A glass panel stress detection and laser engraving apparatus

Abstract

The present application aims to provide a high integration degree, which is conducive to providing production efficiency of glass panel stress detection and laser engraving equipment. The present application comprises a rack, which is sequentially provided with a positioning code scanning module, a detection laser engraving module and a stacking module in the conveying direction. The detection laser engraving module comprises a first linear module, a second linear module, a laser engraving machine and a stress testing machine. The first linear module and the second linear module are arranged in parallel and are located on both sides of the laser engraving machine respectively. The laser engraving machine and the stress testing machine are located on the same side of the first linear module. The action end of the first linear module is provided with a first suction disc assembly and a second suction disc assembly. The action end of the second linear module is provided with a third suction disc assembly. The present application is applied to the technical field of glass quality detection.

Description

Technical Field

[0001] This invention applies to the technical field of glass quality inspection, and particularly relates to a glass panel stress detection and laser engraving device. Background Technology

[0002] With the advancement of science and technology and the demands of the 3C industry, electronic devices such as mobile phones and tablets are constantly evolving towards miniaturization and integration. During use, these devices inevitably experience accidental drops, leading to product damage. The touchscreen of a smartphone is covered by a glass panel, beneath which the touchscreen, camera, and various optical sensors are housed. Therefore, the quality of the glass panel is a crucial factor in assessing the drop resistance of a smartphone. The glass panel is a stress-balanced body. If the compressive stress is too low, the glass panel's rigidity and strength will be insufficient to meet the drop resistance requirements of a smartphone. Conversely, if the compressive stress is too high, while a high-strength glass panel can be achieved to a certain extent, high internal tensile stress can lead to explosive cracking under slight impact, or even spontaneous breakage. Therefore, stress testing is a critical step in inspecting glass panels. After manufacturing, a QR code or other pattern is laser-engraved onto the glass panel. This identification code corresponds to the glass panel's identity, recording relevant information such as test items and results throughout the manufacturing process, enabling traceability of the glass panel's information. Therefore, laser engraving is a vital step before the glass panel leaves the factory.

[0003] When glass panels arrive, they are labeled or have QR codes attached. These labels or codes must be scanned before stress testing and laser engraving to obtain the specific parameters of the incoming glass panels and determine if they need to be flipped. However, the current positioning and scanning process is mostly done manually, resulting in low efficiency. Furthermore, the existing stress testing and laser engraving processes are largely done manually, with workers manually placing the glass into stress testing instruments or laser engraving machines to engrave product codes. This production model requires a large workforce, leading to high labor intensity for operators, inconsistent operating techniques, difficulty in distinguishing between good and defective products, quality inconsistencies, and low sorting efficiency. While intelligent equipment exists that can achieve semi-automatic loading and unloading, improving production efficiency to some extent, its stress testing and laser engraving lines are independent. Each process requires multiple robotic arms for loading and unloading, and multiple drive modules for transfer, resulting in excessive auxiliary equipment, high production costs, and difficulties in product organization and storage, as well as potential confusion between good and defective products.

[0004] For example, the laser engraving and scanning device with publication number CN108372127A can immediately perform scanning verification after laser engraving, effectively preventing products with defective codes from flowing to subsequent processes. However, it lacks a scanning and positioning process before laser engraving. If the glass panel is received with the front and back reversed or mixed with other models, the test results will be inaccurate. Furthermore, it can only perform laser engraving on mobile phone components and cannot perform stress detection on glass panels. For different product models, the base surface to be laser engraved on the glass panel is not on the same surface as the base surface when the material arrives, requiring manual 180-degree rotation, resulting in low work efficiency and inaccurate positioning. Therefore, it is necessary to provide a highly integrated glass panel stress detection and laser engraving device that improves production efficiency. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a glass panel stress detection and laser engraving equipment with high integration and which is conducive to improving production efficiency.

