Measuring device and method for measuring low-e coated glass

Abstract

The application relates to the technical field of glass detection, in particular to a low-transmittance coated glass measuring device and a use method thereof. The device comprises a base and a light transmittance detector arranged in the middle of the base, and supports are fixedly arranged on the two sides of the base. The side of the support is provided with an outer frame with a U-shaped structure, and an inner frame with a U-shaped structure is slidably arranged in the outer frame. The low-transmittance coated glass measuring device and the use method thereof adopt a combined fixing structure of an electric cylinder driving preliminary clamping and a gas pump gas injection air bag expansion. The air bag can automatically spread and wrap along the side edge of the glass. On the one hand, the device can avoid the scratch damage of a traditional rigid clamp to the film layer of the low-transmittance coated glass, and can adapt to the fixing requirements of different sizes of glass. On the other hand, the device can realize the “suspension” positioning through the slight contact between the air bag and the side edge of the glass in the initial stage, prevent the glass from sliding when being placed, ensure that the glass is always in the detection reference position, and provide a precise and stable basis for the subsequent attitude adjustment and light transmittance detection.

Description

Technical Field

[0001] This invention relates to the field of glass testing technology, specifically to a measuring device and method for using low-transparency coated glass. Background Technology

[0002] In the production and quality inspection process of low-transmittance coated glass, light transmittance is one of the core testing indicators, and the glass fixation and coating identification before testing are key steps affecting the testing accuracy. Existing low-transmittance coated glass measuring equipment has the following problems:

[0003] Inappropriate fixing methods: Rigid clamps are often used to directly hold the glass edge, which can easily cause scratches and damage to the glass coating layer. They are also not suitable for glass of different thicknesses and sizes. After fixing, the glass is prone to shaking, which affects the stability of the light transmittance test data. Although some equipment uses flexible fixing, the fixing force is difficult to control. It is easy to cause the glass to shift due to loose fixing or deform due to excessively tight fixing.

[0004] Coating surface identification relies on manual labor: The appearance difference between the coated surface (low friction surface) and the uncoated surface (high friction surface) of low-transparency coated glass is small. Existing equipment requires manual observation, judgment and glass flipping to adjust the orientation, which not only increases the cost of manual operation, but also easily leads to incorrect detection direction due to human judgment errors, reducing detection efficiency and accuracy; in addition, the glass surface is easily touched during manual flipping, which may introduce impurities or cause secondary damage.

[0005] Poor continuity of the testing process: Glass fixing, film adjustment, and transmittance testing are mostly independent operation steps, requiring manual transfer of glass or adjustment of equipment status between different workstations. There are many process breaks, resulting in low overall testing efficiency and difficulty in meeting the rapid testing needs of mass production.

[0006] In view of this, we propose a measuring device and method for low-transparency coated glass. Summary of the Invention

[0007] The purpose of this invention is to provide a measuring device and method for low-transparency coated glass, to solve the problems mentioned in the background art, such as unstable glass fixation that easily damages the coating, low efficiency due to reliance on manual identification of the coating surface, and discontinuous detection process. To achieve the above objective, this invention provides the following technical solution: a measuring device for low-transparency coated glass, comprising a base and a transmittance detector disposed in the center, with supports fixedly disposed on both sides of the base. The supports have a U-shaped outer frame on their sides, and a U-shaped inner frame is slidably disposed within the outer frame.

[0008] An airbag is provided on the inner side of the inner frame;

[0009] The outer frame is provided with an electric cylinder for pushing the inner frame to slide and make the air bag wrap and fix the glass, and the outer frame is provided with an air pump connected with the air bag through a hose.

[0010] Preferably, the inner frame is provided with a L-shaped flap on each of the opposite sides, and when the inner frame drives the air bag to press the glass, the glass pushes the flap to flip, and the gap between the glass and the outer opening of the flap is the outlet of the air bag.

[0011] The middle part of the bracket is provided with a sliding groove, and the sliding groove is provided with a sliding seat with an open top, and the bottom of the sliding groove is provided with a reset spring for pushing the sliding seat to move upward.

