Raw AG glass sheet surface quality closed-loop detection system based on tinning mechanism

Abstract

The invention discloses an AG glass sheet surface quality closed-loop detection system based on a tinning mechanism, and relates to the technical field of glass detection. According to the invention, ultraviolet excitation, reflector multi-path irradiation, automatic focusing imaging and multi-point detection devices are integrated, and the content of the upper surface and the thickness of a tin oxide () layer on the lower surface of an AG glass original sheet can be respectively detected. Through comparison of time-sharing irradiation of the upper surface and the lower surface and fluorescence intensity, synchronous and quantitative detection of internal tin infiltration and the surface oxidation state of the glass is realized, and the surface quality risk is accurately reflected. And a sliding cross beam and rubber roller moving structure, planetary fluted disc linkage and electromagnetic braking are adopted, so that full-sheet multi-point detection and high stability of equipment operation are ensured.

Description

Technical Field

[0001] This invention relates to the field of glass testing technology, specifically to a closed-loop testing system for the surface quality of AG glass substrates based on the tin diffusion mechanism. Background Technology

[0002] Currently, surface quality inspection of AG (anti-glare) glass substrates mainly relies on manual visual inspection, optical reflectivity measurement, or simple judgment of surface electrical properties. Manual visual inspection is limited by subjective experience, making it difficult to detect microscopic defects invisible to the naked eye, and is also inefficient. Existing optical inspection methods typically only focus on visible defects on the glass surface, such as scratches, bubbles, and particles, and do not address internal defects caused by the tin diffusion mechanism. , Deep-seated physicochemical defects, such as abnormal distribution, are almost impossible to identify. Indirect detection methods, such as electrical or surface energy analysis, are limited by multiple interferences, including glass thickness, impurity distribution, ambient temperature, and equipment calibration, making it difficult to guarantee sensitivity and accuracy. More importantly, there is currently no mature method for rapid, non-destructive, and quantitative analysis of the thickness of the tin oxide layer on the lower surface of the glass and its internal trace elements. This means that deep-seated quality problems such as surface tin penetration and abnormal oxide layers often only surface during subsequent heat treatment, film application, or tempering processes, resulting in severe product scrapping and economic losses. Therefore, developing a method that can directly, accurately, and comprehensively detect the internal structure of AG glass sheets is crucial. A detection system for the content and state of the surface tin oxide layer. Summary of the Invention

[0003] To overcome the shortcomings of the prior art, the present invention provides the following technical solution: a closed-loop detection system for the surface quality of AG glass substrates based on the tin infiltration mechanism, comprising a sliding beam track, a sliding frame slidably mounted on the sliding beam track, a detector cylinder and an ultraviolet emitter bracket fixedly mounted on the sliding frame, wherein an ultraviolet emitter is fixedly mounted on the ultraviolet emitter bracket; further comprising a base disposed below the ultraviolet emitter, an adjusting electric cylinder fixing plate slidably mounted on the base, four adjusting electric cylinders fixedly mounted on the adjusting electric cylinder fixing plate, the four adjusting electric cylinders being arranged in a rectangular array at equal intervals, and the ends of the telescopic rods of the four adjusting electric cylinders being connected to the placement stage via ball joints. The lower surface of the device is movable, and the placement stage is used to place the AG glass sheet to be tested. It also includes a first reflector, a second reflector, and a third reflector fixedly installed on the reflector bracket. The first reflector is used to reflect the light emitted by the ultraviolet emitter onto the second reflector. The second reflector reflects the light reflected by the first reflector onto the third reflector. The third reflector is used to reflect the light reflected by the second reflector onto the lower surface of the AG glass sheet to be tested. An intermediate reflector is provided between the ultraviolet emitter and the first reflector. The intermediate reflector is used to reflect the light emitted by the ultraviolet emitter onto the upper surface of the AG glass sheet to be tested.

