An automatic loading and unloading system and method for a fully enclosed photovoltaic glass panel

Abstract

The application discloses a kind of automatic feeding and discharging systems of fully closed photovoltaic glass plate, including air-tight feeding system and air-tight discharging system, respectively with the inlet and outlet of drying line is connected, inside is equipped with feeding and discharging buffer equipment and stacking equipment;Stacking inner circulating track, connect air-tight feeding system and air-tight discharging system, for the circulating transport of empty heavy self-locking photovoltaic glass plate rack;Air-tight feeding and discharging conveying line cabinet is used to transport photovoltaic glass plate in air-tight environment;Air-tight compartment for feeding and discharging, closed and contains air-tight feeding system, air-tight discharging system, air-tight feeding and discharging conveying line cabinet;Heavy self-locking photovoltaic glass plate rack is used to carry photovoltaic glass plate and lock liquid in drying process, air-tight discharging system is equipped with pitch adjustment conveying line, to correct the alignment of the outlet of drying line and equipment discharge port.The present application has the characteristics of full closure, automation, buffer function and the characteristics of large size, heavy load, fragile goods handling, can effectively improve production efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic glass panel production equipment, and particularly to an automatic loading and unloading system and method for fully enclosed photovoltaic glass panels. Background Technology

[0002] In the manufacturing process of photovoltaic glass panels, the loading and unloading process is a critical link affecting production efficiency and product quality. Traditional photovoltaic glass panel loading and unloading systems mainly suffer from the following technical defects:

[0003] Insufficient airtightness: Existing drying lines mostly adopt open or semi-closed structures. During the high-temperature drying process, chemical solvents such as N-methylformamide used for photovoltaic glass panel processing are highly susceptible to vaporization, forming toxic gases. These harmful substances can leak out through the loading and unloading areas, posing a serious threat to the health of operators and polluting the production environment.

[0004] Low level of automation: Conventional handling methods mainly rely on manual operation or simple mechanical devices. Large-sized and heavy photovoltaic glass panels are handled by edge clamping or vacuum adsorption, which can easily cause damage to the glass edges or scratches on the surface.

[0005] Cycle control is difficult: Traditional systems lack effective buffering mechanisms, which can easily lead to production cycle disorder when the upstream feeding speed and the downstream receiving speed do not match. This is especially true in the drying process, where strict temperature profiles require continuous production. Material accumulation or interruption can affect drying quality and cause energy waste.

[0006] Poor equipment compatibility: With the upgrading and transformation of the production line, the outlet of the drying line and the discharge port of subsequent equipment often deviate in position. The existing fixed conveyor system cannot flexibly adjust the docking position, requiring manual intervention to adjust, which affects production efficiency.

[0007] Significant safety hazards: The open design exposes operators to a working environment containing toxic gases, and there is a lack of effective emergency protection measures, posing a major safety hazard. Summary of the Invention

[0008] To address the aforementioned problems in the prior art, this invention provides an automatic loading and unloading system and method for fully enclosed photovoltaic glass panels, thereby resolving the aforementioned technical issues.

[0009] To achieve the above objectives, according to a first aspect of the present invention, an automated loading and unloading system for fully enclosed photovoltaic glass panels is provided, comprising:

[0010] The airtight feeding system and the airtight unloading system are connected to the inlet and outlet of the drying line, respectively, and both are equipped with loading and unloading buffer devices and palletizing devices.

[0011] The internal circulation track of the palletizing system connects the airtight feeding system and the airtight unloading system, so that the unloaded heavy-duty self-locking photovoltaic glass panel rack can return from the airtight unloading system to the airtight feeding system, thereby completing the recycling of the heavy-duty self-locking photovoltaic glass panel rack.

[0012] Airtight loading and unloading conveyor cabinets are used to transfer photovoltaic glass panels from the outside to the airtight loading system and from the airtight unloading system to the outside in an airtight environment.

