is a bottom view of the glass panel adsorption device in this invention;

[0036] Figure 4 This is a cross-sectional view of the glass panel in this invention.

[0037] Explanation of reference numerals on the accompanying drawings:

[0038] 101. First substrate; 1011. First main circuit; 1012. First branch circuit; 1013. Second main circuit; 1014. Second branch circuit; 102. Second substrate; 103. Reinforcing plate;

[0039] 20. Quick-change module;

[0040] 30. Execution document;

[0041] 40. Pneumatic control valve;

[0042] 501, First pipeline; 502, Second pipeline; 503, Third pipeline;

[0043] 60. Vacuum gauge. Detailed Implementation

[0044] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention.

[0045] In traditional glass panel production processes, the problem of insufficient maintenance time and decreased vacuum stability is common when maintaining vacuum adsorption after the vacuum source is disconnected. This problem mainly stems from atmospheric infiltration caused by the aging of the sealing of adsorption system components, rapid attenuation of adsorption force due to insufficient energy storage chamber volume, and interference with vacuum balance caused by outgassing phenomena on the workpiece and chamber surfaces.

[0046] For example, during the glass scribing and disconnection process, the vacuum adsorption stage needs to switch vacuum lines to adjust its position or angle, at which point the vacuum source is briefly disconnected. Specifically, the sealing gaskets of the stage's suction holes wear down due to prolonged contact with the glass panel, creating tiny gaps that lead to vacuum leakage. Simultaneously, the energy storage chamber of the small actuator, designed to accommodate ultra-thin glass, has an insufficient volume, causing the adsorption force to rapidly decrease after the vacuum source is disconnected. Furthermore, residual cleaning agent on the glass panel surface is accelerated to degas under the heat of the scribing process, further reducing the system's vacuum level. Consequently, the glass panel undergoes slight displacement during the switching process, causing the scribing trajectory to deviate, resulting in out-of-tolerance dimensional accuracy after disconnection, and edge chipping defects, affecting the product yield.

[0047] If the above issues are not resolved, the panel's positioning stability during the vacuum source disconnection phase cannot be guaranteed, leading to positional shifts in the process. These shifts can cause uneven film distribution in subsequent coating processes and alignment deviations in the bonding process, resulting in product scrap. Furthermore, frequent adsorption failures increase equipment downtime for maintenance, reducing the overall operating efficiency of the production line. In the long run, this problem will constrain the process reliability and product quality consistency of high-precision glass panel manufacturing.

[0048] In this regard, combined with Figures 1 to 3 This embodiment proposes a glass panel adsorption device, comprising:

[0049] The substrate has a vacuum channel inside it;

[0050] A quick-change module 20 is disposed on one side of the substrate; the quick-change module 20 is provided with at least one vacuum negative pressure port and at least one positive pressure control port;

[0051] Multiple actuators 30 are disposed on the first surface of the substrate;

[0052] At least one pneumatic control valve 40 is disposed on the second surface of the substrate; the pneumatic control valve 40 is connected to the vacuum negative pressure port and the positive pressure control port respectively, and is connected to the actuator 30 through the vacuum channel.

[0053] For ease of understanding, the following explains some key terms in this embodiment:

[0054] Glass panel adsorption device: This device is mainly used in industrial production environments to grasp, transport or fix glass panels by generating negative pressure adsorption force to ensure their stability and positioning accuracy during processing.

[0055] Substrate: This is the main structure of the adsorption device, usually made of a material with a certain degree of rigidity and sealing, such as metal. Its interior is designed to create pathways for gas flow.

[0056] Vacuum channels: These are closed paths pre-formed inside the substrate to guide gas flow. These channels connect the vacuum source or positive pressure gas source to the actuator 30 to achieve the adsorption or release of the glass panel.

[0057] Quick-change module 20: This quick-change module 20 is an interface assembly that can be quickly installed and removed. Its main function is to provide a connection point to external air sources such as vacuum pumps or compressed air sources. This module is designed to improve the maintenance efficiency and adaptability of the device.

[0058] Vacuum negative pressure port: This vacuum negative pressure port is an interface on the quick-change module 20 used to connect to an external vacuum source. Through this port, the vacuum source can evacuate the vacuum channel inside the adsorption device, thereby generating an adsorption force at the actuator 30.

[0059] Positive pressure control port: This positive pressure control port is another interface on the quick-change module 20, used to connect to an external positive pressure gas source. Through this port, positive pressure gas can be introduced into the adsorption device to quickly break the vacuum state at the actuator 30, thereby releasing the glass panel.