[0006] The technical solution adopted in this invention is as follows: This invention includes a frame, on which a positioning and scanning module, a detection and laser engraving module, and a stacking module are sequentially arranged along the conveying direction; the detection and laser engraving module includes a first linear module, a second linear module, a laser engraving machine, and a stress testing machine. The first linear module and the second linear module are arranged parallel to each other and are located on opposite sides of the laser engraving machine. The laser engraving machine and the stress testing machine are located on the same side of the first linear module. The moving end of the first linear module is provided with a first suction cup assembly and a second suction cup assembly, and the moving end of the second linear module is provided with a third suction cup assembly; after the glass panel is positioned and scanned by the positioning and scanning module, the first suction cup assembly picks up the glass panel from the output end of the positioning and scanning module and conveys it to the stress testing machine for testing. After the test is completed, the glass panel is transferred by the second suction cup assembly to the third suction cup assembly, and finally, after being laser engraved by the laser engraving machine, it is input into the inlet end of the stacking module.

[0007] As can be seen from the above scheme, the positioning and scanning module is used to locate and scan the glass panel, the detection and laser engraving module performs stress testing and laser engraving on the glass panel, and the stacking module classifies and summarizes the tested glass panels. The actuating end of the first linear module is equipped with a first suction cup assembly and a second suction cup assembly. The first suction cup assembly picks up the glass panel from the positioning and scanning module and moves it above the stress testing machine through the first linear module. The first suction cup assembly places the glass panel at the feeding position of the stress testing machine, and the stress testing machine performs stress testing on the glass panel. After the test is completed, the second suction cup assembly picks up the glass panel and moves it above the second linear module through the first linear module. The second suction cup assembly docks with the third suction cup assembly to realize the transfer of the glass panel. The second linear module moves the glass panel directly below the laser engraving machine, and the laser engraving machine performs laser engraving on the surface of the glass panel. After the laser engraving is completed, the glass panel is assigned to the feeding end of the stacking module according to the test results. The glass panel stress detection and laser engraving equipment has a high degree of integration and automation. The stress detection machine and the laser engraving machine share a single production line, enabling orderly stress detection and laser engraving, reducing energy consumption during transportation, and is also equipped with the positioning and scanning module.

[0008] In a preferred embodiment, the positioning and scanning module includes a feeding component, a vision positioning component, a scanning component, and a robotic arm. The robotic arm is equipped with a fourth suction cup component at its moving end. The robotic arm is located on one side of the vision positioning component and the scanning component, and the scanning component is located at the discharge end of the vision positioning component.

[0009] The stacking module includes a third linear module and several unloading components. The third linear module is disposed on one side of the several unloading components. The actuating end of the third linear module is provided with a fifth suction cup component. The fifth suction cup component is connected and cooperates with the third suction cup component to distribute the tested glass panels into the several unloading components.

[0010] As can be seen from the above scheme, a manual or robotic arm places a tray containing a glass panel onto the feeding component, which then outputs the tray to the work station. The fourth suction cup component picks up the glass panel and places it on the vision positioning component for visual positioning. After positioning, the fourth suction cup component moves the glass panel to the barcode scanning component so that the barcode scanning component can scan the QR code on the glass panel to obtain parameter information and verify whether the incoming material information is correct. The fifth suction cup component docks with the third suction cup component and is distributed to each of the unloading components according to the test results.

[0011] In a preferred embodiment, the glass panel stress detection and laser engraving equipment further includes two sets of flipping modules. The two sets of flipping modules are respectively disposed on one side of the scanning component and the receiving end of the second linear module. Each flipping module includes a first mounting frame, a servo motor, and a rotating shaft. The first mounting frame is fixed on the frame, the servo motor is disposed on the first mounting frame, one end of the rotating shaft is connected to the output shaft of the servo motor, and the other end of the rotating shaft is provided with a sixth suction cup assembly. The sixth suction cup assembly is flipped 180 degrees under the drive of the servo motor to realize the flipping action of the glass panel.

