Glass defect detection device and detection method thereof

Abstract

The present invention relates to the field of glass detection technology, and specifically discloses a glass defect detection device and a detection method thereof, comprising: a detection box; conveyor belts are installed in the middle of both ends of the detection box, and protective covers are installed in the upper parts of both ends of the detection box; a conveying mechanism, the conveying mechanism comprises a fixed frame, an adjustment slot, a limit mechanism, a support frame, an electric telescopic rod, a mounting frame, a conveying roller and a driver, and the adjustment slot is arranged at the top of the fixed frame; the present invention starts the electric telescopic rod and the driving motor, and the electric telescopic rod is extended to push the conveying roller to move downward and contact with the glass, so as to adjust according to the thickness of the glass, and at the same time, the driving motor drives two limit frames to move stably toward the middle, and makes the guide rollers installed on them contact and guide with the glass, so as to adjust according to the size of the flat glass, which ensures that the glass maintains a stable and continuous movement during the detection process, thereby improving the accuracy and efficiency of the detection.

Description

Technical Field

[0001] The present invention belongs to the technical field of glass detection, and in particular relates to a glass defect detection device and a detection method thereof. Background Art

[0002] Since flat glass will inevitably produce various defects such as bubbles, cracks, scratches, etc. during the production process, especially some special flat glass needs to go through the edge grinding process, this process may also produce defects such as edge collapse and corner collapse, these defects will seriously affect the appearance quality or use function of the glass. Therefore, it is particularly important to carry out quality inspection of glass. At present, the detection of flat glass defects mainly relies on online monitoring by human naked eyes, but this method is easy to cause eye fatigue, and the detection quality is easily affected by the subjective factors of the inspectors, making it difficult to effectively control the quality of glass. In order to overcome these problems, it has become a trend to use a large number of detection devices to detect glass.

[0003] In the Chinese patent with publication number CN220894165U, a device for detecting defects in photovoltaic glass is mentioned. By setting an image acquisition device, image defects on the photovoltaic panel can be accurately acquired, which is conducive to the computer making accurate judgments. By setting a lateral adjustment mechanism and a longitudinal adjustment mechanism, the device can detect photovoltaic glass panels of different sizes to meet specific production requirements; however, the detection device mainly relies on a conveyor belt to transport the glass. However, this design has exposed some problems in practical applications. Specifically, it is difficult for the glass to maintain a stable and continuous motion state during the detection process, which greatly affects the accuracy and efficiency of the detection. In addition, due to the lack of automatic adjustment function of the device, it has great limitations in use. Faced with glass of different sizes and thicknesses, the device cannot be effectively adaptively adjusted, making it difficult to meet diverse usage needs. Summary of the invention

[0004] The object of the present invention is to provide a glass defect detection device and a detection method thereof to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A glass defect detection device, comprising:

[0007] Testing box;

[0008] Conveyor belts are installed at the middle of both ends of the detection box, and protective covers are installed at the upper parts of both ends of the detection box;

[0009] Conveyor mechanism, the conveyor mechanism includes a fixed frame, an adjustment groove, a limiting mechanism, a support frame, an electric telescopic rod, a mounting frame, a conveyor roller and a driver. The adjustment groove is opened at the top end of the fixed frame. The limiting mechanism is installed between the inner walls on both sides of the adjustment groove. There are two support frames, electric telescopic rods, mounting frames, conveyor rollers and drivers. The two support frames are respectively installed at both ends of the fixed frame, and the bottom ends of the two support frames are installed at the top end of the conveyor belt. The two electric telescopic rods are respectively installed at the top ends of the two support frames. The two mounting frames are respectively installed at the bottom ends of the two electric telescopic rods. The two conveyor rollers are respectively installed between the inner walls on both sides of the two mounting frames. The two drivers are respectively installed on the outer walls of the two mounting frames;

[0010] Marking mechanism, the marking mechanism is installed on the outer wall of one side of the protective cover, and the marking mechanism can spray ink to mark the defective position of the flat glass.