[0012] The inner top wall of the sliding groove is provided with a plug for locking the rotating shaft along the thread.

[0013] Preferably, the inner frame is provided with a sliding rail inside, and the sliding rail is provided with a balance block sliding thereon, and the balance block is provided with two inclined grooves symmetrically, and the sliding rail is provided with two sliding blocks for pushing the balance block to displace along the corresponding inclined grooves.

[0014] The air bag is provided with a cable on each side, and the cable is connected with the sliding block, and when the air bag is extruded from the outlet, the cable and the sliding block push the balance block to displace.

[0015] Preferably, the air bag is uniformly provided with a plurality of flexible protrusions, and the material of the flexible protrusions is silica gel, and the flexible protrusions are combined with the surface of the glass when the air bag is inflated.

[0016] Preferably, the output end of the air pump is provided with a pressure sensor, and the air pump is electrically connected with the pressure sensor.

[0017] Preferably, the piston rod end of the electric cylinder and the inner frame are provided with a pressure sensor, and the pressure sensor is electrically connected with the electric cylinder.

[0018] Preferably, the sliding contact surfaces of the outer frame and the inner frame are coated with a solid lubricant to reduce the friction loss when the inner frame slides.

[0019] A method for using a measuring device for low-transmittance coated glass, comprising the following steps:

[0020] S1, vertically place the low-transmittance coated glass between the two inner frames, start the electric cylinder to push the inner frame to move along the outer frame towards the glass until the two air bags slightly contact the side edges of the glass, achieve the initial "holding" positioning of the glass to prevent the glass from sliding, turn on the air pump, slowly inject air into the air bag through the hose, and the air bag spreads along the side edge of the glass to wrap and ensure that the glass is stably fixed between the inner frames without shaking.

[0021] S2, with the air bag wrapping the glass, the outer frame bears the increasing weight, pushes the sliding seat to move down along the sliding groove to compress the reset spring, the bolt is disengaged from the shaft thread to release the lock, at the same time, the glass side edge extrudes the L-shaped flap inside the inner frame, so that the flap is turned around the rotating shaft to form an air bag extrusion outlet, the air pump supplies air to the air bag, and the air bag spreads to the glass surface through the extrusion outlet, because the glass has a film surface (low friction surface) and a non-film surface (high friction surface) with different friction coefficients, the air bag extrusion speed of the low friction surface is faster and the adhesion amount is more, resulting in weight imbalance of the glass on both sides, and the weight difference drives the outer frame to rotate around the rotating shaft, so that the glass is gradually turned from vertical to horizontal, and finally the low friction surface faces downward.

[0022] S3, before the air bag is inflated, the cables on both sides of the air bag are connected with the sliding blocks on the sliding rail, and the air bag with more adhesion amount on the low friction surface side pulls the sliding block on the same side to slide along the sliding rail, the sliding block pushes the balance block to move to the high friction surface side through the inclined groove, and the weight on the high friction surface side is increased, at this time, during the process that the glass is gradually turned from vertical to horizontal, the high friction surface faces downward.

[0023] S4, the light transmittance detector is started, the upper light source of the device emits detection light, the light transmittance detector in the middle of the base receives the light after penetrating through the horizontally placed glass, the detector automatically records and analyzes the light transmittance data, generates a detection report, and completes single glass light transmittance detection.

[0024] Compared with the prior art, the beneficial effects of the present application are:

[0025] In the present application, the combination fixing structure of "electric cylinder driven preliminary clamping + air pump inflation air bag expansion" is adopted, the air bag can self-adaptively spread and wrap along the glass side edge, on the one hand, the damage of traditional rigid clamps to the film layer of low-transmittance coated glass can be avoided, and the fixing demand of different sizes of glass can be met, on the other hand, the air bag and the glass side edge are slightly contacted to realize "suspension" positioning in the initial stage, so that the glass is prevented from sliding when placed, the glass is ensured to be always in a detection reference position, and a precise and stable basis is provided for subsequent attitude adjustment and light transmittance detection.