[0012] As can be seen from the above scheme, the flipping module on one side of the scanning component is applied to the base surface of the QR code on the glass panel, which is opposite to the base surface that needs to be subjected to stress pressing test. Therefore, the glass panel needs to be flipped. The first mounting bracket is equipped with a telescopic cylinder. The actuating end of the telescopic cylinder is connected to the rotating shaft, which drives the rotating shaft to move up and down. The telescopic cylinder drives the sixth suction cup assembly at the rotating shaft to move downward. The sixth suction cup assembly picks up the glass panel on the scanning component. The servo motor drives the rotating shaft to rotate, causing the glass panel to rotate 180 degrees, realizing the flipping action of the glass panel, so that the first suction cup assembly can receive the material. Similarly, the flipping module at the receiving end of the second linear module is used on a glass panel where the base surface to be subjected to stress pressing test and the base surface to be laser engraved are opposite to each other. Therefore, the glass panel needs to be flipped. The flipping module is compatible with stress testing and laser engraving of various glass panels, eliminating the need for manual flipping, improving work efficiency, and has good practicality. The rotating shaft is connected to a sensing plate, and photoelectric sensors are provided at both the original end and the end end. The sensing plate and the photoelectric sensor cooperate with each other's electrical signals. Compared with other flipping mechanisms, the flipping angle of the flipping module is more accurate.

[0013] In a preferred embodiment, both the loading and unloading components include an empty tray module, a full tray module, and a lifting platform. The empty tray module of the loading component is located above the full tray module, and the empty tray module of the unloading component is located below the full tray module. Both the empty tray module and the full tray module include a first conveyor line, a lifting component, four sets of material frames, and four sets of support components. The lifting component is located inside the first conveyor line, the four sets of material frames are symmetrically arranged outside the first conveyor line, and the four sets of support components are symmetrically arranged above the outside of the first conveyor line. Each of the four sets of support components includes a drive cylinder, the actuating end of which is connected to a support block. The support block supports the tray on the material frame through the drive of the drive cylinder. The actuating end of the lifting platform is provided with a second conveyor line, which is connected to the first conveyor line through the drive of the lifting platform to realize the transfer of the tray.

[0014] As can be seen from the above scheme, the empty tray module and the full tray module of the feeding component are respectively the first empty tray module and the first full tray module, and the empty tray module and the full tray module of the unloading component are respectively the second empty tray module and the second full tray module. The first empty tray module and the second empty tray module are both used to stack empty pallets, and the first full tray module and the second full tray module are both used to stack pallets with material. The support block supports the pallet on the material frame through the drive cylinder. When material needs to be discharged, the second conveyor line is connected and cooperated with the first conveyor line. The support block plays the role of supporting the trays, and the material frame plays the role of limiting and fixing the pallets.

[0015] In a preferred embodiment, the visual positioning component includes a second mounting bracket, a light source, a lens, and an industrial camera. The second mounting bracket is fixed on the frame, the light source is located at the top of the second mounting bracket, the industrial camera is longitudinally located at the bottom of the second mounting bracket, the lens is connected to the industrial camera, and the second mounting bracket has a through hole that matches the light-transmitting hole of the light source, with the lens facing the light-transmitting hole through the through hole.

[0016] As can be seen from the above scheme, when the glass panel moves above the light source, the industrial camera scans the glass panel through the light-transmitting hole of the light source, and the robot adjusts the position of the glass panel until the industrial camera scans the center of the glass panel, thereby determining the original position, ensuring the precise positioning of the robot, and avoiding deviations when the robot places the glass panel on the barcode scanning component.

[0017] In a preferred embodiment, the scanning assembly includes a third mounting bracket, a fourth linear module, a slide cylinder, and a barcode scanner. The third mounting bracket is fixed to the frame, and a seventh suction cup assembly is provided at the top of the third mounting bracket. The fourth linear module is disposed on one side of the third mounting bracket. The slide cylinder is longitudinally disposed at the actuating end of the fourth linear module, and the barcode scanner is longitudinally disposed at the actuating end of the slide cylinder. The barcode scanner scans the QR code on the glass panel through the drive of the fourth linear module.