[0060] Actuator 30: This actuator 30 is a component that directly contacts the glass panel and generates an adsorption force, typically a vacuum suction cup or similar structure. When its interior is evacuated, it can firmly adsorb the glass panel; when positive pressure gas is introduced, it can quickly release the glass panel.

[0061] Pneumatic control valve 40: This pneumatic control valve 40 is a valve controlled by a pneumatic pressure signal. Its function is to precisely control the flow direction and on / off state of gas in the vacuum channel. According to control commands, the pneumatic control valve 40 can selectively connect the vacuum negative pressure port or the positive pressure control port to the actuator 30, thereby achieving precise management of the adsorption and release processes.

[0062] This embodiment provides a glass panel adsorption device, which is designed to optimize the adsorption and release operations of glass panels during the production process.

[0063] The core component of the device includes a substrate with vacuum channels designed to be formed within it. These vacuum channels can be formed in various ways; for example, they can be created by machining an interconnected network of pipes inside the substrate; alternatively, the substrate can be constructed by stacking multiple layers of sheet metal using methods such as bonding, welding, or bolting, where gaps or etched grooves between layers constitute the vacuum channels. The layout and dimensions of these channels are designed to effectively guide gas flow, ensuring efficient adsorption and release.

[0064] On one side of the substrate, a quick-change module 20 is provided. This quick-change module 20 can adopt various structural forms; for example, it can be a separate component connected to the substrate via a flange connection. The quick-change module 20 is provided with at least one vacuum negative pressure port and at least one positive pressure control port. These ports can be standard pneumatic quick couplings to facilitate quick connection and disconnection of external vacuum and positive pressure sources. For example, the vacuum negative pressure port can be a threaded interface for connecting a vacuum pump hose, while the positive pressure control port can be a plug-in connector for connecting a compressed air line.

[0065] On the first surface of the substrate, a plurality of actuators 30 are provided. These actuators 30 are components that directly contact the glass panel and generate an adsorption force. As one implementation, these actuators 30 can be multiple independent vacuum suction cups, fixed to the first surface of the substrate by means of threaded connections or the like, and connected to a vacuum channel inside the substrate. For example, each actuator 30 can be a suction cup made of rubber or silicone material, with an adsorption cavity at its bottom, which can generate an adsorption force on the glass panel when the cavity is evacuated.

[0066] At least one pneumatic control valve 40 is provided on the second surface of the substrate. This pneumatic control valve 40 can be an electromagnetically controlled two-position three-way valve, fixed to the second surface of the substrate by screws, and connected to the vacuum channel inside the substrate and the port on the quick-change module 20. The pneumatic control valve 40 is configured to communicate with both the vacuum negative pressure port and the positive pressure control port. For example, one input port of the pneumatic control valve 40 is connected to the vacuum negative pressure port, the other input port is connected to the positive pressure control port, and its output port is connected to the vacuum channel inside the substrate. Thus, the pneumatic control valve 40 can selectively introduce vacuum negative pressure or positive pressure gas into the vacuum channel according to a control signal, thereby controlling the adsorption or release state of the actuator 30.

[0067] In existing technologies, when the vacuum source is disconnected, the vacuum level of the adsorption system often drops rapidly due to component sealing aging or design defects in the energy storage structure, resulting in a short adsorption maintenance time. For example, traditional adsorption devices may rely solely on a simple vacuum tank or the cavity of the actuator 30 itself to store vacuum. Once the external vacuum source is interrupted, even minor leaks inside the system or gas release from the workpiece will rapidly reduce the adsorption force.

[0068] In contrast, this embodiment achieves precise control and isolation of the negative pressure state inside the vacuum channel by creating a vacuum channel inside the substrate and configuring at least one pneumatic control valve 40. In the above transfer example, when the external vacuum source is disconnected, the pneumatic control valve 40 can promptly close the connection with the vacuum negative pressure port, thereby forming a relatively independent closed negative pressure system between the vacuum channel inside the substrate and the actuator 30. This design effectively reduces the influence of the external environment on the internal vacuum level and reduces the vacuum decay rate caused by leakage from external pipelines or interfaces.

[0069] Furthermore, the introduction of the quick-change module 20 makes connecting and disconnecting the external air source more convenient and reliable, reducing the sealing problems that may exist in traditional threaded connections. The positive pressure control port, in conjunction with the pneumatic control valve 40, provides a means to quickly break the vacuum and release the glass panel, improving operational efficiency and safety, and avoiding panel sticking or damage caused by vacuum residue.

[0070] Overall, this embodiment constructs a system that can effectively isolate external vacuum sources and precisely control the adsorption and release processes through the synergistic effect of the vacuum channel inside the substrate, the quick-change module 20, multiple actuators 30, and the pneumatic control valve 40. After the vacuum source is disconnected, this system can maintain the adsorption of the glass panel more stably and for a longer period, thereby significantly improving the production efficiency and product quality of the glass panel during critical stages such as cross-equipment transfer and process switching, effectively overcoming the technical problems of unsatisfactory holding time and vacuum degree in existing technologies.