[0026] In the present application, the friction coefficient difference between the film surface (low friction surface) and the non-film surface (high friction surface) of the glass is utilized, so that when the air bag spreads to the glass surface through the extrusion outlet formed by the flap, the air bag extrusion speed of the low friction surface is faster and the adhesion amount is more, and then the weight imbalance drives the outer frame to rotate, the automatic attitude conversion of the glass from vertical to horizontal is realized, and the low friction surface automatically faces downward, so that manual observation, judgment or glass turning is not needed in the whole process, the film surface identification operation is greatly simplified, and the detection automation degree is improved.

[0027] In the application, the air bag cable is connected with the slide rail slider in advance, and in the air bag spreading process, more air bag adhesion on the low friction surface side will pull the slider on the same side, the slider pushes the balance block along the inclined groove to the high friction surface side, adjusts the weight distribution on both sides, and makes the high friction surface automatically downward when the glass is placed horizontally. The design can automatically switch the film surface downward state according to the different needs of the light transmittance detection of the glass orientation, break through the limitation of single orientation detection, and significantly improve the functional adaptability and practicality of the device. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a schematic diagram of the three-dimensional structure of the application;

[0029] Figure 2 is an explosion of the support and outer frame of the application Figure 1 ;

[0030] Figure 3 is an explosion of the support and outer frame of the application Figure 2 ;

[0031] Figure 4 is an enlarged view of A in the application Figure 3 ;

[0032] Figure 5 is an explosion of the slide groove and slide seat of the application

[0033] Figure 6 is a schematic diagram of the structure of the outer frame, inner frame, air bag and flap of the application

[0034] Figure 7 is an explosion of the outer frame and inner frame of the application

[0035] Figure 8 is an explosion of the slide rail and balance block of the application

[0036] Figure 9 is an explosion of the inner frame, flap and air bag of the application

[0037] Figure 10 is a schematic diagram of the state of the flap being pressed to form an extrusion port.

[0038] In the figure: 1, base; 2, light transmittance detector; 3, support; 4, outer frame; 5, inner frame; 6, air bag; 7, electric cylinder; 8, air pump; 9, flap; 10, extrusion port; 11, slide groove; 12, slide seat; 13, return spring; 14, rotating shaft; 15, bolt; 16, slide rail; 17, balance block; 18, inclined groove; 19, slider; 20, cable. DETAILED DESCRIPTION

[0039] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0040] Please refer to Figures 1 to 10 The present application provides a technical solution: a low-transmittance coated glass measuring device, comprising a base 1 and a light transmittance detector 2 arranged in the middle, and a support 3 fixedly arranged on both sides of the base 1. The base 1 is used to provide a stable support foundation for the entire device, ensuring that the device will not affect the detection accuracy due to shaking during the measurement process. The light transmittance detector 2 in the middle serves as the core detection component. Its detection area corresponds to the position of the glass after being laid horizontally. It can accurately receive the light transmitted through the glass and complete the light transmittance data collection and analysis. The side of the support 3 is provided with a U-shaped outer frame 4, and the inner frame 5 of the U-shaped structure is slidably arranged in the outer frame 4. The U-shaped structure of the outer frame 4 and the inner frame 5 is matched, which not only provides stable sliding guidance for the inner frame 5, but also ensures that the glass is in the center position of the device during clamping through the symmetrical U-shaped structure on both sides, avoiding the detection light from shifting due to clamping deviation; the inner frame 5 can smoothly slide along the inner side wall of the outer frame 4 to realize the distance adjustment between the glass, meeting the clamping needs of low-transmittance coated glass of different thicknesses.

[0041] The inner side of the inner frame 5 is provided with an air bag 6 made of flexible and wear-resistant material. Its shape matches the inner side profile of the inner frame 5, and it is in a natural contracted state in the initial state. When the inner frame 5 approaches the glass, the air bag 6 can first contact the side of the glass, avoiding the direct collision of the rigid structure of the inner frame 5 with the glass. Moreover, the air bag 6 has good elasticity and sealing performance, and can tightly fit the surface of the glass after inflation, which can not only realize the stable fixation of the glass, but also avoid scratching the coating layer of the glass.