[0004] Preferably, a light-shielding shell is attached to the base, and doors and windows are provided on the side of the light-shielding shell. The reflector bracket and the sliding crossbeam track are fixedly installed on the inner wall of the light-shielding shell. The middle reflector is movably installed on the middle reflector bracket, and the middle reflector bracket is fixedly installed on the sliding crossbeam track. The upper surface of the placement platform is provided with threaded holes, and a glass plate placement frame that is easy to disassemble is fixedly installed through the threaded holes. The inner shape of the glass plate placement frame is adapted to the AG glass sheet to be tested.

[0005] Preferably, a shifting electric cylinder is also movably installed on the sliding crossbeam track. The end of the telescopic cylinder of the shifting electric cylinder is movably connected to the sliding crossbeam track, and the end of the telescopic rod of the shifting electric cylinder is movably connected to the intermediate reflector. The shifting electric cylinder drives the intermediate reflector to swing on the intermediate reflector support.

[0006] Preferably, an outer lens is fixedly installed at the bottom of the inner wall of the detection tube, a focusing lens frame is slidably installed in the middle of the inner wall of the detection tube, a focusing lens is fixedly installed inside the focusing lens frame, and the focusing lens frame is also slidably installed on two parallel guide rods. A top plate is fixedly installed at the top of the detection tube, and a fluorescence detector is fixedly embedded in the middle of the top plate. The fluorescence detector is used to receive light from below the detection tube. A focusing motor is also fixedly embedded in the top plate, and a lead screw that is threadedly driven with the focusing lens frame is fixedly installed on the output shaft of the focusing motor.

[0007] Preferably, a heat sink that is fitted to the fluorescence detector is fixedly installed on the upper surface of the top plate. Thermal grease is applied to the contact surface between the heat sink and the fluorescence detector. A heat-dissipating fan bracket plate is fixedly installed on the heat sink. A cooling fan is rotatably installed in the middle of the heat-dissipating fan bracket plate. The cooling fan is located on the axial position inside the heat sink and is used to drive the airflow near the heat sink.

[0008] Preferably, a planetary gear disk bracket and a gear ring bracket are fixedly mounted on the heat-dissipating fan bracket plate. A planetary gear disk is rotatably mounted on the planetary gear disk bracket, and a gear ring is rotatably mounted on the inner side of the gear ring bracket. Three planetary gears are equidistantly arranged in a circular array on the upper surface of the planetary gear disk. All planetary gears are rotatably mounted on the planetary gear disk. A central gear is set at the center of the circular array of three planetary gears, which meshes with all three planetary gears. The gear ring meshes with all three planetary gears.

[0009] Preferably, a rubber roller that rubs against and rolls with the sliding crossbeam track is rotatably mounted on the heat fan bracket plate. A drive gear is coaxially fixed on the upper surface of the rubber roller, and the drive gear meshes with the planetary gear disk for transmission. A cooling motor is fixedly mounted on the sliding frame. The output shaft of the cooling motor is fixedly engaged with the cooling fan, and the output shaft of the cooling motor is also fixedly engaged with the central gear.

[0010] Preferably, an electromagnet sliding groove is provided in the radial direction of the toothed ring bracket, an electromagnet is slidably installed in the electromagnet sliding groove, the electromagnet slides in contact with the circumferential surface of the toothed ring, and there is magnetic contact between the toothed ring and the electromagnet (there is friction between the electromagnet and the toothed ring).