[0011] Preferably, the limiting mechanism includes a positive and negative lead screw, a driving motor, an adjustment frame, a limiting frame, a storage groove and a guiding roller. The positive and negative lead screw is installed between the inner walls on both sides of the adjustment groove through a bearing. The driving motor is installed at one end of the positive and negative lead screw. There are two adjustment frames, limiting frames and storage grooves. The two adjustment frames are both installed on the outer surface of the positive and negative lead screw. The two limiting frames are respectively installed at the bottom ends of the adjustment frames. The two storage grooves are respectively opened on the opposite surfaces of the two limiting frames. There are several guiding rollers, and several guiding rollers are respectively installed between the inner walls on both sides of the two storage grooves through movable shafts.

[0012] Preferably, the driving motor, the electric telescopic rod and the driver are all electrically connected to the controller. The adjustment frame is set in a dry-shaped structure. The limiting frame is set in a π-shaped structure, and the bottom end surface of the limiting frame is higher than the top end surface of the conveyor belt. The fixed frame is set in a king-shaped structure. Several rubber strips are installed on the outer surface of the conveyor roller.

[0013] Preferably, a blowing pipe is jointly installed between the inner walls on both sides of one side of the protective cover. A storage box is installed at the lower part of one end of the detection box. Support frames are installed on both sides of the bottom ends of the two conveyor belts. A controller is installed in the middle of the outer wall of the detection box.

[0014] Preferably, inlets and outlets are opened at the upper parts of both ends of the detection box. A support plate is jointly installed between the inner walls on both sides of the detection box. Several line spectrum confocal sensors are installed on the top box wall of the detection box and the top end of the support plate. Vision sensors are installed on the upper parts of the inner walls on both sides of the detection box. Line laser profile sensors are installed in the middle of the inner walls on both sides of the detection box.

[0015] Preferably, the line spectrum confocal sensor, visual sensor, line laser profile sensor and conveyor belt are all electrically connected to the controller, the top surface of the line spectrum confocal sensor on the lower side is lower than the bottom inner wall of the inlet and outlet, and a dust filter is installed at the top of the blowing pipe.

[0016] Preferably, the marking mechanism includes a driving box, a fixed pipe, a marking nozzle, a circulating pipe, a blowing mechanism, a feed pipe and a material extraction pump. The driving box is installed on the outer wall of a protective cover on one side, the fixed pipe is installed at the top of the driving box, a plurality of marking nozzles are provided, and the plurality of marking nozzles are installed on the outer surface of the fixed pipe, the circulating pipe is installed between the top and bottom ends of the driving box, the blowing mechanism is installed between the inner walls on both sides of the driving box, the feed pipe is installed at the bottom end of the driving box, the material extraction pump is installed at the other end of the feed pipe, and the material extraction pump is installed on the outer wall of the storage box.

[0017] Preferably, the blower mechanism includes a drive shaft, a drive paddle, a rotating shaft, a bevel gear, a connecting frame and a blowing fan, the drive shaft is installed between the inner walls on both sides of the drive box through a bearing, the drive paddle is installed on the outer surface of the drive shaft, the connecting frame is installed between the drive box and the outer wall of the protective cover, the rotating shaft is installed on the top of the connecting frame through a bearing, two bevel gears are provided, and the two bevel gears are respectively installed at one end of the drive shaft and the top of the rotating shaft, and the blowing fan is installed at the bottom end of the rotating shaft.

[0018] Preferably, the driving paddle is located inside the driving box, the two bevel teeth are meshed with each other, the blowing fan is located directly above the top of the blowing pipe, the suction pump is electrically connected to the controller, and valves are installed on several of the marking nozzles, the circulation pipe and the delivery pipe.