[0013] Airtight compartments for loading and unloading, enclosed to contain airtight loading systems, airtight unloading systems, and airtight loading and unloading conveyor cabinets;

[0014] The heavy-duty self-locking photovoltaic glass panel rack is used to support photovoltaic glass panels and lock the liquid during the drying process. The airtight unloading system is equipped with a spacing adjustment conveyor line and a right-angle conveyor line cabinet for calibration to ensure the alignment of the drying line outlet with the equipment discharge port. Through the synergistic effect of the airtight loading / unloading system, circulating track, and sealed compartments, the system achieves fully enclosed automated transport of photovoltaic glass panels, effectively isolating toxic gases.

[0015] In some specific embodiments, the palletizing equipment includes a primary input conveyor line, a secondary lifting conveyor line, a tertiary material rack conveyor line, a ceiling-mounted two-axis loading / unloading robot, a top material rack unlocking clamp, and a hybrid enclosed frame. The primary input conveyor line is at its lowest horizontal position and is flush with the conveyor line inside the loading / unloading buffer equipment. The secondary lifting conveyor line connects to the primary input conveyor line and the tertiary material rack conveyor line respectively through lifting motion. The tertiary material rack conveyor line is at its highest horizontal position and is flush with the internal track of the drying line. The ceiling-mounted two-axis loading / unloading robot is installed on top of the hybrid enclosed frame. The top material rack unlocking clamp controls the opening and closing of the tandem lifting locking cover of the material rack. This configuration ensures accurate palletizing of photovoltaic glass panels in a confined environment, avoiding damage during handling.

[0016] In some specific embodiments, the overhead track-type two-axis loading and unloading robot lifts the photovoltaic glass panels from the bottom for transport. This design avoids edge damage caused by traditional clamping, improving the safety of handling fragile items.

[0017] In some specific embodiments, the spacing adjustment conveyor line includes a groove-turning conveyor line, which receives photovoltaic glass panels unloaded by a ceiling-mounted two-axis loading and unloading robot and changes their transport direction to enter a right-angle correction conveyor cabinet. The groove-turning and right-angle correction mechanisms solve the equipment interface alignment problem and enhance system compatibility.

[0018] In some specific embodiments, the heavy-duty self-locking photovoltaic glass panel rack includes: a rack body, clearance crossbars, and series-connected lifting and locking covers. The clearance crossbars are welded to the bottom surface of each layer, creating a height difference. The series-connected lifting and locking covers are linked to all covers via metal rods. Under normal conditions, they hold the photovoltaic glass panels in place, and when unlocked, they expose the placement position. The series-connected design of the covers ensures that the liquid does not detach during drying, and the clearance crossbars optimize the robot's working space.

[0019] In some specific embodiments, the airtight loading and unloading conveyor cabinet includes a double-entry airtight cabinet, an internal conveyor line, single-acting doors, an extraction pipe, and an adjusting bracket. The adjusting bracket supports the bottom of the double-entry airtight cabinet and its height is adjustable. The double-entry airtight cabinet has openings at both ends, with single-acting doors installed at these openings. When all single-acting doors are closed, the toxic gases inside are evacuated through the extraction pipe. The alternating opening and closing of the double doors and the extraction design achieve zero leakage of toxic gases, while the adjusting bracket ensures stable conveying.

[0020] In some specific embodiments, the heavy-duty self-locking photovoltaic glass panel rack includes a rack body, clearance crossbars, and tandem lifting and locking covers. The rack body is a multi-layer frame. The clearance crossbars are welded to the bottom surface of each loading layer to form varying heights. A tandem lifting and locking cover is installed at the top of each loading layer, and the covers are connected in series via metal rods vertically inserted into the rack body. Each metal rod has a gripper at its top. Under normal conditions, the tandem lifting and locking covers remain closed, securing the photovoltaic glass panel. During loading and unloading operations, the top rack unlocking clamp grips the gripper at the top of the metal rod and lifts it upwards, forcing all covers to rise and expose the photovoltaic glass panel's placement position. The multi-layer frame and cover linkage mechanism improves loading efficiency, and the gripper design facilitates automated unlocking.