[0011] Compared with the prior art, the present invention has the following beneficial effects: (1) The present invention utilizes ultraviolet light to excite divalent tin ions in glass ( By understanding the mechanism of characteristic fluorescence generation and combining it with a sophisticated fluorescence imaging detection module, the fluorescence of the AG glass substrate was observed. Direct and quantitative detection of distribution and content. Compared with traditional detection methods that rely on appearance or surface electrical properties, this system can provide early warning of potential surface quality risks such as refractive index drift, rainbow spots, and defects in subsequent heat treatment caused by tin diffusion, thereby improving the quality controllability of high-end AG glass substrates; (2) By designing a dual-path (time-division irradiation of upper and lower surfaces), the system can compare the excitation brightness difference between the lower and upper surfaces at the same location, and then calculate the tin oxide content of the lower surface. The thickness of the oxide layer, the data obtained by this method has high repeatability. Its detection of abnormal thickness of the surface oxide layer helps to adjust the float cold end or subsequent processing technology in a timely manner, and prevents the uneven oxide layer on the surface from causing appearance defects such as rainbow spots and ripples; (3) The present invention realizes full-sheet scanning and multi-angle detection of AG glass sheets of different sizes and shapes by using planetary gear linkage rubber rollers and adjusting electric cylinder structure. Multi-point detection ensures the comprehensiveness of quality control and can quickly detect local abnormal areas; (4) The present invention ensures the accuracy of detection data by comparing the upper and lower surface irradiation and cross-validating the dual data. This closed-loop design improves the industrial applicability of the equipment and greatly reduces the risk of human misjudgment or untimely maintenance. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the light-shielding shell structure of the present invention.

[0013] Figure 2 This is a schematic diagram of the internal structure of the light-shielding shell of the present invention.

[0014] Figure 3 This is a structural layout diagram of the reflector of the present invention.

[0015] Figure 4 This is a schematic diagram of the glass plate placement frame structure of the present invention.

[0016] Figure 5 This is a schematic diagram of the sliding frame structure of the present invention.

[0017] Figure 6 For the present invention Figure 5 Schematic diagram of the structure at point A in the middle.

[0018] Figure 7 This is a schematic diagram of the structure of the planetary gear disk support of the present invention.

[0019] Figure 8 This is a schematic diagram of the structure of the heat sink in this invention.

[0020] Figure 9 This is a schematic diagram of the internal structure of the detection tube of the present invention.

[0021] In the diagram: 101-Base; 102-Light-shielding shell; 103-Door / window; 104-Reflector bracket; 105-First reflector; 106-Second reflector; 107-Third reflector; 108-Adjusting cylinder; 109-Adjusting cylinder fixing plate; 110-Placement platform; 111-Glass plate placement frame; 112-Electromagnet; 113-Sliding crossbeam track; 114-Positioning cylinder; 115-Intermediate reflector bracket; 116-Intermediate reflector; 117-Ultraviolet emitter; 118-Sliding frame; 119-Detector tube; 120-Ultraviolet emitter 121-Cooling motor; 122-Outer lens; 123-Focusing lens; 124-Focusing lens frame; 125-Guide slide bar; 126-Lead screw; 127-Focusing motor; 128-Fluorescence detector; 129-Top plate; 130-Heat sink; 131-Cooling fan; 132-Cooling fan bracket plate; 133-Rubber roller; 134-Drive gear; 135-Gear ring; 136-Planetary gear; 137-Center gear; 138-Planetary gear disk; 139-Planetary gear disk bracket; 140-Electromagnetic sliding groove; 141-Gear ring bracket. Detailed Implementation

[0022] The following is in conjunction with the appendix Figures 1-9 The technical solution of the present invention will be further illustrated through specific embodiments.