[0019] A detection method for a glass defect detection device comprises the following steps:

[0020] Step 1: Convey glass: Start the electric telescopic rod to push the conveyor roller downward, then start the driver to drive the conveyor roller to rotate, which can cooperate with the conveyor belt to stably convey the flat glass. At the same time, start the drive motor to adjust the distance between the two limit frames, so that the outer surfaces of several guide rollers contact the outer surface of the glass for guidance, which can be automatically adjusted according to the size and thickness of the flat glass;

[0021] Step 2: Detect glass: When the flat glass is transported to the inside of the inspection box through a conveyor belt, several line spectrum confocal sensors can measure the surface size, shape, height, angle, thickness, etc. of the object to distinguish the appearance defect characteristics. At the same time, the visual sensor uses computer and image processing technology to realize defect detection, and the line laser profile sensor can realize the defect detection of pits, scratches, dirt and size on the glass surface;

[0022] Step 3: Mark defects: Start the pump to extract ink from the storage box, and then divert the ink to the marking nozzle through the fixed tube. Open the valve on the corresponding marking nozzle to spray the ink onto the flat glass, which can automatically mark the defects on the flat glass.

[0023] Step 4: Air-dry marking: When the ink is transported to the inside of the drive box, it can impact the driving paddle to rotate, and then through the meshing transmission between the two bevel teeth, the rotating shaft drives the blowing fan to start, and the wind can be blown into the blowing pipe and evenly sprayed onto the flat glass, which can air-dry the ink marked on the flat glass.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] (1) The present invention sets a conveying mechanism at the top of the conveyor belt. By starting the electric telescopic rod and the driving motor, the electric telescopic rod extends to push the conveying roller to move downward and contact the glass, so as to adjust according to the thickness of the glass. At the same time, the driving motor drives the two limit frames to move stably toward the middle, and the guide rollers installed thereon contact and guide the glass, so as to adjust according to the size of the flat glass. This ensures that the glass maintains a smooth and continuous movement during the detection process, thereby improving the accuracy and efficiency of the detection.

[0026] (2) The present invention sets a plurality of sensors inside the detection box. The plurality of line spectrum confocal sensors can synchronously detect the upper and lower surfaces of the glass. The line spectrum confocal sensor uses a non-contact measurement method to accurately identify tiny defects on the glass surface. At the same time, the visual sensor obtains an image of the glass surface and processes and analyzes the image using an algorithm. The line laser profile sensor captures the profile data of the glass edge. The combined effect of these technologies can achieve comprehensive detection of glass defects.

[0027] (3) The present invention provides a marking mechanism on the outer surface of the protective cover. By starting the extraction pump to extract the ink in the storage box, and then diverting the ink to the marking nozzle through the delivery pipe for spraying, the defects on the flat glass can be automatically marked. At the same time, the ink will impact the driving paddle to rotate during the delivery process, and then cooperate with the meshing transmission between the two bevel teeth to make the blowing fan rotate to blow air evenly into the blowing pipe, thereby drying the defect marks on the glass, which is helpful for subsequent manual or automatic sorting operations of the glass. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A perspective view of the present invention;

[0029] Figure 2 A three-dimensional diagram of the conveying mechanism of the present invention;

[0030] Figure 3 For the present invention Figure 2 Enlarged view of middle B;

[0031] Figure 4 It is a three-dimensional diagram of the limiting mechanism of the present invention;

[0032] Figure 5 is a cross-sectional view of the detection box of the present invention;

[0033] Figure 6 A three-dimensional diagram of the marking mechanism of the present invention;

[0034] Figure 7 A three-dimensional diagram of the hair dryer structure of the present invention;

[0035] Figure 8 For the present invention Figure 1 A magnified view of middle;

[0036] In the figure: 1. detection box; 2. conveyor belt; 3. conveying mechanism; 4. protective cover; 5. marking mechanism; 6. blowing pipe; 7. storage box; 8. support frame; 9. controller; 10. inlet and outlet; 11. support plate; 12. line spectrum confocal sensor; 13. visual sensor; 14. line laser profile sensor;