[0021] In some specific embodiments, the top rack unlocking clamp is a lifting clamping mechanism, installed on the top of the inner wall of the hybrid enclosed frame and directly opposite the heavy-duty self-locking photovoltaic glass panel rack on the three-stage rack conveyor line. The top unlocking clamp is precisely aligned with the rack, ensuring the reliability of the cover plate opening and closing action.

[0022] In some specific embodiments, the airtight compartment for loading and unloading is equipped with a gas detection device, an emergency stop button, a safety light curtain, and an alarm device. Multiple detection and emergency devices ensure operational safety within the confined space.

[0023] According to a second aspect of the present invention, an automatic loading and unloading method for an automatic loading and unloading system for a fully enclosed photovoltaic glass panel as described above is provided, comprising:

[0024] S1: The loading and unloading buffer device of the airtight feeding system receives and buffers the photovoltaic glass panels input from the outside;

[0025] S2: The overhead rail-type two-axis loading and unloading robot of the palletizing equipment lifts the buffered photovoltaic glass panels from the three-level material rack conveyor line and loads them into the heavy-duty self-locking photovoltaic glass panel material rack. At the same time, the series lifting and locking cover is opened by controlling the top material rack unlocking clamp.

[0026] S3: After the fully loaded material rack is dried by the drying line, it is conveyed to the airtight unloading system. The output direction is adjusted by adjusting the spacing of the conveyor line, and the right-angle conveyor cabinet is aligned with the discharge port of the external equipment after correction.

[0027] S4: In the airtight loading and unloading conveyor cabinet, the airtight environment is maintained by alternately opening and closing the single-acting door and the air extraction pipe to complete the safe output of the photovoltaic glass panel;

[0028] S5: Empty racks are returned from the airtight unloading system to the airtight loading system via the internal circulation track of the palletizing system, forming a cyclic operation process.

[0029] This system overcomes three major challenges in photovoltaic glass panel production through its fully enclosed design, automated handling mechanism, airtight transmission control, and intelligent cycle adjustment: 1. The risk of toxic gas leakage is completely isolated using multiple sealing and extraction mechanisms; 2. Loss during handling large, fragile items is minimized by an innovative bottom-lifting robot and self-locking rack structure; 3. Insufficient production line compatibility is addressed by adjusting the spacing of the conveyor lines to achieve flexible equipment interface adaptation. The system's modules work collaboratively to form an intelligent closed loop of "buffering-palletizing-drying-depalletizing-circulation," significantly improving production efficiency, reducing manual intervention, and simultaneously meeting environmental protection, safety, and flexible production requirements, providing a revolutionary solution for photovoltaic glass manufacturing. Specific beneficial effects are as follows:

[0030] 1. Fully enclosed design: The system adopts a fully enclosed design, which can effectively isolate harmful gases inside the drying line and ensure the health and safety of operators.

[0031] 2. Automated loading and unloading: The system enables automated loading and unloading of photovoltaic glass panels, improving production efficiency and reducing labor costs.

[0032] 3. Buffer function: Equipped with a buffer mechanism, it can adjust for cycle time disruptions caused by unstable external input or output speeds, ensuring the continuity and stability of the production process.

[0033] 4. Adaptable to handling large, heavy-duty, and fragile items: The system design fully considers the handling requirements of large, heavy-duty, and fragile photovoltaic glass panels, ensuring the safety and stability of the handling process.