[0071] In other embodiments, this embodiment proposes a glass panel adsorption device that controls the adsorption and release of the glass panel through a vacuum channel inside the substrate and at least one pneumatic control valve 40. However, when the adsorption area is large or more precise adsorption / release control is required, a single pneumatic control valve 40 may cause uneven adsorption or release processes, affecting the stability and efficiency of adsorption, and may even damage the glass panel due to uneven local pressure.

[0072] In this embodiment, the above-mentioned glass panel adsorption device is further proposed, wherein there are two pneumatic control valves 40, which are symmetrically arranged about the central axis of the substrate along the first direction; the quick-change module 20 is provided with two vacuum negative pressure ports and two positive pressure control ports; each pneumatic control valve 40 is connected to one vacuum negative pressure port and one positive pressure control port.

[0073] The pneumatic control valve 40 is a device for controlling gas flow. In this embodiment, it is responsible for controlling the opening and closing of the vacuum channel and introducing positive pressure gas to break the vacuum. Setting two pneumatic control valves 40 allows for more precise zoned control of the adsorption area. Symmetrical arrangement means that the two pneumatic control valves 40 are arranged on both sides of the centerline along the first direction on the substrate, with equal distances and relative positions. This symmetrical arrangement helps to achieve a balanced distribution of force or airflow on both sides when the adsorption device adsorbs or releases the glass panel, thereby avoiding panel deformation or damage caused by uneven force and improving the synchronicity and stability of adsorption / release. For example, they can be located on the front and rear sides of the substrate, symmetrical to the transverse central axis of the substrate. The quick-change module 20 is an interface unit for connecting external gas sources and control signals. Setting two vacuum negative pressure ports and two positive pressure control ports is to accommodate the independent control needs of the two pneumatic control valves 40, providing independent vacuum source access points and positive pressure control gas source access points. This allows each pneumatic control valve 40 to independently receive vacuum negative pressure and positive pressure control signals, thereby achieving zoned control. For example, the quick-change module 20 can integrate two independent vacuum connectors and two independent control gas source connectors, each corresponding to a pneumatic control valve 40. Each pneumatic control valve 40 is connected to a vacuum negative pressure port and a positive pressure control port. This connection clearly defines that each pneumatic control valve 40 has an independent vacuum negative pressure supply and positive pressure control channel. This means that each pneumatic control valve 40 can be controlled independently to achieve the adsorption or release function of the vacuum channel it is connected to. This one-to-one connection method is the basis for realizing zoned control, ensuring the independent operation capability of each adsorption area. For example, each pneumatic control valve 40 can be connected to the corresponding vacuum negative pressure port and positive pressure control port on the quick-change module 20 through independent pipelines; or, in the vacuum channel design inside the substrate, an independent connection path is reserved for each pneumatic control valve 40, enabling it to be airtightly connected to the corresponding port of the quick-change module 20.

[0074] This embodiment increases the number of pneumatic control valves 40 to two and arranges them symmetrically about the central axis of the substrate along the first direction. The quick-change module 20 is also correspondingly configured with two vacuum negative pressure ports and two positive pressure control ports, with each pneumatic control valve 40 connected to one vacuum negative pressure port and one positive pressure control port. This configuration allows the adsorption device to divide the entire adsorption area into at least two independent control areas. When adsorbing a glass panel, the two vacuum negative pressure ports simultaneously or separately provide a vacuum source, opening the vacuum channel through their respective connected pneumatic control valves 40, causing multiple actuators 30 to generate a uniform adsorption force on the glass panel. Due to the symmetrical arrangement of the pneumatic control valves 40, the distribution of adsorption force is more even, reducing the risk of panel deformation caused by uneven local pressure. When releasing the glass panel, the two positive pressure control ports simultaneously or separately provide a positive pressure gas source to their respective pneumatic control valves 40. Upon receiving a positive pressure signal, the pneumatic control valve 40 closes the vacuum channel and introduces positive pressure gas, quickly breaking the vacuum state at the actuator 30, thereby achieving rapid and stable release of the glass panel. This dual-path independent control mechanism not only improves the response speed and reliability of adsorption and release, but also provides greater flexibility for handling glass panels of different sizes or shapes. For example, it allows for the selective activation of partial adsorption areas based on the panel size.