[0023] This invention provides a closed-loop detection system for the surface quality of AG glass substrates based on the tin infiltration mechanism. It includes a sliding beam track 113, a sliding frame 118 slidably mounted on the sliding beam track 113, a detector cylinder 119 and an ultraviolet emitter bracket 120 fixedly mounted on the sliding frame 118, wherein an ultraviolet emitter 117 is fixedly mounted on the ultraviolet emitter bracket 120; it also includes a base 101 located below the ultraviolet emitter 117, an adjusting cylinder fixing plate 109 slidably mounted on the base 101, and four adjusting cylinders 108 fixedly mounted on the adjusting cylinder fixing plate 109. The four adjusting cylinders 108 are arranged in a rectangular array at equal intervals. The ends of the telescopic rods of the four adjusting cylinders 108 are movably engaged with the lower surface of the placement stage 110 via ball joints. The table 110 is used to place the AG glass sheet to be tested; it also includes a first reflector 105, a second reflector 106, and a third reflector 107 fixedly mounted on the reflector bracket 104. The first reflector 105 is used to reflect the light emitted by the ultraviolet emitter 117 onto the second reflector 106, the second reflector 106 reflects the light reflected by the first reflector 105 onto the third reflector 107, and the third reflector 107 is used to reflect the light reflected by the second reflector 106 onto the lower surface of the AG glass sheet to be tested. An intermediate reflector 116 is provided between the ultraviolet emitter 117 and the first reflector 105, and the intermediate reflector 116 is used to reflect the light emitted by the ultraviolet emitter 117 onto the upper surface of the AG glass sheet to be tested. A light-shielding shell 102 is fastened to the base 101. The side of the light-shielding shell 102 is equipped with a door and window 103. The reflector bracket 104 and the sliding crossbeam track 113 are fixedly installed on the inner wall of the light-shielding shell 102. The middle reflector 116 is movably installed on the middle reflector bracket 115, and the middle reflector bracket 115 is fixedly installed on the sliding crossbeam track 113. The upper surface of the placement platform 110 is provided with a threaded hole, and a glass plate placement frame 111 that is easy to disassemble is fixedly installed through the threaded hole. The inner shape of the glass plate placement frame 111 is adapted to the AG glass sheet to be tested. A shifting electric cylinder 114 is also movably installed on the sliding crossbeam track 113. The end of the telescopic cylinder of the shifting electric cylinder 114 is movably connected to the sliding crossbeam track 113, and the end of the telescopic rod of the shifting electric cylinder 114 is movably connected to the intermediate reflector 116. The shifting electric cylinder 114 drives the intermediate reflector 116 to swing on the intermediate reflector bracket 115.

[0024] An outer lens 122 is fixedly installed at the bottom of the inner wall of the detection tube 119. A focusing lens frame 124 is slidably installed in the middle of the inner wall of the detection tube 119. A focusing lens 123 is fixedly installed inside the focusing lens frame 124. The focusing lens frame 124 is also slidably installed on two parallel guide rods 125. A top plate 129 is fixedly installed at the top of the detection tube 119. A fluorescence detector 128 is fixedly embedded in the middle of the top plate 129. The fluorescence detector 128 is used to receive light from below the detection tube 119. A focusing motor 127 is also fixedly embedded on the top plate 129. A lead screw 126 that is threadedly driven with the focusing lens frame 124 is fixedly installed on the output shaft of the focusing motor 127. A heat sink 130 is fixedly installed on the upper surface of the top plate 129 and is attached to the fluorescence detector 128. Thermal grease is applied to the contact surface between the heat sink 130 and the fluorescence detector 128. A heat dissipation fan bracket plate 132 is fixedly installed on the heat sink 130. A cooling fan 131 is rotatably installed in the middle of the heat dissipation fan bracket plate 132. The cooling fan 131 is located on the axial position inside the heat sink 130 and is used to drive the airflow near the heat sink 130. A planetary gear support 139 and a gear ring support 141 are fixedly mounted on the heat-dissipating fan support plate 132. A planetary gear 138 is rotatably mounted on the planetary gear support 139. A gear ring 135 is rotatably mounted on the inner side of the gear ring support 141. Three planetary gears 136 are arranged in a circular array at equal intervals on the upper surface of the planetary gear 138. All planetary gears 136 are rotatably mounted on the planetary gear 138. A central gear 137 is set at the center of the circular array of the three planetary gears 136, which meshes with all three planetary gears 136. The gear ring 135 meshes with all three planetary gears 136. A rubber roller 133 is rotatably mounted on the fan support plate 132, which frictionally rolls with the sliding crossbeam track 113. A drive gear 134 is coaxially fixed on the upper surface of the rubber roller 133, and the drive gear 134 meshes with the planetary gear disk 138 for transmission. A cooling motor 121 is fixedly mounted on the sliding frame 118. The output shaft of the cooling motor 121 is fixedly engaged with the cooling fan 131, and the output shaft of the cooling motor 121 is also fixedly engaged with the central gear 137. An electromagnet sliding groove 140 is opened in the radial direction of the gear ring support 141. An electromagnet 112 is slidably mounted in the electromagnet sliding groove 140. The electromagnet 112 slides with the circumferential surface of the gear ring 135, and there is a magnetic engagement between the gear ring 135 and the electromagnet 112 (there is friction between the electromagnet 112 and the gear ring 135).