[0037] 31. Fixed frame; 32. Adjustment slot; 33. Limiting mechanism; 34. Support frame; 35. Electric telescopic rod; 36. Mounting frame; 37. Conveyor roller; 38. Driver;

[0038] 331, positive and negative screw rods; 332, driving motor; 333, adjusting frame; 334, limiting frame; 335, storage slot; 336, guide roller;

[0039] 51. Drive box; 52. Fixed pipe; 53. Marking nozzle; 54. Circulation pipe; 55. Blowing mechanism; 56. Feed pipe; 57. Extraction pump;

[0040] 551, driving shaft; 552, driving paddle; 553, rotating shaft; 554, bevel gear; 555, connecting frame; 556, blowing fan. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] Embodiment 1:

[0043] See also Figures 1 to 8 As shown, a glass defect detection device and a detection method thereof include:

[0044] Detection box 1;

[0045] Conveyor belts 2 are installed at the middle of both ends of the detection box 1, and protective covers 4 are installed at the upper parts of both ends of the detection box 1;

[0046] The conveying mechanism 3 includes a fixed frame 31, an adjusting slot 32, a limiting mechanism 33, a supporting frame 34, an electric telescopic rod 35, a mounting frame 36, a conveying roller 37 and a driver 38. The adjusting slot 32 is provided at the top of the fixed frame 31, the limiting mechanism 33 is installed between the inner walls on both sides of the adjusting slot 32, and two supporting frames 34, electric telescopic rod 35, mounting frame 36, conveying roller 37 and driver 38 are provided. Two supporting frames 34 are respectively installed at both ends of the fixed frame 31, and the bottom ends of the two supporting frames 34 are both installed at the top of the conveyor belt 2, the two electric telescopic rods 35 are respectively installed at the tops of the two supporting frames 34, the two mounting frames 36 are respectively installed at the bottom ends of the two electric telescopic rods 35, the two conveying rollers 37 are respectively installed between the inner walls on both sides of the two mounting frames 36, and the two drivers 38 are respectively installed on the outer walls of the two mounting frames 36;

[0047] The marking mechanism 5 is installed on the outer wall of the protective cover 4 on one side, and the marking mechanism 5 can spray ink to mark the defective position of the flat glass.

[0048] Depend on Figures 2 to 4 It can be known that the limiting mechanism 33 includes a forward and reverse screw rod 331, a driving motor 332, an adjusting frame 333, a limiting frame 334, a receiving groove 335 and a guide roller 336. The forward and reverse screw rod 331 is installed between the inner walls on both sides of the adjusting groove 32 through a bearing, and the driving motor 332 is installed at one end of the forward and reverse screw rod 331. There are two adjusting frames 333, two limiting frames 334 and two receiving grooves 335. The two adjusting frames 333 are both installed on the outer surface of the forward and reverse screw rod 331. The two limiting frames 334 are respectively installed at the bottom ends of the adjusting frames 333. The two receiving grooves 335 are respectively opened on the opposite surfaces of the two limiting frames 334. There are a plurality of guide rollers 336, and the plurality of guide rollers 336 are respectively installed between the inner walls on both sides of the two receiving grooves 335 through movable shafts.

[0049] As can be seen from the above, when the flat glass is placed on the conveyor belt 2 for transmission, the electric telescopic rod 35, the driver 38 and the drive motor 332 can be started through the controller 9. First, the electric telescopic rod 35 extends to push the mounting frame 36 to move downward, which can stably drive the conveying roller 37 to move downward and contact the glass, so that the detection device can be suitable for detecting flat glass of different thicknesses, and is also convenient for flexible adjustment according to the thickness of the glass. At the same time, the driver 38 drives the conveying roller 37 to rotate, and the flat glass is transmitted together with the conveyor belt 2. In addition, the drive motor 332 drives the forward and reverse screw rods 331 to rotate, so that the two screw rods 331 can rotate. The adjustment frame 333 moves stably toward the middle in the adjustment groove 32, and drives the two limit frames 334 to move stably toward the middle, so that the multiple guide rollers 336 installed in the storage groove 335 are in contact with the glass. The guide rollers 336 are rollable and guide the glass without affecting the movement of the glass, ensuring that the glass maintains a stable and continuous movement during the detection process, thereby improving the accuracy and efficiency of the detection. In this way, the detection device can be applied to the detection of flat glass of different sizes, reducing the limitations of use, meeting diverse usage needs, and expanding the scope of application.