[0034] 5. Spacing adjustment function: The airtight feeding system includes an additional spacing adjustment conveyor line, which can adjust the alignment between the drying line outlet and the external equipment outlet, adapting to the actual situation of multiple production line upgrades and expansions. Attached Figure Description

[0035] The accompanying drawings are included to provide a further understanding of the embodiments and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments and, together with the description, serve to explain the principles of the invention. Other embodiments and many anticipated advantages of the embodiments will be readily recognized as they become better understood through reference to the following detailed description. Other features, objects, and advantages of this application will become more apparent from reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0036] Figure 1 This is a schematic diagram of the overall structure of an automatic loading and unloading system for a fully enclosed photovoltaic glass panel according to an embodiment of the present invention.

[0037] Figure 2 This is a schematic diagram of the structure of an airtight feeding system according to a specific embodiment of the present invention;

[0038] Figure 3 This is a schematic diagram of the structure of the feeding and palletizing equipment in an airtight feeding system according to a specific embodiment of the present invention;

[0039] Figure 4 This is a schematic diagram of the structure of an airtight feeding system according to a specific embodiment of the present invention;

[0040] Figure 5 This is a schematic diagram of the structure of the unloading and destacking device in an airtight unloading system according to a specific embodiment of the present invention;

[0041] Figure 6 This is a schematic diagram of the structure of the spacing adjustment conveyor line in a dense feeding system according to a specific embodiment of the present invention;

[0042] Figure 7 This is a schematic diagram of the structure of an airtight loading and unloading conveyor cabinet according to a specific embodiment of the present invention;

[0043] Figure 8 This is a schematic diagram of the structure of a heavy-duty self-locking photovoltaic glass panel rack according to a specific embodiment of the present invention;

[0044] Figure 9 This is a flowchart of the automatic loading and unloading method of an automatic loading and unloading system for fully enclosed photovoltaic glass panels according to an embodiment of the present invention.

[0045] Reference numerals in the attached diagrams: 1. Airtight feeding system; 1.1. Loading and unloading buffer equipment; 1.2. Loading and palletizing equipment; 1.2.1. Primary feeding conveyor line; 1.2.2. Secondary lifting conveyor line; 1.2.3. Tertiary material rack conveyor line; 1.2.4. Ceiling-mounted two-axis loading and unloading robot; 1.2.5. Top material rack unlocking clamp; 1.2.6. Hybrid enclosed frame; 2. Airtight unloading system; 2.1. Unloading and depalletizing equipment; 2.2. Spacing adjustment conveyor line 2.2.1. Conveyor line for groove turning; 2.2.2. Right-angle conveyor cabinet for alignment; 3. Internal circulation track for palletizing; 4. Airtight loading and unloading conveyor cabinet; 4.1. Double-pass airtight cabinet; 4.2. Conveyor line inside the cabinet; 4.3. Single-acting door; 4.4. Exhaust pipe; 4.5. Adjustment bracket; 5. Heavy-duty self-locking photovoltaic glass panel rack; 5.1. Main body of the rack; 5.2. Clearance crossbar; 5.3. Series lifting locking cover plate; 6. Airtight compartment for loading and unloading. Detailed Implementation

[0046] In the description of this invention, it should be noted 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," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0047] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "installation," "connection," and "fixation," 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 explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0048] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0049] Figure 1 A schematic diagram of an automatic loading and unloading system for a fully enclosed photovoltaic glass panel according to an embodiment of the present invention is shown, as follows: Figure 1 As shown, the fully enclosed automatic loading and unloading system for photovoltaic glass panels includes an airtight loading system 1, an airtight unloading system 2, a palletizing internal circulation track 3, an airtight loading and unloading conveyor cabinet 4, a heavy-duty self-locking photovoltaic glass panel rack 5, and an airtight compartment 6 for loading and unloading. The airtight loading system 1 and the airtight unloading system 2 are placed parallel to each other in the airtight loading and unloading compartment and are respectively connected to the inlet and outlet of the drying line. The two ends of the palletizing internal circulation track 3 are respectively connected to the outlet of the airtight loading system 1 and the inlet of the airtight unloading system 2, forming a circular track of "airtight loading system 1 - drying line - airtight unloading system 2 - palletizing internal circulation track 3 - airtight loading system 1". Multiple heavy-duty self-locking photovoltaic glass panel racks 5 run clockwise on this circular track. One end of the airtight loading and unloading conveyor cabinet 4 is connected to the inlet of the airtight loading system 1 and the outlet of the airtight unloading system 2, and the other end passes through the airtight compartment 6 and is connected to external equipment.