[0018] As can be seen from the above scheme, when the glass panel moves to the seventh suction cup assembly, the barcode scanner is located below the glass panel and scans the QR code on the glass panel to obtain the incoming material information and specifications of the glass panel, thereby determining whether the glass panel needs to be flipped. At the same time, the barcode scanner moves through the fourth linear module to ensure that the QR code is at any position on the glass panel.

[0019] In a preferred embodiment, the glass panel stress testing and laser engraving equipment further includes two sets of material preparation components. The two sets of material preparation components are respectively arranged between the feeding component and the vision positioning component, on one side of the stress testing machine. Each set of material preparation components includes a fourth mounting frame, which is fixed on the frame. An eighth suction cup component is provided at the top of the fourth mounting frame.

[0020] As can be seen from the above scheme, when the robotic arm unloads the pallet on the second conveyor line, there are two glass panels remaining on the pallet. The robotic arm first picks up the second-to-last glass panel and places it on the eighth suction cup assembly, and then picks up the last glass panel and places it on the positioning and scanning module. After the last glass panel is positioned and scanned, the robotic arm picks up the glass panel on the eighth suction cup assembly. At the same time, the feeding assembly changes the pallet. By setting up the feeding assembly, it is beneficial to improve work efficiency, ensure uninterrupted feeding of glass panels, and reduce the waiting time for changing pallets.

[0021] In a preferred embodiment, the support component of the empty tray module further includes four sets of protrusions. The four sets of protrusions are symmetrically and rotatably arranged above the outer side of the first conveyor line. When the protrusions are in a horizontal plane, they support the tray. When the protrusions rotate upward 90 degrees, they allow the tray to rise and make way.

[0022] As can be seen from the above scheme, since the empty tray module of the feeding component is the first empty tray module, the first empty tray module is used to recycle empty trays. The original position of the protrusion is in a horizontal state. When the lifting component lifts the empty tray, the empty tray pushes the protrusion upward and rotates it 90 degrees. When the empty tray is higher than the protrusion, the protrusion rotates downward 90 degrees due to its own weight and returns to its original position. When the lifting component drives the empty tray to move downward, the protrusion supports the empty tray, realizing the recycling and stacking of empty trays. The protrusion replaces the drive cylinder, effectively reducing costs.

[0023] In a preferred embodiment, the full-pan module further includes a lifting cylinder, which is longitudinally arranged at the discharge end of the first conveyor line. The actuating end of the lifting cylinder is provided with a stop block, which realizes the release of material from the pallet by driving the lifting cylinder.

[0024] As can be seen from the above scheme, when it is necessary to unload the pallet, the lifting cylinder drives the stop block downward, and the pallet flows to the working position. The stop block can control the entry and exit of the pallet and ensure the orderly loading of the pallet.

[0025] In a preferred embodiment, the number of feeding components is three, and the three feeding components are arranged side by side on one side of the third linear module. The three feeding components respectively collect good products, products that fail the barcode scanning, and products that fail the stress test; the number of stress testing machines is two, and the frame is equipped with two sets of drive modules. The two sets of stress testing machines are respectively set on the actuating ends of the two sets of drive modules to realize alternating feeding and unloading.

[0026] As can be seen from the above scheme, the three sets of feeding components are the first feeding component, the second feeding component, and the third feeding component. When the glass panel is scanned as a defective product by the positioning and scanning module, the glass panel flows directly into the first feeding component without undergoing stress testing and laser engraving. When the glass panel is tested as a defective product by the stress testing machine, the glass panel flows into the second feeding component without undergoing laser engraving. When the glass panel passes the stress testing machine test and undergoes laser engraving, the glass panel flows into the third feeding component, thus achieving the classification and categorization of the glass panels. The two sets of stress testing machines alternately feed and unload the glass panels on the frame through the drive module, ensuring uninterrupted testing of the glass panels and improving work efficiency. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0028] Figure 2 This is a three-dimensional structural diagram of the positioning and scanning module.