[0025] The working principle of the closed-loop detection system for the surface quality of AG glass sheet based on the tin diffusion mechanism disclosed in this invention is as follows: Open the door and window 103, place the AG glass sheet to be tested on the glass plate placement frame 111 (change the glass plate placement frame 111 of different shapes according to the shape of the AG glass sheet to be tested), and then close the door and window 103. When the ultraviolet emitter 117 is activated, it emits light that shines onto the intermediate reflector 116 (at this time, the position of the intermediate reflector 116 blocks the light between the ultraviolet emitter 117 and the first reflector 105, preventing the first reflector 105 from receiving light). The intermediate reflector 116 reflects the light from the ultraviolet emitter 117 onto the upper surface of the AG glass sheet, and the projection point on the upper surface of the AG glass sheet is directly below the detector tube 119. At this time, the light emitted by the ultraviolet emitter 117 (wavelength 270–290nm) inevitably undergoes tin penetration due to the contact between the lower surface of the glass and the molten tin in the float glass process. The tin that penetrates into the glass surface is usually divalent tin ( It exists under a reducing protective atmosphere, but when exposed to an oxidizing environment during subsequent processing, It will be transformed into (The formation of tin oxide) severely affects the surface quality of glass, especially for ultra-thin substrate glass used in touch displays, anti-glare (AG) applications, etc., where extremely low tin penetration is required to avoid defects such as rainbows during subsequent tempering. The light emitted by the ultraviolet emitter 117 will then penetrate into the interior of the AG glass sheet, affecting the interior of the AG glass sheet. It will emit fluorescence ( No), at this time, since the irradiation point is directly below the detector tube 119, the fluorescence emitted (visible blue region wavelength 380–520nm, generally around 410nm fluorescence; stimulated) The emitted photons pass through the outer lens 122 and the focusing lens 123, finally focusing onto the fluorescence detector 128. The fluorescence detector 128 is used for imaging (equipped with a replaceable narrowband filter that only allows fluorescence of approximately 410nm to pass through, blocking all other wavelengths). The fluorescence detector 128 determines the density, number, and brightness of the fluorescence spots in the AG glass substrate, thereby reflecting the fluorescence intensity of the AG glass substrate. content.

[0026] The control cylinder 114, with its extension rod, causes the intermediate reflector 116 to swing, preventing it from blocking the light from the ultraviolet emitter 117. At this point, the first reflector 105 is illuminated by the ultraviolet light from the emitter 117. The light is then reflected by the second reflector 106 and the third reflector 107. The third reflector 107, located directly below the detector tube 119, projects the light from the ultraviolet emitter 117 onto the lower surface of the AG glass substrate (the oxide layer, the side in contact with the molten tin). This tin oxide layer blocks the light, preventing it from passing through. Energy decays over time, less Excitation causes a decrease in the total brightness of the fluorescence. Based on the change in brightness before and after (at the same location), the thickness of the tin oxide layer on the lower surface of the AG glass substrate can be determined (the refraction and light propagation attenuation of the first reflector 105, second reflector 106, and third reflector 107 are constant errors). This can be achieved by directly measuring the tin oxide layer on the AG glass substrate. By combining the content of tin oxide and the thickness of the tin oxide layer on the lower surface of the AG glass sheet (the data are cross-checked; if the two sets of test data deviate from each other, it indicates a equipment malfunction), the quality of the AG glass sheet can be comprehensively judged, avoiding quality risks such as rainbow spots, ripples, or refractive index drift. It should be noted that once surface formation... It significantly slows down oxidation, but does not completely stop it internally. The subsequent oxidation rate is controlled by multiple factors including temperature, oxygen partial pressure, glass viscosity, and defect channels. While it typically drops rapidly to a negligible level at the cold end of the float glass process, it is reactivated in subsequent high-temperature processes, thus requiring the lowest possible oxidation rate. The content of.