[0075] In some of the embodiments described above, a glass panel adsorption device is proposed. This device connects to a vacuum negative pressure port and a positive pressure control port via two pneumatic control valves 40, respectively, and is connected to the actuator 30 through a vacuum channel to achieve the adsorption and release of the glass panel. However, in practical applications, how to efficiently and flexibly distribute the vacuum or positive pressure signals from different pneumatic control valves 40 precisely to multiple actuators 30 to adapt to different adsorption requirements or achieve area control is a problem that needs further consideration.

[0076] In this regard, combined with Figure 4 This embodiment further proposes a vacuum channel structure, which includes a first main channel 1011 arranged along a first direction and connected to a pneumatic control valve 40, at least one first branch channel 1012 arranged along a second direction and connected to the first main channel 1011, a second main channel 1013 arranged along the first direction and connected to another pneumatic control valve 40, and at least one second branch channel 1014 arranged along the second direction and connected to the second main channel 1013; wherein, the first branch channel 1012 and the second branch channel 1014 are both connected to the actuator 30.

[0077] The vacuum channel refers to a path formed within the substrate for transmitting gases such as vacuum or positive pressure gases. Its function is to connect the pneumatic control valve 40 and the actuator 30, ensuring that the vacuum or positive pressure is effectively transmitted to the actuator 30, thereby achieving the adsorption or release of the glass panel. The vacuum channel can be implemented by forming a pipe within the substrate or by stacking multiple substrates to form an internal flow channel. The first main path 1011 is part of the vacuum channel, extending along a first direction and communicating with one of the pneumatic control valves 40. This main path is primarily responsible for guiding the vacuum or positive pressure gas from the pneumatic control valve 40 to its controlled area. It can be designed with a sufficiently large cross-sectional area to ensure smooth airflow and can employ a straight or curved channel structure. The first branch path 1012 is another part of the vacuum channel, arranged along a second direction and communicating with the first main path 1011. The main function of the first branch path 1012 is to further distribute the gas transmitted by the first main path 1011 to multiple actuators 30. These branches can be arranged in an array to uniformly cover the adsorption area, or customized according to the layout of the actuators 30. The second main path 1013 is another part of the vacuum channel, also extending along the first direction and connected to another pneumatic control valve 40. Similar to the first main path 1011, the second main path 1013 is responsible for guiding the vacuum or positive pressure gas from its corresponding pneumatic control valve 40 to the area it controls. Its structure and design principles can be similar to the first main path 1011 to ensure efficient gas flow. The second branch 1014 is yet another part of the vacuum channel, arranged along the second direction and connected to the second main path 1013. The function of the second branch 1014 is to distribute the gas transmitted by the second main path 1013 to the actuators 30 it controls. These branches can be arranged alternately or in parallel with the first branch 1012, collectively covering the entire adsorption area, ensuring that all actuators 30 receive the required gas supply.

[0078] This embodiment achieves effective distribution of vacuum or positive pressure gas by designing the vacuum channel as including a first main channel 1011, a first branch channel 1012, a second main channel 1013, and a second branch channel 1014. Specifically, one pneumatic control valve 40 transmits the gas it controls to the first branch channel 1012 through the first main channel 1011, and then connects to a portion of the actuators 30. Simultaneously, another pneumatic control valve 40 transmits the gas it controls to the second branch channel 1014 through the second main channel 1013, and then connects to another portion of the actuators 30. This branching design allows the two pneumatic control valves 40 to independently control actuators 30 in different areas, or to collaboratively control all actuators 30. When it is necessary to adsorb the glass panel, the corresponding pneumatic control valve 40 opens, and the vacuum source transmits vacuum to the actuators 30 through its corresponding main channel and branch channel, causing the actuators 30 to adsorb the glass panel. When the glass panel needs to be released, the pneumatic control valve 40 closes the vacuum channel and introduces positive pressure gas. This positive pressure is then transmitted to the actuators 30 through the main and branch lines, thereby breaking the vacuum and releasing the glass panel. This structure avoids the problems of uneven distribution or inflexible control that may occur with a single channel, ensuring that the gas can be efficiently and accurately delivered to each actuator 30, thus improving the adaptability and reliability of the adsorption device.

[0079] In some of the embodiments described above, a device for adsorbing glass panels through a vacuum channel is proposed. This vacuum channel includes a main path and branch paths, with the branch paths connecting to the actuator 30. However, in actual operation, if the branch path directly connects to the actuator 30, and some actuators 30 fail to effectively adsorb or the adsorption area is incomplete, the vacuum level within that branch path may decrease, thereby affecting the stability and adsorption effect of the entire adsorption system. This problem is particularly prominent when precise control of local adsorption force is required or when processing glass panels of different sizes.

[0080] In this embodiment, the above-mentioned glass panel adsorption device is further proposed, wherein at least one air hole is provided on the first branch 1012.