[0042] The outer frame 4 is provided with an electric cylinder 7 for sliding the inner frame 5 to wrap and fix the glass. The fixed end of the electric cylinder 7 is fixedly connected with the outer side wall of the outer frame 4, and the piston rod end is connected with the outer side wall of the inner frame 5. The electric cylinder 7 can provide stable and controllable pushing force to ensure that the speed of the inner frame 5 sliding along the outer frame 4 is uniform and the displacement is accurate, avoiding the glass from being damaged by instantaneous stress due to excessive pushing force. Moreover, the outer frame 4 is provided with an air pump 8 connected with the air bag 6 through a hose. The air pump 8 provides a stable air source for the inflation of the air bag 6. The hose is made of a material that is resistant to high pressure and not prone to aging, ensuring that there is no leakage during gas transmission. The inflation rate of the air pump 8 can be adjusted according to the inflation needs of the air bag 6, realizing the smooth transition of the air bag 6 from initial contact to complete wrapping of the glass.

[0043] In the present embodiment, as Figure 1 ,Figure 2 、 Figure 3 、 Figure 4 、 Figures 5 to 10 As shown in FIG. 9, the inner shelf 5 is provided with a L-shaped flap 9 on each of the opposite sides. The rotation axis of the flap 9 is connected with the inner side wall of the inner shelf 5, and the flap 9 can rotate around the rotation axis within a range of 0-90°. In the initial state, the horizontal section of the flap 9 is attached to the inner side wall of the inner shelf 5, and the vertical section faces the center of the inner shelf 5. When the inner shelf 5 drives the air bag 6 to press the glass, the side of the glass will contact the vertical section of the flap 9 and apply a pushing force, so that the flap 9 gradually rotates around the rotation axis until a stable gap is formed between the glass and the outer opening of the flap 9. The gap is the extrusion outlet 10 of the air bag 6, and the width of the extrusion outlet 10 can be automatically adjusted according to the rotation angle of the flap 9, so that the air bag 6 can smoothly spread to the surface of the glass from the extrusion outlet 10 when it is inflated, and the air bag 6 is prevented from deviating from the extrusion direction due to excessive rotation of the flap 9.

[0044] The middle part of the support 3 is provided with a sliding groove 11, which is arranged in the vertical direction. The inner side wall of the sliding groove 11 is smooth, and a sliding seat 12 with an open top is arranged in the sliding groove 11. The outer side wall of the sliding seat 12 is attached to the inner side wall of the sliding groove 11, and can smoothly slide up and down along the sliding groove 11. The inner bottom of the sliding groove 11 is provided with a reset spring 13 for pushing the sliding seat 12 to move upwards. One end of the reset spring 13 is fixedly connected with the inner bottom of the sliding groove 11, and the other end is fixedly connected with the bottom of the sliding seat 12. In the initial state, the reset spring 13 is in a natural stretched state, and the sliding seat 12 is kept at the top position of the sliding groove 11. The side of the outer shelf 4 is fixedly provided with a toothed rotating shaft 14, and the axis of the rotating shaft 14 is in the horizontal direction. The rotating shaft 14 is rotatably arranged in the sliding seat 12, and the top opening of the sliding seat 12 is used to accommodate the rotating shaft 14. A bearing adapted to the rotating shaft 14 is arranged in the sliding seat 12, so that the rotating shaft 14 can smoothly rotate in the sliding seat 12. The inner top wall of the sliding groove 11 is provided with a latch 15 for inserting the sliding seat 12 along the toothed locking rotating shaft 14. The axis of the latch 15 is in the vertical direction, and the top thereof is connected with the driving component of the inner top wall of the sliding groove 11. In the initial state, the latch 15 is inserted into the sliding seat 12 and engaged with the toothed rotating shaft 14 under the action of the driving component, so as to lock the rotating shaft 14 and keep the outer shelf 4 in the vertical state, which is convenient for the glass to be placed vertically. When the sliding seat 12 moves downwards, the latch 15 is disengaged from the toothed rotating shaft 14, and the rotating shaft 14 is unlocked. The outer shelf 4 can freely rotate with the rotating shaft 14, so as to realize the posture conversion of the glass from vertical to horizontal.