[0029] Figure 3This is a three-dimensional structural diagram of the laser engraving detection module;

[0030] Figure 4 This is a three-dimensional structural diagram of the stacking module;

[0031] Figure 5 This is a three-dimensional structural diagram of the flip module;

[0032] Figure 6 This is a three-dimensional structural diagram of the visual positioning component;

[0033] Figure 7 This is a three-dimensional structural diagram of the scanning component;

[0034] Figure 8 This is a three-dimensional structural diagram of the feeding assembly;

[0035] Figure 9 This is a three-dimensional structural diagram of the material preparation component;

[0036] Figure 10 This is an enlarged view of part A of the feeding assembly;

[0037] Figure 11 This is an enlarged view of part B in the feeding assembly. Detailed Implementation

[0038] like Figures 1 to 11 As shown, in this embodiment, the present invention includes a frame on which a positioning scanning module 3, a detection laser engraving module 4, and a stacking module 5 are sequentially arranged along the conveying direction. The detection laser engraving module 4 includes a first linear module 41, a second linear module 42, a laser engraving machine 43, and a stress testing machine 44. The first linear module 41 and the second linear module 42 are arranged parallel to each other and are located on opposite sides of the laser engraving machine 43. The laser engraving machine 43 and the stress testing machine 44 are located on the same side of the first linear module 41. The actuating end of the line module 41 is provided with a first suction cup assembly 21 and a second suction cup assembly 22, and the actuating end of the second linear module 42 is provided with a third suction cup assembly 23. After the glass panel is positioned and scanned by the positioning and scanning module 3, the first suction cup assembly 21 picks up the glass panel from the output end of the positioning and scanning module 3 and conveys it to the stress testing machine 44 for testing. After the test is completed, it is transferred by the second suction cup assembly 22 to the third suction cup assembly 23, and finally laser-engraved by the laser engraving machine 43 and input into the feeding end of the stacking module 5.

[0039] In this embodiment, the positioning and scanning module 3 includes a feeding component 32, a vision positioning component 33, a scanning component 34, and a robotic arm 31. The robotic arm 31 has a fourth suction cup component 24 at its actuating end. The robotic arm 31 is located on one side of the vision positioning component 33 and the scanning component 34. The scanning component 34 is located at the discharge end of the vision positioning component 33. The stacking module 5 includes a third linear module 51 and several unloading components 52. The third linear module 51 is located on one side of the several unloading components 52. The actuating end of the third linear module 51 has a fifth suction cup component 25. The fifth suction cup component 25 docks with the third suction cup component 23 and distributes the tested glass panels into the several unloading components 52.

[0040] In this embodiment, the glass panel stress detection and laser engraving equipment further includes two sets of flipping modules 6. The two sets of flipping modules 6 are respectively disposed on one side of the scanning component 34 and the receiving end of the second linear module 42. Each flipping module 6 includes a first mounting frame 61, a servo motor 62, and a rotating shaft 63. The first mounting frame 61 is fixed on the frame, and the servo motor 62 is disposed on the first mounting frame 61. One end of the rotating shaft 63 is connected to the output shaft of the servo motor 62, and the other end of the rotating shaft 63 is provided with a sixth suction cup assembly 26. The sixth suction cup assembly 26 is rotated 180 degrees under the drive of the servo motor 62 to realize the flipping action of the glass panel.

[0041] In this embodiment, both the feeding assembly 32 and the unloading assembly 52 include an empty tray module 7, a full tray module 8, and a lifting platform 9. The empty tray module 7 of the feeding assembly 32 is located above the full tray module 8, and the empty tray module 7 of the unloading assembly 52 is located below the full tray module 8. Both the empty tray module 7 and the full tray module 8 include a first conveyor line 71, a lifting assembly 72, four sets of material frames 73, and four sets of support assemblies 74. The lifting assembly 72 is located inside the first conveyor line 71. The four sets of material frames 73 are symmetrically arranged outside the first conveyor line 71, and the four sets of support components 74 are symmetrically arranged above the outside of the first conveyor line 71. Each set of support components 74 includes a drive cylinder 741. The actuating end of the drive cylinder 741 is connected to a support block 742. The support block 742 supports the pallet on the material frame 73 by the drive of the drive cylinder 741. The actuating end of the lifting platform 9 is provided with a second conveyor line 91. The second conveyor line 91 is connected to the first conveyor line 71 by the drive of the lifting platform 9 to realize the transfer of the pallet.