[0027] By controlling the irradiation position of the ultraviolet emitter 117 on the AG glass substrate, a more comprehensive detection of the internal structure of the AG glass substrate can be achieved. The content distribution is as follows. Specifically, during the operation of the fluorescence detector 128, in order to ensure detection accuracy, the fluorescence detector 128 needs to be cooled to reduce thermal noise. Therefore, the cooling motor 121 needs to be started. The output shaft of the cooling motor 121 will drive the central gear 137 and the cooling fan 131 to rotate together. The rotation of the cooling fan 131 will drive the surrounding airflow, thereby causing air to convect with the heat sink 130, thus cooling the heat sink 130. The heat of the heat sink 130 is absorbed from the fluorescence detector 128, thus cooling the fluorescence detector 128. It should be noted that the cooling fan 131 can drive airflow in any direction. The difference is in the direction, but ultimately it will cool the heat sink 130. When it is necessary to control the irradiation position of the ultraviolet emitter 117 on the AG glass substrate, the rotation direction of the output shaft of the cooling motor 121 is controlled, and the electromagnet 112 is activated. The rotation direction of the output shaft of the cooling motor 121 controls the direction in which the ultraviolet emitter 117 on the detector tube 119 and ultraviolet emitter bracket 120 moves along the cooling fan 131. The rotation speed of the cooling motor 121 controls the moving speed (generally a constant speed, without adjustment of the motor's rotation speed). The electromagnet 112 is activated... Electromagnet 112 generates a magnetic force to attract the gear ring 135, causing friction between the electromagnet 112 and the gear ring 135. This friction restricts the rotation of the gear ring 135 on the gear ring support 141. (Initially, when the electromagnet 112 is not activated, the gear ring 135 can rotate within the gear ring support 141. Therefore, the rotation of the central gear 137 will drive the planetary gear 136 to revolve. This is because the planetary gear 136 is rotatably mounted on the planetary gear disk 138, which is connected to the rubber roller 133 via the drive gear 134.) When connected to a load, meaning the rubber roller 133 needs to overcome more resistance to rotate, the power is released from the gear ring 135, and the rubber roller 133 stops rotating. When the gear ring 135 cannot rotate, the power is transmitted to the rubber roller 133. Specifically, the central gear 137 drives the planetary gear 136 to rotate on its own axis and revolve around the sun. The planetary gear 136's revolution drives the planetary gear disk 138 to rotate, which in turn drives the drive gear 134 to rotate, which in turn drives the rubber roller 133 to rotate. The rotation of the rubber roller 133 causes it to roll on the sliding beam track 113, thereby changing the position of the sliding frame 118 on the sliding beam track 113, and thus changing the relative positions of the ultraviolet emitter 117, the detector tube 119, and the AG glass sheet. More irradiation positions can be obtained by controlling the placement of the adjusting electric cylinder fixing plate 109 on the base 101 (manual sliding adjustment). The placement angle of the AG glass sheet is controlled by adjusting the four adjusting electric cylinders 108, used for leveling and adapting to AG glass sheets with different surface shapes.Then, control the focusing motor 127. The output shaft of the focusing motor 127 drives the lead screw 126 to rotate. The lead screw 126 drives the focusing lens 123 on the focusing lens frame 124 to move along the axis. At this time, the distance between the focusing lens 123 and the outer lens 122 can be adjusted so that the focus is concentrated on the fluorescence detector 128 to adapt to different AG glass substrates.