[0045] In this embodiment, as shown in FIG. 10, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figures 5 to 10As shown, the inner side of the inner frame 5 is fixedly provided with a sliding rail 16, which is fixed horizontally on the inner side wall of the inner frame 5 and has a length adapted to the length of the inner frame 5. A balance block 17 is slidingly arranged on the sliding rail 16, the bottom of the balance block 17 is in close contact with the sliding surface of the sliding rail 16, and the balance block 17 can smoothly displace in the horizontal direction along the sliding rail 16. Two inclined grooves 18 are symmetrically formed on the balance block 17, the two inclined grooves 18 are mirror images, the inclination angle of the inclined grooves 18 is adapted to the pushing demand of the sliding block 19, and the inner side wall of the inclined groove 18 is a smooth surface to reduce the frictional resistance when the sliding block 19 slides. Two sliding blocks 19 are arranged on the sliding rail 16 to displace the balance block 17 along the corresponding inclined grooves 18. The sliding block 19 is slidingly connected with the sliding rail 16, and the top of the sliding block 19 is provided with a protrusion adapted to the inclined groove 18. The protrusion can be embedded in the inclined groove 18 and slide along the inclined groove 18. When the sliding block 19 slides along the sliding rail 16, the protrusion will exert a pushing force on the side wall of the inclined groove 18 to displace the balance block 17 along the sliding rail 16. However, the sliding block 19 will not directly contact the inclined groove 18 when it displaces, and there is still a margin to avoid the balance block 17 being stuck on one side with a small displacement. The gas bag 6 is fixedly provided with a cable 20 on both sides. The cable 20 is made of high-strength and non-stretching material. One end of the cable 20 is fixedly connected with the outer side wall of the gas bag 6, and the other end is provided with a clamping structure adapted to the sliding block 19. The cable 20 is clamped with the sliding block 19, and the clamping structure can realize quick connection and separation of the cable 20 and the sliding block 19, which is convenient for selecting whether to use the balance block 17 adjustment function according to the detection demand. When the gas bag 6 is extruded from the extrusion port 10, the inflation of the gas bag 6 will pull the same side cable 20, and the cable 20 will drive the sliding block 19 to slide along the sliding rail 16. The sliding block 19 displaces the balance block 17 by the cooperation of the protrusion and the inclined groove 18, realizes the movement of the balance block 17 to the specified direction, and then adjusts the weight distribution of the two sides of the inner frame 5 to ensure that the glass can accurately realize the target of facing down during the posture conversion.

[0046] In this embodiment, as shown in Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figures 5 to 10 As shown, the gas bag 6 is uniformly provided with a plurality of flexible protrusions, and the material of the flexible protrusions is silica gel. The flexible protrusions are in close contact with the glass surface as the gas bag 6 inflates. The flexible protrusions made of silica gel are in close contact with the glass surface as the gas bag 6 inflates. They can not only increase the contact friction to improve the stability of the glass fixation, but also avoid hard contact damage to the glass coating layer by using the flexibility of silica gel. At the same time, the protrusion structure can enhance the close contact between the gas bag 6 and the glass surface.

[0047] In this embodiment, as shown in Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figures 5 to 10As shown, the output end of the air pump 8 is provided with a pressure sensor, and the air pump 8 is electrically connected with the pressure sensor. The pressure sensor can monitor the air pressure in the air bag 6 in real time, and automatically control the air pump 8 to stop inflating when the air pressure reaches a preset value. This can avoid excessive expansion of the air bag 6, prevent the glass from being damaged due to excessive stress, and prevent the fixing effect from being affected by insufficient air pressure. In this way, the precision control of the air bag 6 inflation is realized, and the safety and reliability of the device operation are improved.