[0042] In this embodiment, the visual positioning component 33 includes a second mounting bracket 331, a light source 332, a lens 333, and an industrial camera 334. The second mounting bracket 331 is fixed on the frame. The light source 332 is disposed at the top of the second mounting bracket 331. The industrial camera 334 is longitudinally disposed at the bottom of the second mounting bracket 331. The lens 333 is connected to the industrial camera 334. The second mounting bracket 331 has a through hole that matches the light-transmitting hole of the light source 332. The lens 333 faces the light-transmitting hole through the through hole.

[0043] In this embodiment, the barcode scanning assembly 34 includes a third mounting bracket 341, a fourth linear module 342, a slide cylinder 343, and a barcode scanner 344. The third mounting bracket 341 is fixed on the frame, and a seventh suction cup assembly 27 is provided at the top of the third mounting bracket 341. The fourth linear module 342 is disposed on one side of the third mounting bracket 341. The slide cylinder 343 is longitudinally disposed at the actuating end of the fourth linear module 342, and the barcode scanner 344 is longitudinally disposed at the actuating end of the slide cylinder 343. The barcode scanner 344 scans the QR code on the glass panel by being driven by the fourth linear module 342.

[0044] In this embodiment, the glass panel stress detection and laser engraving equipment further includes two sets of material preparation components 10. The two sets of material preparation components 10 are respectively disposed between the feeding component 32 and the vision positioning component 33, on one side of the stress testing machine 44. Both sets of material preparation components 10 include a fourth mounting frame 11, which is fixed on the frame. An eighth suction cup component 28 is provided at the top of the fourth mounting frame 11.

[0045] In this embodiment, the support component 74 of the empty tray module 7 further includes four sets of protrusions 12. The four sets of protrusions 12 are symmetrically and rotatably arranged above the outer side of the first conveyor line 71. When the protrusions 12 are on the horizontal plane, they support the tray. When the protrusions 12 rotate upward 90 degrees, they allow the tray to rise and make way.

[0046] In this embodiment, the full-pan module 8 further includes a lifting cylinder 81, which is longitudinally arranged at the discharge end of the first conveyor line 71. The actuating end of the lifting cylinder 81 is provided with a stop block 82, which realizes the release of the pallet by driving the lifting cylinder 81.

[0047] In this embodiment, there are three sets of feeding components 52, which are arranged side by side on one side of the third linear module 51. The three sets of feeding components 52 respectively collect good products, products that fail the barcode scanning test, and products that fail the stress test. There are two sets of stress testing machines 44. The frame is equipped with two sets of drive modules 13. The power source of both sets of drive modules 13 is a servo motor, and the transmission module is a lead screw module. Linear guide rails are provided on both sides of the lead screw module. The two sets of stress testing machines 44 are respectively arranged on the sliders of the two sets of lead screw modules and are slidably connected to the two sets of linear guide rails, thereby realizing alternating feeding and unloading.

[0048] Working principle of the invention:

[0049] A person or a robot places a tray containing a glass panel onto the feeding assembly. The second conveyor line of the feeding assembly is connected to the first conveyor line, and the tray is transported to the work position.

[0050] When the robotic arm picks up the glass panel and places it above the light source, the industrial camera scans the glass panel through the light aperture of the light source. The robotic arm adjusts the position of the glass panel until the industrial camera scans the center of the glass panel, thereby determining the original position.

[0051] When the glass panel moves to the seventh suction cup assembly, the barcode scanner is located below the glass panel and scans the QR code on the glass panel to obtain the incoming material information and specifications of the glass panel, thereby determining whether the glass panel needs to be flipped.

[0052] After scanning is completed, the first suction cup assembly picks up the glass panel from the barcode scanning assembly and moves it above the stress testing machine via the first linear module. The first suction cup assembly places the glass panel at the feeding position of the stress testing machine, and the stress testing machine performs stress testing on the glass panel.