[0050] Specifically, refer to Figures 2 to 4 As shown, the driving motor 332, the electric telescopic rod 35 and the driver 38 are all electrically connected to the controller 9, the adjustment frame 333 is set to a Chinese-shaped structure, the limit frame 334 is set to a π-shaped structure, and the bottom end surface of the limit frame 334 is higher than the top end surface of the conveyor belt 2, the fixed frame 31 is set to a Chinese-shaped structure, and a plurality of rubber strips are installed on the outer surface of the conveying roller 37.

[0051] As can be seen from the above, it is convenient for the controller 9 to fully control the entire detection device. The dry-shaped adjustment frame 333 is convenient for limiting it on the fixed frame 31. The π-shaped limit frame 334 can be limited on the support frame 34, which can improve the stability of the limit frame 334 and is beneficial for the limit frame 334 to stably guide the flat glass so that the limit frame 334 does not contact the conveyor belt 2. The Wang-shaped fixed frame 31 can improve its own structural strength. The rubber strip can increase the friction between the conveying roller 37 and the glass, and the rubber strip can also provide a certain buffering effect to protect the glass surface from damage.

[0052] Embodiment 2:

[0053] refer to Figure 1 and Figure 5 As shown, a blowing pipe 6 is installed between the inner walls of both sides of the protective cover 4 on one side, a material storage box 7 is installed at the lower part of one end of the detection box 1, support frames 8 are installed on both sides of the bottom ends of the two conveyor belts 2, and a controller 9 is installed in the middle of the outer wall of the detection box 1;

[0054] Entrances and exits 10 are provided at the upper parts of both ends of the detection box 1, a support plate 11 is installed between the inner walls on both sides of the detection box 1, a number of line spectrum confocal sensors 12 are installed on the top box wall of the detection box 1 and the top of the support plate 11, visual sensors 13 are installed on the upper parts of the inner walls on both sides of the detection box 1, and line laser profile sensors 14 are installed in the middle parts of the inner walls on both sides of the detection box 1.

[0055] As can be seen from the above, when the conveyor belt 2 cooperates with the conveying mechanism 3 to stably convey the flat glass, the glass passes through the inlet and outlet 10 and enters the detection box 1. At this time, the upper and lower surfaces of the glass can be synchronously detected through multiple line spectrum confocal sensors 12. The line spectrum confocal sensor 12 adopts a non-contact measurement method to avoid the wear or foreign matter problems caused by direct contact. It is particularly suitable for glass, which is a fragile material that requires high-precision measurement. The line spectrum confocal sensor 12 can obtain 3D feature data of the flat glass, including appearance size, shape, height and other information, and by being installed above and below the glass, a complete 3D image of the upper and lower surfaces of the glass can be obtained, and a comprehensive measurement of the glass can be achieved. For detection, line scanning CMOS imaging can be used to realize 3D feature analysis of the appearance of the tested glass and accurately identify tiny defects on the glass surface. At the same time, the visual sensor 13 obtains the image of the glass surface and processes and analyzes the image with an algorithm, which can realize accurate identification of tiny and hidden defects. The line laser profile sensor 14 captures the contour data of the glass edge, and cooperates with a special contour extraction algorithm to realize the detection of glass surface defects through depth map and brightness map, which is particularly effective for detecting glass edge defects. With the joint action of these sensors, richer defect information can be obtained, which can realize comprehensive and sufficient detection of flat glass defects and improve the accuracy of detection.