[0050] Figure 2 A schematic diagram of an airtight feeding system according to a specific embodiment of the present invention is shown, as follows: Figure 2 As shown, the airtight feeding system 1 includes a loading and unloading buffer device 1.1 and a feeding and palletizing device 1.2, which are connected in the order of "airtight loading and unloading conveyor rail - loading and unloading buffer device 1.1 - feeding and palletizing device 1.2 - drying line entrance", and the connection points of each pair are kept on the same horizontal line.

[0051] Figure 3 A schematic diagram of the structure of a feeding and palletizing device in an airtight feeding system according to a specific embodiment of the present invention is shown, as follows: Figure 3 As shown, the feeding and palletizing equipment 1.2 includes a primary input conveyor line 1.2.1, a secondary lifting conveyor line 1.2.2, a tertiary material rack conveyor line 1.2.3, a ceiling-mounted two-axis loading and unloading robot 1.2.4, a top material rack unlocking clamp 1.2.5, and a hybrid enclosed frame 1.2.6. The hybrid enclosed frame 1.2.6 serves as an external frame enclosing the other components. The primary input conveyor line 1.2.1, the secondary lifting conveyor line 1.2.2, and the tertiary material rack conveyor line 1.2.3 are placed sequentially along the long side of the hybrid enclosed frame 1.2.6. The primary input conveyor line 1.2.1 is connected to the loading and unloading buffer device 1.1, and the tertiary material rack conveyor line 1.2.3 is connected to the drying line inlet. The ceiling-mounted two-axis loading and unloading robot 1.2.4 is installed on the top of the inner wall of the hybrid enclosed frame 1.2.6 and its running direction is consistent with the conveyor line.

[0052] In a specific embodiment, the primary input conveyor line 1.2.1 has the lowest horizontal position, aligned with the internal conveyor line of the loading / unloading buffer device 1.1. The tertiary material rack conveyor line 1.2.3 has the highest horizontal position, aligned with the internal track of the drying line. The secondary lifting conveyor line 1.2.2 connects with the primary input conveyor line 1.2.1 and the tertiary lifting conveyor line 1.2.3 respectively to transfer photovoltaic glass panels. Considering that the on-site drying line is a fixed device and may not be aligned with the internal conveyor line of the buffer device, intermediate equipment is needed for height adjustment. The overhead track-type two-axis robot 1.2.4 lifts the photovoltaic glass panel along the direction of the secondary lifting conveyor line 1.2.2, lifting the entire photovoltaic glass panel from the rear. To prevent collisions between devices, the height of the primary input conveyor line 1.2.1 and the secondary lifting conveyor line 1.2.2 must be significantly lower than that of the tertiary lifting conveyor line 1.2.3 where the material rack is placed (i.e., to allow for operating space).

[0053] In a specific embodiment, the heavy-duty self-locking photovoltaic glass panel rack 5 is placed on the three-level rack conveyor line 1.2.3 and the top rack unlocking clamp 1.2.5 is located on the top of the inner wall of the hybrid enclosed frame 1.2.6, directly above the heavy-duty self-locking photovoltaic glass panel rack 5;

[0054] Figure 4 A schematic diagram of an airtight feeding system according to a specific embodiment of the present invention is shown, as follows: Figure 4 As shown, with Figure 2 Similar to the airtight feeding system 1, the airtight unloading system 2 includes a spacing adjustment conveyor line 2.2, an unloading and loading buffer device 1.1, and the spacing adjustment conveyor line 2.2 and the unloading and destacking device 2.1 are connected in the order of "airtight unloading and loading conveyor line rail - spacing adjustment conveyor line 2.2 - unloading and loading buffer device 1.1 - unloading and destacking device 2.1 - drying line outlet", but the running direction is opposite to that of the airtight feeding system 1; similarly, the connection points of each pair are kept on the same horizontal line.