[0048] In this embodiment, as shown in Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figures 5 to 10 As shown, a pressure sensor is arranged between the piston rod end of the electric cylinder 7 and the inner frame 5, and the pressure sensor is electrically connected with the electric cylinder 7. By detecting the pressure of the contact between the inner frame 5 and the glass, the electric cylinder 7 is controlled to stop pushing when the pressure reaches a preset value. In this way, the initial clamping force of the inner frame 5 on the glass can be precisely controlled. The stability of the initial positioning of the glass is ensured, and the glass edge or film layer is prevented from being damaged due to excessive clamping force. In this way, the flexible control of the glass clamping is realized.

[0049] In this embodiment, as shown in Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figures 5 to 10 Figure 1 Figure 2 Figure 3 Figure 4 Figures 5 to 10 Figure 1 Figure 2 Figure 3 Figure 4 Figures 5 to 10 As shown, solid lubricant is applied on the sliding contact surface between the outer frame 4 and the inner frame 5. This can reduce the friction loss between the inner frame 5 and the outer frame 4 when the inner frame 5 slides. In this way, the sliding friction resistance between the inner frame 5 and the outer frame 4 can be effectively reduced, the component wear can be reduced, and the service life of the device can be prolonged. At the same time, the sliding of the inner frame 5 is smoother, the displacement accuracy of the inner frame 5 when pushed by the electric cylinder 7 is ensured, the glass clamping deviation caused by uneven friction resistance is avoided, and the stability of the device operation is improved.

[0050] A use method of a low-transmittance coated glass measuring device, comprising the following steps:

[0051] S1, vertically place the low-transmittance coated glass between the two inner frames 5, start the electric cylinder 7 to push the inner frame 5 to move along the outer frame 4 towards the glass, until the two air bags 6 slightly contact the side edges of the glass, realize the initial "suspension" positioning of the glass, prevent the glass from falling, start the air pump 8, slowly inflate the air bag 6 through the hose, and the air bag 6 spreads along the side edge of the glass to ensure that the glass is stably fixed between the inner frames 5 without shaking.

[0052] S2, with the air bag 6 wrapped glass, the outer frame 4 bearing weight increases, push the slide 12 along the slot 11 down compression reset spring 13, the latch 15 from the shaft 14 tooth pattern to unlock, while the glass side edge extrusion inside the L-shaped flap 9 in the inner frame 5, make the flap 9 around the rotating shaft flip, forming air bag 6 extrusion port 10, air pump 8 to air bag 6, air bag 6 through the extrusion port 10 to the glass surface spread, because the glass has film surface (low friction surface) and no film surface (high friction surface) friction coefficient is different, low friction surface air bag 6 extrusion speed faster, more attached, leading to glass both sides of the weight imbalance, the weight difference drive the outer frame 4 around the shaft 14 rotation, so that the glass from vertical gradually into horizontal, eventually low friction surface downward.

[0053] S3, before the air bag 6 air, the air bag 6 both sides of the cable 20 and the slide block 19 on the slide rail 16 clamping, low friction surface side attached more air bag 6 pull the same side of the slide block 19 along the slide rail 16 sliding, the slide block 19 through the inclined slot 18 to drive the balance block 17 to the high friction surface side, increase the weight of the high friction surface side, at this time, the glass from vertical gradually into horizontal process, high friction surface downward.

[0054] S4, start the transmittance detector 2, the device on the side of the light source emits detection light, the light through the horizontal glass is received by the transmittance detector 2 in the middle of the base 1, the detector automatically records and analyzes the transmittance data, generates a detection report, complete single glass transmittance detection.