[0053] After the test is completed, the second suction cup assembly picks up the glass panel and moves it above the second straight module through the first straight module. The second suction cup assembly docks with the third suction cup assembly to realize the transfer of the glass panel. The second straight module moves the glass panel directly below the laser engraving machine, and the laser engraving machine performs laser engraving on the surface of the glass panel.

[0054] After laser engraving is completed, the fifth suction cup assembly picks up the glass panel and distributes it to each of the feeding assemblies according to the test results. When the glass panel is scanned as a defective product by the positioning and scanning module, the glass panel flows directly to the first feeding assembly without undergoing stress testing and laser engraving. When the glass panel is tested as a defective product by the stress testing machine, the glass panel flows to the second feeding assembly without undergoing laser engraving. When the glass panel passes the stress testing machine test and laser engraving, the glass panel flows to the third feeding assembly.

Claims

1. A glass panel stress detection and laser engraving apparatus comprising a frame, characterized in that: The rack is sequentially provided with a positioning code scanning module (3), a detection laser etching module (4) and a stacking module (5) in the conveying direction; the detection laser etching module (4) comprises a first linear module (41), a second linear module (42), a laser etching machine (43) and a stress testing machine (44), the first linear module (41) and the second linear module (42) are arranged in parallel and are located on the two sides of the laser etching machine (43) respectively, the laser etching machine (43) and the stress testing machine (44) are located on the same side of the first linear module (41), the first linear module (41) is provided with a first suction disc assembly (21) and a second suction disc assembly (22) at the action end, and the second linear module (42) is provided with a third suction disc assembly (23) at the action end. After the glass panel is positioned and scanned by the positioning code scanning module (3), the first suction disc assembly (21) sucks the glass panel from the discharge end of the positioning code scanning module (3) and conveys the glass panel to the stress testing machine (44) for testing, the second suction disc assembly (22) transfers the tested glass panel to the third suction disc assembly (23) after the testing is completed, and finally the glass panel is input to the feeding end of the stacking module (5) after being laser etched by the laser etching machine (43). The positioning code scanning module (3) comprises a feeding assembly (32), a visual positioning assembly (33), a code scanning assembly (34) and a mechanical hand (31), the mechanical hand (31) is provided with a fourth suction disc assembly (24) at the action end, the mechanical hand (31) is arranged on one side of the visual positioning assembly (33) and the code scanning assembly (34), and the code scanning assembly (34) is arranged at the discharge end of the visual positioning assembly (33). The stacking module (5) comprises a third linear module (51) and a plurality of discharging assemblies (52), the third linear module (51) is arranged on one side of the plurality of discharging assemblies (52), the third linear module (51) is provided with a fifth suction disc assembly (25) at the action end, the fifth suction disc assembly (25) is in butt joint with the third suction disc assembly (23) and distributes the tested glass panel into the plurality of discharging assemblies (52). 2.The glass panel stress detection and laser engraving device of claim 1, wherein: The glass panel stress detection and laser etching equipment further comprises two groups of turnover modules (6), the two groups of turnover modules (6) are arranged on one side of the code scanning assembly (34) and the receiving end of the second linear module (42) respectively, the turnover module (6) comprises a first mounting frame (61), a servo motor (62) and a rotating shaft (63), the first mounting frame (61) is fixed on the rack, the servo motor (62) is arranged on the first mounting frame (61), one end of the rotating shaft (63) is in transmission connection with the output shaft of the servo motor (62), and the other end of the rotating shaft (63) is provided with a sixth suction disc assembly (26), the sixth suction disc assembly (26) is driven by the servo motor (62) to rotate by 180 degrees, so that the glass panel is turned over. 3.The glass panel stress detection and laser engraving device of claim 1, wherein: The upper feeding assembly (32) and the lower feeding assembly (52) each comprise an empty tray module (7), a full tray module (8) and a lifting platform (9), the empty tray module (7) of the upper feeding assembly (32) is located above the full tray module (8) of the upper feeding assembly (32), the empty tray module (7) of the lower feeding assembly (52) is located below the full tray module (8) of the lower feeding assembly (52), the empty tray module (7) and the full tray module (8) each comprise a first conveying line (71), a jacking assembly (72), four groups of material frames (73) and four groups of supporting assemblies (74), the jacking assembly (72) is arranged on the inner side of the first conveying line (71), four groups of the material frames (73) are symmetrically arranged on the outer side of the first conveying line (71), four groups of the supporting assemblies (74) are symmetrically arranged above the outer side of the first conveying line (71), four groups of the supporting assemblies (74) comprise a driving air cylinder (741), the driving end of the driving air cylinder (741) is connected with a supporting block (742), the supporting block (742) holds a tray on the material frame (73) through the driving of the driving air cylinder (741), the lifting platform (9) is provided with a second conveying line (91) at the driving end, the second conveying line (91) is connected with the first conveying line (71) through the driving of the lifting platform (9), so as to realize the transfer of the tray.