[0056] Preferably, reference Figure 1 and Figure 5 As shown, the line spectrum confocal sensor 12, the visual sensor 13, the line laser profile sensor 14 and the conveyor belt 2 are all electrically connected to the controller 9, the top surface of the lower line spectrum confocal sensor 12 is lower than the bottom inner wall of the inlet and outlet 10, and a dust filter is installed at the top of the blowing pipe 6.

[0057] As can be seen from the above, these sensors can transmit the detection data to the controller 9 for analysis and processing, and the conveyor belt 2 can keep the glass in continuous motion during the detection process, so that the line spectrum confocal sensor 12 on the lower side does not contact the glass, does not affect the transmission of the glass, and is also convenient for it to detect defects at the bottom of the glass. The dust filter can prevent dust or impurities from entering the blowing pipe 6.

[0058] Embodiment three:

[0059] refer to Figures 6 to 8As shown, the marking mechanism 5 includes a driving box 51, a fixed pipe 52, a marking nozzle 53, a circulation pipe 54, a blower mechanism 55, a feed pipe 56 and a material extraction pump 57. The driving box 51 is mounted on the outer wall of the protective cover 4 on one side, the fixed pipe 52 is mounted on the top of the driving box 51, a plurality of marking nozzles 53 are provided, and the plurality of marking nozzles 53 are mounted on the outer surface of the fixed pipe 52, the circulation pipe 54 is mounted between the top and the bottom of the driving box 51, the blower mechanism 55 is mounted between the inner walls on both sides of the driving box 51, the feed pipe 56 is mounted at the bottom of the driving box 51, the material extraction pump 57 is mounted on the other end of the feed pipe 56, and the material extraction pump 57 is mounted on the outer wall of the storage box 7;

[0060] The hair dryer mechanism 55 includes a driving shaft 551, a driving paddle 552, a rotating shaft 553, a bevel gear 554, a connecting frame 555 and a blowing fan 556. The driving shaft 551 is installed between the inner walls on both sides of the driving box 51 through a bearing, the driving paddle 552 is installed on the outer surface of the driving shaft 551, the connecting frame 555 is installed between the outer wall of the driving box 51 and the protective cover 4, the rotating shaft 553 is installed on the top of the connecting frame 555 through a bearing, two bevel gears 554 are provided, and the two bevel gears 554 are respectively installed at one end of the driving shaft 551 and the top of the rotating shaft 553, and the blowing fan 556 is installed at the bottom end of the rotating shaft 553.

[0061] As can be seen from the above, when the sensor on the detection device detects that there are defects in the glass, the sensor transmits the detection information to the controller 9. The controller 9 automatically analyzes, classifies and identifies the detection data through the control system combined with the intelligent algorithm. After that, the controller 9 controls the pump 57 to start and open the corresponding valve. The pump 57 extracts ink from the storage box 7 and inputs it into the drive box 51 through the feed pipe 56. Then, the ink is diverted to the marking nozzles 53 corresponding to the defects through the fixed pipe 52. These marking nozzles 53 open the valves to spray ink, thereby automatically marking the defects on the flat glass. At the same time, the ink During the transportation process, water impacts the driving paddle 552 in the driving box 51, causing the driving shaft 551 and the bevel gear 554 thereon to rotate. In this way, the rotating shaft 553 drives the blowing fan 556 to rotate through the meshing transmission between the two bevel gears 554, so that wind can be blown into the blowing pipe 6 and evenly blown toward the flat glass, which can dry the ink mark on the glass, making the mark clearer and enhancing its adhesion, which is helpful for subsequent manual or automatic sorting operations on the glass. In addition, the circulation of ink can be realized through the circulation pipe 54, which can continuously impact the driving paddle 552 to rotate and provide power for the rotation of the driving shaft 551.

[0062] Preferably, reference Figures 6 to 8As shown, the driving paddle 552 is located inside the driving box 51, the two bevel teeth 554 are meshed with each other, the blowing fan 556 is located directly above the top of the blowing pipe 6, the suction pump 57 is electrically connected to the controller 9, and valves are installed on several marking nozzles 53, the circulation pipe 54 and the feed pipe 56.