[0081] A vent refers to a hole made in the wall of the first branch 1012 for gas flow. These holes can be circular, square, or other geometric shapes, and their size and number can be designed according to actual adsorption requirements. The main function of the vent is to serve as a gas interface between the first branch 1012 and the actuator 30, ensuring that vacuum or positive pressure can be effectively transmitted to the actuator 30 and to regulate the local vacuum level.

[0082] This embodiment employs a scheme where at least one vent is provided on the first branch 1012, allowing vacuum or positive pressure to be transmitted to the actuator 30 through these specific, controlled vents. When the pneumatic control valve 40 connected to the first main branch 1011 is activated to generate a vacuum, the vacuum is transmitted through the first main branch 1011, the first branch 1012, and ultimately through these vents to the actuator 30. This design ensures that vacuum is effectively applied to the actuator 30 connected to the first branch 1012. Conversely, when the glass panel needs to be released, positive pressure is also guided to the actuator 30 through these vents. This structure more effectively transmits vacuum or positive pressure to the actuator 30, avoiding localized vacuum leakage problems that may result from direct, large-area connections between the branch and the actuator 30, thereby improving the stability and reliability of the adsorption process.

[0083] This embodiment further proposes the above-mentioned glass panel adsorption device, wherein at least one air hole is provided on the second branch 1014.

[0084] A vent refers to a hole in the wall of the second branch 1014 for gas flow. These holes can be circular, elliptical, rectangular, or other irregular shapes, and their size and number can be designed according to actual needs. The main function of the vent is to serve as an outlet or inlet for gas (vacuum or positive pressure) to flow outward from the second branch 1014 (usually to the actuator 30 or directly to the adsorption surface). By providing vents, effective gas exchange between the second branch 1014 and the external environment or actuator 30 can be achieved. As one implementation method, the vents can be directly machined on the wall of the second branch 1014, such as by drilling or laser drilling. These vents can be evenly distributed along the length of the second branch 1014 to ensure uniform gas distribution.

[0085] This embodiment incorporates at least one vent in the second branch 1014, allowing gas (vacuum or positive pressure) to enter the second branch 1014 through the second main branch 1013 when the second pneumatic control valve 40 is activated. This gas then exchanges more directly and effectively with the actuator 30 via these vents. During adsorption, the vents facilitate the rapid expulsion of air from the actuator 30, accelerating vacuum establishment and enhancing adsorption force. During release, the vents allow positive pressure gas to rapidly enter the actuator 30, disrupting the vacuum and ensuring rapid and complete release of the glass panel. This design, combining the configuration of the first main branch 1011 and the first branch 1012, enables more flexible control of the adsorption and release processes in different areas. The presence of the vents provides an optimized exchange point between the gas in the second branch 1014 and the connected actuator 30, solving problems of uneven gas distribution or slow response. This is particularly suitable for scenarios requiring precise control of multiple actuators 30 or handling complex-shaped glass panels.

[0086] In some of the embodiments described above, a glass panel adsorption device is proposed, wherein the pneumatic control valve 40 is connected to a vacuum negative pressure port and a positive pressure control port to control the vacuum channel. However, in practical applications, ensuring the reliability, airtightness, and ease of connection between the pneumatic control valve 40 and these ports is a key issue affecting the overall performance and maintenance efficiency of the device.

[0087] In this embodiment, the pneumatic control valve 40 is connected to the vacuum negative pressure port through the first pipeline 501; the pneumatic control valve 40 is connected to the positive pressure control port through the second pipeline 502.

[0088] The first conduit 501 is a channel for connecting the pneumatic control valve 40 to the vacuum negative pressure port. This conduit is responsible for accurately delivering negative pressure gas from an external vacuum source to the pneumatic control valve 40 to drive it to perform the corresponding action. The first conduit 501 can be implemented in various forms; for example, it can be a flexible gas tube, such as a polyurethane (PU) tube or a polyethylene (PE) tube, connected to the pneumatic control valve 40 and the vacuum negative pressure port via a quick connector or threaded connector.

[0089] The second conduit 502 is a channel for connecting the pneumatic control valve 40 to the positive pressure control port. This conduit is responsible for accurately delivering positive pressure control gas or signals from the outside to the pneumatic control valve 40 to control the opening or closing state of its internal valves. The implementation of the second conduit 502 is similar to that of the first conduit 501, and a flexible air tube can be used. Its main function is to ensure the rapid and accurate transmission of control signals, thereby achieving precise control of the pneumatic control valve 40.