[0055] Figure 5 A schematic diagram of the structure of a material unloading and destacking device in an airtight material unloading system according to a specific embodiment of the present invention is shown, as follows: Figure 5 As shown, the unloading and destacking equipment 2.1 has a structure that is basically the same as the loading and palletizing equipment 1.2, including a three-stage material rack conveyor line 1.2.3, a ceiling-mounted two-axis loading and unloading robot 1.2.4, a top material rack unlocking clamp 1.2.5, and a hybrid enclosed frame 1.2.6; after removing the primary input conveyor line 1.2.1 and the secondary lifting conveyor line 1.2.2, an opening is made on the side, and a spacing adjustment conveyor line 2.2 is set at the original position of the secondary lifting conveyor line 1.2.2.

[0056] Figure 6 A schematic diagram of the structure of a spacing adjustment conveyor line in a close-feeding system according to a specific embodiment of the present invention is shown, as follows: Figure 6As shown, the spacing adjustment conveyor line 2.2 includes a groove turning conveyor line 2.2.1 and a right-angle conveyor line cabinet 2.2.2 for correction. The groove turning conveyor line 2.2.1 is installed into the unloading and destacking equipment 2.1 and replaces the secondary lifting conveyor line 1.2.2. One end of the right-angle conveyor line cabinet 2.2.2 for correction is connected to the groove turning conveyor line 2.2.1, and the other end is connected to the unloading and loading buffer equipment 1.1.

[0057] Figure 7 A schematic diagram of the structure of an airtight loading and unloading conveyor cabinet according to a specific embodiment of the present invention is shown, as follows: Figure 7 As shown, the airtight loading and unloading conveyor rail includes a double-pass airtight cabinet 4.1, an internal conveyor line 4.2, a single-action door 4.3, an exhaust pipe 4.4, and an adjusting bracket 4.5. The adjusting bracket 4.5 is fixed to the ground at both ends and to the ground of the double-pass airtight cabinet 4.1, respectively. The internal conveyor line 4.2 is fixed inside the double-pass airtight cabinet 4.1 with both ends facing the opening of the double-pass airtight cabinet 4.1. The upper surface of the internal conveyor line 4.2 is at the same level as the discharge end of the airtight unloading system 2 or the inlet end of the airtight loading system 1. The exhaust pipe 4.4 is installed on the top of the double-pass airtight cabinet 4.1 and is connected to the external exhaust equipment not shown in the figure. The single-action door 4.3 is set at the openings at both ends of the double-pass airtight cabinet 4.1. When the single-action door 4.3 is closed, the double-pass airtight cabinet 4.1 is completely airtight.

[0058] Figure 8 A schematic diagram of the structure of a heavy-duty self-locking photovoltaic glass panel rack according to a specific embodiment of the present invention is shown, as follows: Figure 8 As shown, the heavy-duty self-locking photovoltaic glass panel rack 5 includes a rack body 5.1, clearance crossbars 5.2, and a series-connected lifting locking cover plate 5.3. The rack body 5.1 is a multi-layer stainless steel welded frame. The clearance crossbars 5.2 are two square tubes welded to the bottom surface of each layer of the rack body 5.1. The series-connected lifting locking cover plate 5.3 is inserted into the frame of the rack body 5.1 and a cover plate is placed on the top of each layer. All cover plates can be lifted at the same time.