4. The glass panel stress detection and laser engraving apparatus of claim 1, wherein: The visual positioning assembly (33) comprises a second mounting frame (331), a light source (332), a lens (333) and an industrial camera (334), the second mounting frame (331) is fixed on the rack, the light source (332) is arranged at the top end of the second mounting frame (331), the industrial camera (334) is longitudinally arranged at the bottom end of the second mounting frame (331), the lens (333) is connected with the industrial camera (334), a through hole matched with a light transmission hole of the light source (332) is formed in the second mounting frame (331), and the lens (333) faces the light transmission hole through the through hole.

5. The glass panel stress detection and laser engraving apparatus of claim 1, wherein: The code scanning assembly (34) comprises a third mounting frame (341), a fourth linear module (342), a sliding table air cylinder (343) and a code scanning gun (344), the third mounting frame (341) is fixed on the rack, a seventh suction disc assembly (27) is arranged at the top end of the third mounting frame (341), the fourth linear module (342) is arranged on one side of the third mounting frame (341), the sliding table air cylinder (343) is longitudinally arranged at the driving end of the fourth linear module (342), and the code scanning gun (344) is longitudinally arranged at the driving end of the sliding table air cylinder (343). The code scanning gun (344) scans the two-dimensional code on the glass panel through the driving of the fourth linear module (342).

6. The glass panel stress detection and laser engraving apparatus of claim 1, wherein: The glass panel stress detection and laser engraving equipment further comprises two groups of material preparation assemblies (10), the two groups of material preparation assemblies (10) are arranged between the feeding assembly (32) and the visual positioning assembly (33) on one side of the stress testing machine (44), and each of the two groups of material preparation assemblies (10) comprises a fourth mounting frame (11) fixed on the rack and provided with an eighth suction disc assembly (28) at the top end.

7. The glass panel stress detection and laser engraving apparatus of claim 3, wherein: The support assembly (74) of the empty tray module (7) further comprises four groups of protrusions (12) which are symmetrically arranged above the outer side of the first conveying line (71) and rotate, when the protrusions (12) are in the horizontal plane, the support of the tray is realized, and when the protrusions (12) are rotated upward by 90 degrees, the tray is lifted to make room.

8. The glass panel stress detection and laser engraving apparatus of claim 3, wherein: The full tray module (8) further comprises a lifting cylinder (81) which is longitudinally arranged at the discharging end of the first conveying line (71), and the action end of the lifting cylinder (81) is provided with a stop block (82), and the stop block (82) is discharged by the driving of the lifting cylinder (81).

9. The glass panel stress detection and laser engraving apparatus of claim 1, wherein: The number of the discharging assemblies (52) is three, the three discharging assemblies (52) are arranged side by side on one side of the third linear module (51), and the three discharging assemblies (52) respectively recover good products, code scanning unqualified products and stress testing unqualified products; the number of the stress testing machines (44) is two, two driving modules (13) are arranged on the rack, and the two stress testing machines (44) are respectively arranged on the action ends of the two driving modules (13), so that the alternating feeding and discharging are realized.

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