Claims

1. A closed-loop detection system for surface quality of AG glass substrates based on tin infiltration mechanism, characterized in that: The utility model relates to a kind of AG glass original piece detection device, including sliding crossbeam track (113), sliding bracket (118) is slidably installed on sliding crossbeam track (113), and detection cylinder (119) and ultraviolet emitter support (120) are fixedly installed on sliding bracket (118), wherein ultraviolet emitter support (120) is fixedly installed with ultraviolet emitter (117) on it; It also includes a base (101) disposed below the ultraviolet emitter (117), an adjustment cylinder fixing plate (109) slidably mounted on the base (101), four adjustment cylinders (108) fixedly installed on the adjustment cylinder fixing plate (109), the four adjustment cylinders (108) are equidistantly arranged in a rectangular array, the extension rod end of each of the four adjustment cylinders (108) is movably connected to the lower surface of a placement platform (110) through a ball joint, and the placement platform (110) is used to place the AG glass original piece to be detected; It also includes a first reflector plate (105), a second reflector plate (106) and a third reflector plate (107) fixedly installed on the reflector plate support (104), wherein the first reflector plate (105) is used to reflect the light emitted by the ultraviolet emitter (117) onto the second reflector plate (106), the second reflector plate (106) reflects the light reflected by the first reflector plate (105) onto the third reflector plate (107), and the third reflector plate (107) is used to reflect the light reflected by the second reflector plate (106) onto the lower surface of the AG glass original piece to be detected; The intermediate reflector plate (116) is disposed between the ultraviolet emitter (117) and the first reflector plate (105), and the intermediate reflector plate (116) is used to reflect the light emitted by the ultraviolet emitter (117) onto the upper surface of the AG glass original piece to be detected. 2.The AG glass substrate surface quality closed-loop detection system based on tin infiltration mechanism according to claim 1, characterized in that: The base (101) is provided with a light shielding shell (102), the side of the light shielding shell (102) is provided with a door and window (103), wherein the reflector plate support (104) and the sliding crossbeam track (113) are fixedly installed on the inner wall of the light shielding shell (102); the intermediate reflector plate (116) is movably installed on the intermediate reflector plate support (115), and the intermediate reflector plate support (115) is fixedly installed on the sliding crossbeam track (113); the upper surface of the placement platform (110) is provided with a threaded hole, and a detachable glass plate placement frame (111) is fixedly installed in the threaded hole by screwing; the inner side of the glass plate placement frame (111) is adapted to the shape of the AG glass original piece to be detected. 3.The AG glass substrate surface quality closed-loop detection system based on tin infiltration mechanism according to claim 2, characterized in that: The sliding crossbeam track (113) is also movably provided with a transposition cylinder (114), the extension cylinder end of the transposition cylinder (114) is movably connected to the sliding crossbeam track (113), and the extension rod end of the transposition cylinder (114) is movably connected to the intermediate reflector plate (116), so that the intermediate reflector plate (116) is swung on the intermediate reflector plate support (115) by the transposition cylinder (114). 4.The AG glass substrate surface quality closed-loop detection system based on tin infiltration mechanism according to claim 3, characterized in that: The bottom end of the inner wall of the detection cylinder (119) is fixedly installed with an outer lens (122), the middle part of the inner wall of the detection cylinder (119) is slidably installed with a focusing lens frame (124), the inner side of the focusing lens frame (124) is fixedly installed with a focusing lens (123), wherein the focusing lens frame (124) is also slidably installed on two parallel guide sliding rods (125), the top end of the detection cylinder (119) is fixedly installed with a top plate (129), the middle part of the top plate (129) is fixedly embedded with a fluorescence detector (128), the fluorescence detector (128) is used for receiving light below the detection cylinder (119), the top plate (129) is also fixedly embedded with a focusing motor (127), the output shaft of the focusing motor (127) is fixedly installed with a lead screw (126) which is in threaded transmission cooperation with the focusing lens frame (124). 5.The AG glass substrate surface quality closed-loop detection system based on tin infiltration mechanism according to claim 4, characterized in that: The upper surface of the top plate (129) is fixedly installed with a heat sink (130) which is attached to the fluorescence detector (128), the contact surface of the heat sink (130) and the fluorescence detector (128) is provided with heat-conducting silicone grease, the heat sink (130) is fixedly installed with a fan bracket plate (132), the middle part of the fan bracket plate (132) is rotatably installed with a cooling fan (131), the axis position of the cooling fan (131) is located inside the heat sink (130), which is used to drive the air flow near the heat sink (130).

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