[0090] The pneumatic control valve 40 is connected to the vacuum negative pressure port via the first pipe 501, allowing an external vacuum source to be accurately delivered to the pneumatic control valve 40 through the vacuum negative pressure port and the first pipe 501. Simultaneously, the pneumatic control valve 40 is connected to the positive pressure control port via the second pipe 502, enabling an external positive pressure control signal or gas source to act precisely on the pneumatic control valve 40 through the positive pressure control port and the second pipe 502, controlling the opening or closing of the vacuum channel. This explicit pipe connection method ensures the stability and airtightness of the airflow path, avoiding gas leakage or inaccurate control due to improper connection. The introduction of the first pipe 501 and the second pipe 502 standardizes and ensures reliable connections between the pneumatic control valve 40 and the external gas source and control port, thereby improving the overall operating efficiency and control accuracy of the glass panel adsorption device.

[0091] This embodiment further proposes that the substrate includes a first substrate 101 and a second substrate 102 fixedly connected to the first substrate 101; the portion of the actuator 30 that is in direct contact with the workpiece surface exposes the second substrate 102.

[0092] Specifically, the first substrate 101 is the main structural part of the substrate, its main function being to provide overall mechanical support and rigidity, and it typically integrates the main vacuum channels internally. The first substrate 101 can be made of a material with high strength and stability to ensure the structural reliability of the device during operation. The second substrate 102 is an auxiliary structure fixedly connected to the first substrate 101, and it can serve as a mounting interface or protective layer for the actuator 30. The fixed connection between the first substrate 101 and the second substrate 102 can be achieved in various ways, such as bolting, riveting, welding, or bonding, to ensure that a stable overall structure is formed between the two. The part of the actuator 30 that directly contacts the workpiece surface typically refers to the functional component of the actuator 30 that directly contacts the glass panel and forms an adsorption effect, such as the lip of a suction cup. This part is exposed on the second substrate 102, meaning that the effective contact portion of the actuator 30 extends beyond the surface of the second substrate 102, thereby preventing the second substrate 102 from causing any physical obstruction or interference to the contact between the actuator 30 and the workpiece.

[0093] This embodiment achieves modularization and layering of substrate functions by designing the substrate as a combined structure including a first substrate 101 and a second substrate 102. The first substrate 101, as the main supporting structure of the device, is responsible for supporting the internal vacuum channel and connecting other core components, ensuring the overall rigidity and stability of the device. The second substrate 102, as an auxiliary component fixedly connected to the first substrate 101, can be specifically designed as a mounting platform for the actuator 30 or a protective layer for vulnerable parts. By ensuring that the portion of the actuator 30 in direct contact with the workpiece surface is exposed on the second substrate 102, this design effectively solves the problem of limited contact for the actuator 30 that may exist in traditional integrated substrates, ensuring that the actuator 30 can fully and unobstructedly contact the glass panel, thereby forming a reliable adsorption or gripping action. This structure makes the installation, replacement, and maintenance of the actuator 30 more convenient. At the same time, the second substrate 102, as a replaceable component, can also effectively protect the first substrate 101 from direct wear or damage, extending the service life of the entire device.

[0094] This embodiment further proposes that a reinforcing plate 103 is fixedly provided on the second surface of the first substrate 101, and the pneumatic valve 40 and the vacuum channel are connected through a third pipe 503. The third pipe 503 can pass through the reinforcing plate 103 without exceeding the outline of the first substrate 101. When the robot grabs the glass panel adsorption device, the exposed pipe is prone to scratching other devices on the production line. After being hidden in the first substrate 101, the outline of the first substrate 101 is the safety frame of the third pipe 503, and the third pipe 503 will not be damaged or scratched.

[0095] In some of the embodiments described above, a glass panel adsorption device is proposed, which achieves the positioning and adsorption of the glass panel through a vacuum channel inside the substrate, a vacuum source provided by the quick-change module 20, and the control of the pneumatic control valve 40. However, in actual operation, relying solely on the opening and closing of the vacuum source makes it difficult to grasp the actual vacuum level inside the adsorption chamber in real time and intuitively. This may prevent operators from timely judging whether the adsorption is effective or whether there is a leak, thereby affecting the reliability and efficiency of the adsorption.

[0096] In this embodiment, the glass panel adsorption device further includes at least one vacuum gauge 60 located on the other side of the substrate. The vacuum gauge 60 is an instrument used to measure vacuum levels (i.e., pressures below atmospheric pressure). Its main function is to display the vacuum status inside the adsorption device in real time, providing operators with intuitive pressure data. The vacuum gauge 60 can be implemented in various ways. For example, a mechanical vacuum gauge can be used, where a Bourdon tube or diaphragm deformation drives a pointer to indicate pressure; an electronic vacuum gauge can also be used, where pressure signals are converted into electrical signals by sensors such as resistors, capacitors, or thermocouples, and then displayed digitally on a screen. Furthermore, a composite vacuum gauge can be used, combining multiple measurement principles to cover a wider range of vacuum levels.