[0059] Continue to refer to Figure 9 , Figure 9 A flowchart illustrating the automatic loading and unloading method of an automatic loading and unloading system for fully enclosed photovoltaic glass panels according to an embodiment of the present invention is shown, as follows: Figure 9 As shown, the automatic loading and unloading method specifically includes:

[0060] S1: The loading and unloading buffer device of the airtight feeding system receives and buffers the photovoltaic glass panels input from the outside;

[0061] S2: The overhead rail-type two-axis loading and unloading robot of the palletizing equipment lifts the buffered photovoltaic glass panels from the three-level material rack conveyor line and loads them into the heavy-duty self-locking photovoltaic glass panel material rack. At the same time, the series lifting and locking cover is opened by controlling the top material rack unlocking clamp.

[0062] S3: After the fully loaded material rack is dried by the drying line, it is conveyed to the airtight unloading system. The output direction is adjusted by adjusting the spacing of the conveyor line, and the right-angle conveyor cabinet is aligned with the discharge port of the external equipment after correction.

[0063] S4: In the airtight loading and unloading conveyor cabinet, the airtight environment is maintained by alternately opening and closing the single-acting door and the air extraction pipe to complete the safe output of the photovoltaic glass panel;

[0064] S5: Empty racks are returned from the airtight unloading system to the airtight loading system via the internal circulation track of the palletizing system, forming a cyclic operation process.

[0065] This invention provides a fully enclosed operating environment comprised of an airtight loading system, an airtight unloading system, an internal circulation track for palletizing, an airtight conveyor cabinet, and loading / unloading compartments. A ceiling-mounted two-axis robot lifts photovoltaic glass panels from the bottom, complemented by a series of lifting covers on a heavy-duty self-locking material rack and an adjustable conveyor line, achieving fully automated and safe handling of large-size, heavy-duty photovoltaic glass panels. This system boasts the following core technological advantages: First, multiple sealing structures and extraction devices completely isolate toxic gas leaks during the drying process, ensuring personnel health; second, the innovative bottom-lifting handling and self-locking material rack design minimizes the breakage rate of fragile items to near zero; third, the built-in buffer mechanism and adjustable conveyor line solve production rhythm disruptions and equipment docking problems, significantly improving production efficiency while maintaining high safety and production flexibility.

[0066] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0067] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

[0068] The specific embodiments of the present invention described above do not constitute a limitation on the scope of protection of the present invention. Any other corresponding changes and modifications made in accordance with the technical concept of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. An automatic loading and unloading system for a fully-enclosed photovoltaic glass panel, characterized by, include: The airtight feeding system and the airtight unloading system are connected to the inlet and outlet of the drying line, respectively, and both are equipped with loading and unloading buffer devices and palletizing devices. The internal circulation track of the palletizing system connects the airtight feeding system and the airtight unloading system, and is used for the unloaded heavy-duty self-locking photovoltaic glass panel rack to return from the airtight unloading system to the airtight feeding system, thereby completing the recycling of the heavy-duty self-locking photovoltaic glass panel rack. An airtight loading and unloading conveyor cabinet is used to transfer photovoltaic glass panels from the outside to the airtight loading system and from the airtight unloading system to the outside in an airtight environment. An airtight compartment for loading and unloading, which encloses and houses the airtight loading system, airtight unloading system, and airtight loading and unloading conveyor cabinet; The heavy-duty self-locking photovoltaic glass panel rack is used to support the photovoltaic glass panels and lock the liquid during the drying process. The airtight feeding system is equipped with a spacing adjustment conveyor line and a right-angle conveyor line cabinet for correction, so as to correct the alignment between the outlet of the drying line and the outlet of the equipment. The palletizing equipment includes a top rack unlocking clamp for controlling the opening and closing of the series-linked lifting and locking cover plates of the rack. The heavy-duty self-locking photovoltaic glass panel rack includes a rack body, clearance crossbars, and series-linked lifting and locking cover plates. The rack body is a multi-layer frame. The clearance crossbars are welded to the bottom surface of each loading layer to form a height difference. The series-linked lifting and locking cover plates are provided with a cover plate at the top of each loading layer, and the cover plates are connected in series by metal rods vertically inserted into the rack body. The top of the metal rods has a gripper. Under normal conditions, the series-linked lifting and locking cover plates remain closed to hold the photovoltaic glass panels. During loading and unloading operations, the top rack unlocking clamp clamps the gripper at the top of the metal rods and lifts them upwards, forcing all the cover plates to rise and expose the placement position of the photovoltaic glass panels.