[0055] The above shows and describes the basic principles of the present application, the main features and advantages of the present application. The technical staff of the industry should understand that the present application is not limited to the above examples, the above examples and the description described in this paper is only a preferred example of the present application, and is not intended to limit the present application, without departing from the spirit and scope of the present application, the present application will have various changes and improvements, these changes and improvements are all within the scope of the claimed present application. The scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A measuring device for low-e coated glass, characterized by: Including base (1) and the light transmittance detector (2) arranged in the middle, both sides of the base (1) are fixedly provided with support (3), the side of the support (3) is provided with the outer frame (4) of U-shaped structure, the inner frame (5) of U-shaped structure is slidably arranged in the outer frame (4); The inner side of the inner frame (5) is provided with an air bag (6); The outer frame (4) is provided with a cylinder (7) for sliding the inner frame (5) to make the air bag (6) wrap the fixed glass, the outer frame (4) is provided with an air pump (8) connected with the air bag (6) through a hose; The opposite sides of the inner frame (5) are rotatably provided with the flap (9) of L-shaped structure, when the inner frame (5) drives the air bag (6) to extrude the glass, the glass pushes the flap (9) to turn over, and the gap between the glass and the outer opening of the flap (9) is the extrusion outlet (10) of the air bag (6); The middle part of the support (3) is provided with a sliding groove (11), the sliding groove (11) is provided with a sliding seat (12) with an open top, the bottom of the sliding groove (11) is provided with a return spring (13) for pushing the sliding seat (12) to move upward, the side of the outer frame (4) is fixedly provided with a toothed rotating shaft (14), and the rotating shaft (14) is rotatably arranged in the sliding seat (12); The inner top wall of the sliding groove (11) is provided with a latch (15) inserted into the sliding seat (12) to lock the rotating shaft (14) along the toothed pattern; The inner frame (5) is fixedly provided with a sliding rail (16), the sliding rail (16) is slidably provided with a balance block (17), two inclined grooves (18) are symmetrically formed in the balance block (17), and the sliding rail (16) is provided with two sliding blocks (19) for pushing the balance block (17) to displace along the corresponding inclined grooves (18); The air bag (6) is fixedly provided with a cable (20) on both sides, the cable (20) is connected with the sliding block (19), and when the air bag (6) is extruded from the extrusion outlet (10), the balance block (17) is pushed to displace through the cable (20) and the sliding block (19).

2. The measuring device for low-transmission coated glass according to claim 1, wherein: The air bag (6) is uniformly provided with a plurality of flexible protrusions, the material of the flexible protrusions is silica gel, and the flexible protrusions are combined with the surface of the glass as the air bag (6) expands.

3. The measuring device for low-transmission coated glass according to claim 2, wherein: The output end of the air pump (8) is provided with a pressure sensor, and the air pump (8) is electrically connected with the pressure sensor.

4. The measuring device for low-transmission coated glass according to claim 3, wherein: The pressure sensor is arranged between the piston rod end of the cylinder (7) and the inner frame (5), and the pressure sensor is electrically connected with the cylinder (7).

5. The measuring device for low-transmission coated glass according to claim 4, wherein: The sliding contact surfaces of the outer frame (4) and the inner frame (5) are coated with a solid lubricant.

6. A method of using a low-e coated glass measuring device, the method comprising using a low-e coated glass measuring device as claimed in claim 5, wherein: The steps include: S1, vertically place the low-transmittance coated glass between the two inner frames (5), start the cylinder (7) to push the inner frame (5) to make the air bag (6) lightly touch the glass side, turn on the air pump (8) to inject air into the air bag (6), and make the air bag (6) wrap the fixed glass; S2, the outer frame (4) weight push slide (12) down to unlock the shaft (14), glass push overboard (9) to form the extrusion port (10), air pump (8) air to make the air bag (6) to the glass surface spread, due to the difference between the two sides of the glass friction coefficient, film surface air bag (6) attached more to the weight imbalance, driven glass vertical turn horizontal and film surface down; S3, when the need for high friction surface down, before air to cable (20) and slide block (19) card, film surface side air bag (6) pull slide block (19) push balance block (17) to the high friction surface movement, glass vertical turn horizontal when the high friction surface down; S4, start the transmittance detector (2), light through the glass is detected, record analysis data and generate report, complete detection.

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