[0097] This embodiment employs a vacuum gauge 60 on the other side of the substrate, which is directly or indirectly connected to the vacuum channel inside the substrate, thereby monitoring the vacuum negative pressure state inside the adsorption device in real time. When the quick-change module 20 provides a vacuum source and adsorbs the glass panel, the vacuum gauge 60 displays the current vacuum level. Operators can use the reading on the vacuum gauge 60 to determine whether adsorption is successful, whether there is a leak, or whether the vacuum level meets the preset adsorption requirements. This real-time monitoring mechanism allows operators to promptly identify and resolve potential problems, ensuring the stability and reliability of the adsorption process.

[0098] This embodiment also proposes a method of use, utilizing the above-mentioned glass panel adsorption device, including the following steps:

[0099] S1, the quick-change module 20 provides a vacuum source through the vacuum negative pressure port, while the positive pressure control port controls the air supply of the vacuum pipeline; and opens the vacuum channel inside the substrate through the gas control valve 40 to position and adsorb the glass panel;

[0100] S2. Transfer the glass panel adsorption device to the production line and control the pneumatic valve 40 to close the vacuum channel through the positive pressure control port. At this time, the glass panel adsorption device will move with the production line and operate in a state without vacuum source.

[0101] S3. When the glass panel adsorption device reaches the designated position, the positive pressure control port controls the pneumatic control valve 40 to open the vacuum channel and provides a gas source to the pneumatic control valve 40 to break the vacuum and position the glass panel.

[0102] Specifically, in step S1, the quick-change module 20 provides a vacuum source through the vacuum negative pressure port, while the positive pressure control port controls the airflow through the vacuum pipeline; and the gas control valve 40 opens the vacuum channel inside the substrate to position and adsorb the glass panel. In essence, this step aims to initiate the adsorption process of the glass panel. The quick-change module 20, acting as an interface to an external vacuum system, connects its vacuum negative pressure port to an external vacuum pump or vacuum generator for air extraction. Simultaneously, the positive pressure control port receives compressed gas from the outside, which opens the gas control valve 40. This connects the vacuum negative pressure port to the vacuum channel inside the substrate. Air is extracted from the vacuum channel, creating a negative pressure at the actuator 30, causing the glass panel to be firmly adsorbed.

[0103] In step S2, the glass panel adsorption device is transferred to the production line, and the vacuum channel is closed by controlling the pneumatic control valve 40 through the positive pressure control port. At this time, the glass panel adsorption device will move with the production line while maintaining operation without a vacuum source. This step mainly solves the stability and energy consumption problems of the glass panel during the transfer process. After the glass panel is adsorbed, the device, along with the glass panel, is moved to the next stage of the production line. At this time, the pneumatic control valve 40 is used through the positive pressure control port to isolate the vacuum channel inside the substrate from the external vacuum negative pressure port. Because the vacuum channel is sealed, the internal negative pressure is maintained, and the vacuum level can be maintained at no less than -65 kPa for half an hour, so the glass panel can still be firmly adsorbed without continuous connection to an external vacuum source. This allows the device to move freely with the production line without consuming additional vacuum energy.

[0104] In step S3, when the glass panel adsorption device reaches the designated position, the positive pressure control port controls the pneumatic control valve 40 to open the vacuum channel and provides a vacuum-breaking gas source to the pneumatic control valve 40 to position the glass panel. This step aims to achieve precise release and placement of the glass panel. When the device reaches the predetermined placement point, the positive pressure control port causes the pneumatic control valve 40 to reopen the vacuum channel. Simultaneously, a vacuum-breaking gas source, such as compressed air or ambient air, is introduced into the pneumatic control valve 40 and quickly enters the area where the actuator 30 is located through the vacuum channel. This airflow quickly counteracts the internal negative pressure, allowing the glass panel to detach from the actuator 30 quickly and smoothly, thereby achieving precise positioning with a shape positioning accuracy of ±0.03.