[0063] As can be seen from the above, the ink entering the driving box 51 can impact the driving paddle 552 to rotate, and the rotation of the driving paddle 552 can be transmitted to the blowing fan 556, so that the blowing fan 556 can blow wind into the interior of the blowing pipe 6. The suction pump 57 can be controlled by the controller 9 to extract ink, and the valve can control the flow of ink.

[0064] Embodiment 4:

[0065] refer to Figures 1 to 8 As shown, a detection method of a glass defect detection device comprises the following steps:

[0066] Step 1: conveying glass: start the electric telescopic rod 35 to push the conveying roller 37 to move downward, then start the driver 38 to drive the conveying roller 37 to rotate, and cooperate with the conveyor belt 2 to stably convey the flat glass. At the same time, start the driving motor 332 to adjust the distance between the two limit frames 334, so that the outer surfaces of the plurality of guide rollers 336 contact with the outer surface of the glass for guidance, and can automatically adjust according to the size and thickness of the flat glass;

[0067] Step 2, glass inspection: When the flat glass is transported to the inside of the inspection box 1 through the conveyor belt 2, the surface size, shape, height, angle, thickness, etc. of the object can be measured by a number of line spectrum confocal sensors 12 to distinguish the appearance defect characteristics. At the same time, the visual sensor 13 uses computer and image processing technology to realize defect detection, and the line laser profile sensor 14 can realize the defect detection of pits, scratches, dirt and size on the glass surface;

[0068] Step 3, marking defects: start the extraction pump 57 to extract the ink in the storage box 7, and then divert the ink to the marking nozzle 53 through the fixed tube 52, and open the valve on the corresponding marking nozzle 53 to spray the ink onto the flat glass, so as to automatically mark the defects on the flat glass;

[0069] Step 4: Air-dry marking: When the ink is transported to the interior of the drive box 51, it can impact the driving paddle 552 to rotate, and then through the meshing transmission between the two bevel teeth 554, the rotating shaft 553 drives the blowing fan 556 to start, and the wind can be blown into the blowing pipe 6 and evenly sprayed onto the flat glass, so as to air-dry the ink marked on the flat glass.

[0070] Application examples:

[0071] This design is applied to the quality control link in the glass manufacturing and processing industry, especially in the environment of glass production lines, glass deep processing enterprises, scientific research institutions and laboratories. By setting up a conveying mechanism 3, this design can assist the conveyor belt 2 to stably convey flat glass, and the conveying mechanism 3 can be adjusted according to the size and thickness of the glass to ensure that the glass maintains smooth and continuous movement during the detection process, which helps to reduce the detection error caused by unstable glass movement, and by setting up multiple sensors inside the detection box 1, these sensors can capture slight changes in the glass surface, thereby achieving full detection of glass defects, thereby ensuring that each piece of glass meets quality standards, reducing customer complaints and returns caused by defective products, and when a defect in the flat glass is detected, the marking mechanism 5 will spray ink to mark the defective position, and then quickly air dry the ink to make the mark more conspicuous and not easy to fall off, which is helpful for subsequent manual or automatic sorting operations. This detection method greatly shortens the detection time and improves the detection efficiency.