2. The automatic loading and unloading system for a fully enclosed photovoltaic glass panel according to claim 1, characterized in that, The palletizing equipment includes a primary input conveyor line, a secondary lifting conveyor line, a tertiary material rack conveyor line, a ceiling-mounted two-axis loading / unloading robot, and a hybrid enclosed frame. The primary input conveyor line has the lowest horizontal position and is flush with the conveyor line inside the loading / unloading buffer equipment. The secondary lifting conveyor line connects to the primary input conveyor line and the tertiary material rack conveyor line respectively through lifting motion. The tertiary material rack conveyor line has the highest horizontal position and is flush with the internal track of the drying line. The ceiling-mounted two-axis loading / unloading robot is installed on the top of the hybrid enclosed frame.

3. The automatic loading and unloading system for a fully enclosed photovoltaic glass panel according to claim 2, characterized in that, The overhead track-type two-axis loading and unloading robot lifts the photovoltaic glass panel from the bottom for transport during loading and unloading.

4. The automatic loading and unloading system for a fully enclosed photovoltaic glass panel according to claim 3, characterized in that, The spacing adjustment conveyor line includes a groove-turning conveyor line, which is used to receive the photovoltaic glass panels unloaded by the overhead track-type two-axis loading and unloading robot and change their transport direction to enter the right-angle conveyor line cabinet for correction.

5. The automatic loading and unloading system for a fully enclosed photovoltaic glass panel according to claim 2, characterized in that, The airtight loading and unloading conveyor cabinet includes a double-pass airtight cabinet, an internal conveyor line, a single-acting door, an exhaust pipe, and an adjusting bracket. The adjusting bracket supports the bottom of the double-pass airtight cabinet and its height is adjustable. The double-pass airtight cabinet has openings at both ends, and the single-acting door is installed at the opening. When the single-acting door is fully closed, the toxic gas inside will be evacuated through the exhaust pipe.

6. The automatic loading and unloading system for a fully enclosed photovoltaic glass panel according to claim 2, characterized in that, The top rack unlocking clamp is a lifting clamping mechanism, which is installed on the top of the inner wall of the hybrid enclosed frame and directly opposite the heavy-duty self-locking photovoltaic glass plate rack on the three-level rack conveyor line.

7. The automatic loading and unloading system for a fully enclosed photovoltaic glass panel according to claim 1, characterized in that, The airtight compartment for loading and unloading is equipped with a gas detection device, an emergency stop button, a safety light curtain, and an alarm device.

8. An automatic loading and unloading method for an automatic loading and unloading system for fully enclosed photovoltaic glass panels as described in claim 5, characterized in that, include: S1: The externally input photovoltaic glass panel is received and buffered through the loading and unloading buffer device of the airtight feeding system; S2: The overhead rail-type two-axis loading and unloading robot of the palletizing equipment lifts the buffered photovoltaic glass panel from the three-level material rack conveyor line and loads it into the heavy-duty self-locking photovoltaic glass panel material rack. At the same time, the series lifting and locking cover is opened by controlling the top material rack unlocking clamp. S3: After the fully loaded material rack is dried by the drying line, it is conveyed to the airtight unloading system. The output direction is adjusted by the spacing adjustment conveyor line, and the right-angle conveyor line cabinet is aligned with the discharge port of the external equipment. S4: In the airtight loading and unloading conveyor cabinet, the airtight environment is maintained by alternately opening and closing the single-acting door and the air extraction pipe to complete the safe output of the photovoltaic glass panel; S5: The empty rack is returned from the airtight unloading system to the airtight loading system via the inner circulation track of the palletizing system, forming a cyclic operation process.

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