[0105] This embodiment optimizes the usage of the aforementioned glass panel adsorption device, achieving efficient and stable processing of glass panels on an automated production line. In the initial adsorption stage, the quick-change module 20 provides a vacuum through the vacuum negative pressure port, and the positive pressure control port drives the pneumatic control valve 40 to open, connecting the vacuum channel with the actuator 30, thereby achieving rapid positioning and adsorption of the glass panel. During glass panel transfer, the method utilizes the positive pressure control port to control the pneumatic control valve 40 to close the vacuum channel, sealing the internal negative pressure within the substrate. This design allows the device to firmly adsorb the glass panel using the internally sealed negative pressure even when disconnected from an external vacuum source, enabling passive transfer on the production line, significantly reducing energy consumption and simplifying external piping layout. When the device reaches the designated placement position, the positive pressure control port again drives the pneumatic control valve 40 to open the vacuum channel and introduces a gas source to disrupt the vacuum, quickly eliminating the negative pressure and achieving precise release and placement of the glass panel. This phased and refined vacuum management strategy effectively solves the problems of continuity, stability and energy consumption in the adsorption, transfer and placement of glass panels during automated production, ensuring the safe and precise handling of glass panels throughout the entire process.

[0106] Through the above technical solution, this embodiment provides a highly efficient and reliable method for processing glass panels. This method achieves on-demand supply of the vacuum source and effective sealing of the internal negative pressure by precisely controlling the opening and closing of the pneumatic control valve 40 at different operation stages. This not only avoids the continuous consumption of the external vacuum source during transfer, significantly reducing production energy consumption, but also effectively prevents the risk of accidental detachment of the glass panel due to external interference or vacuum source interruption during movement by maintaining the internal sealing negative pressure during the transfer stage, thereby improving the stability and safety of the production line. Furthermore, the introduction of a vacuum-breaking gas source during the placement stage ensures the rapid and precise release of the glass panel, avoiding placement deviations or panel damage caused by residual negative pressure. Therefore, this method ensures that every step of the glass panel process, from adsorption and transfer to placement, is completed safely, efficiently, and accurately in the automated production process.

[0107] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A glass panel adsorption device, characterized in that, include: The substrate has a vacuum channel inside it; A quick-change module (20) is disposed on one side of the substrate; the quick-change module (20) is provided with at least one vacuum negative pressure port and at least one positive pressure control port; Multiple actuators (30) are disposed on the first surface of the substrate; At least one pneumatic control valve (40) is disposed on the second surface of the substrate; the pneumatic control valve (40) is connected to the vacuum negative pressure port and the positive pressure control port respectively, and is connected to the actuator (30) through the vacuum channel.

2. The glass panel adsorption device according to claim 1, characterized in that, There are two pneumatic control valves (40), which are symmetrically arranged about the central axis of the substrate along the first direction; the quick-change module (20) is provided with two vacuum negative pressure ports and two positive pressure control ports; each pneumatic control valve (40) is connected to one vacuum negative pressure port and one positive pressure control port.

3. The glass panel adsorption device according to claim 2, characterized in that, The vacuum channel includes a first main channel (1011) arranged along a first direction and connected to one of the pneumatic control valves (40), at least one first branch channel (1012) arranged along a second direction and connected to the first main channel (1011), a second main channel (1013) arranged along the first direction and connected to another of the pneumatic control valves (40), and at least one second branch channel (1014) arranged along the second direction and connected to the second main channel (1013); wherein the first branch channel (1012) and the second branch channel (1014) are both connected to the actuator (30).

4. The glass panel adsorption device according to claim 3, characterized in that, The first branch (1012) is provided with at least one air hole.

5. The glass panel adsorption device according to claim 3, characterized in that, The second branch (1014) is provided with at least one air hole.

6. The glass panel adsorption device according to claim 2, characterized in that, The pneumatic control valve (40) is connected to the vacuum negative pressure port via the first pipeline (501).

7. The glass panel adsorption device according to claim 2, characterized in that, The pneumatic control valve (40) is connected to the positive pressure control port via the second pipeline (502).

8. The glass panel adsorption device according to claim 1, characterized in that, The substrate includes a first substrate (101) and a second substrate (102) fixedly connected to the first substrate (101); the portion of the actuator (30) that is in direct contact with the workpiece surface is exposed on the second substrate (102).

9. The glass panel adsorption device according to claim 1, characterized in that, It also includes at least one vacuum gauge (60) located on the other side of the substrate.

10. A method of use, characterized in that, The glass panel adsorption device according to any one of claims 1-9 includes the following steps: S1, the quick-change module (20) provides a vacuum source through the vacuum negative pressure port, while the positive pressure control port controls the air supply of the vacuum pipeline; and opens the vacuum channel inside the substrate through the gas control valve (40) to position and adsorb the glass panel; S2. Transfer the glass panel adsorption device to the production line and control the pneumatic valve (40) through the positive pressure control port to close the vacuum channel. At this time, the glass panel adsorption device will move with the production line and maintain operation without a vacuum source. S3. When the glass panel adsorption device reaches the designated position, the positive pressure control port controls the pneumatic control valve (40) to open the vacuum channel and provides a gas source to the pneumatic control valve (40) to break the vacuum and position the glass panel.

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