[0072] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A glass defect detection device, characterized in that: include: Detection box (1); Conveyor belts (2) are installed in the middle of both ends of the detection box (1), and protective covers (4) are installed on the upper parts of both ends of the detection box (1); A conveying mechanism (3), the conveying mechanism (3) comprising a fixing frame (31), an adjusting slot (32), a limiting mechanism (33), a supporting frame (34), an electric telescopic rod (35), a mounting frame (36), a conveying roller (37) and a driver (38), the adjusting slot (32) being disposed at the top of the fixing frame (31), the limiting mechanism (33) being mounted between inner walls on both sides of the adjusting slot (32), the supporting frame (34), the electric telescopic rod (35), the mounting frame (36), the conveying roller (37) and the driver (38) being arranged There are two, the two support frames (34) are respectively mounted at the two ends of the fixed frame (31), and the bottom ends of the two support frames (34) are both mounted on the top of the conveyor belt (2), the two electric telescopic rods (35) are respectively mounted on the top of the two support frames (34), the two mounting frames (36) are respectively mounted on the bottom ends of the two electric telescopic rods (35), the two conveying rollers (37) are respectively mounted between the inner walls of both sides of the two mounting frames (36), and the two drivers (38) are respectively mounted on the outer walls of the two mounting frames (36); The limiting mechanism (33) comprises a forward and reverse screw rod (331), a driving motor (332), an adjusting frame (333), a limiting frame (334), a storage groove (335) and a guide roller (336); the forward and reverse screw rod (331) is installed between the inner walls of both sides of the adjusting groove (32) via a bearing; the driving motor (332) is installed at one end of the forward and reverse screw rod (331); the adjusting frame (333), the limiting frame (334) and the storage groove (335) are Two of the two adjustment frames (333) are provided, the two adjustment frames (333) are both installed on the outer surface of the forward and reverse screw rods (331), the two limiting frames (334) are respectively installed at the bottom ends of the adjustment frames (333), the two receiving grooves (335) are respectively opened on the opposite surfaces of the two limiting frames (334), a plurality of guide rollers (336) are provided, and the plurality of guide rollers (336) are respectively installed between the inner walls on both sides of the two receiving grooves (335) through movable shafts; A marking mechanism (5) is installed on the outer wall of the protective cover (4) on one side, and the marking mechanism (5) can spray ink to mark the defect position of the flat glass.

2. A glass defect detection device according to claim 1, characterized in that: The driving motor (332), the electric telescopic rod (35) and the driver (38) are all electrically connected to the controller (9); the adjusting frame (333) is configured as a "gan"-shaped structure; the limiting frame (334) is configured as a "π"-shaped structure, and the bottom end surface of the limiting frame (334) is higher than the top end surface of the conveyor belt (2); the fixing frame (31) is configured as a "wang"-shaped structure; and a plurality of rubber strips are installed on the outer surface of the conveying roller (37).

3. A glass defect detection device according to claim 1, characterized in that: A blow pipe (6) is installed between the inner walls of both sides of the protective cover (4) on one side, a material storage box (7) is installed at the lower part of one end of the detection box (1), support frames (8) are installed on both sides of the bottom ends of the two conveyor belts (2), and a controller (9) is installed in the middle of the outer wall of the detection box (1).

4. A glass defect detection device according to claim 3, characterized in that: An inlet and outlet (10) are provided at the upper parts of both ends of the detection box (1); a support plate (11) is installed between the inner walls on both sides of the detection box (1); a plurality of line spectrum confocal sensors (12) are installed on the top box wall of the detection box (1) and the top of the support plate (11); visual sensors (13) are installed on the upper parts of the inner walls on both sides of the detection box (1); and line laser profile sensors (14) are installed in the middle parts of the inner walls on both sides of the detection box (1).

5. A glass defect detection device according to claim 4, characterized in that: The line spectrum confocal sensor (12), the visual sensor (13), the line laser profile sensor (14) and the conveyor belt (2) are all electrically connected to the controller (9); the top end surface of the line spectrum confocal sensor (12) on the lower side is lower than the bottom inner wall of the inlet and outlet (10); and a dust filter is installed at the top end of the blowing pipe (6).

6. The glass defect detection device according to claim 1, characterized in that: The marking mechanism (5) comprises a driving box (51), a fixed pipe (52), a marking nozzle (53), a circulation pipe (54), a blower mechanism (55), a material delivery pipe (56) and a material extraction pump (57). The driving box (51) is mounted on the outer wall of a protective cover (4) on one side, the fixed pipe (52) is mounted on the top of the driving box (51), a plurality of marking nozzles (53) are provided, and the plurality of marking nozzles (53) are all mounted on the outer surface of the fixed pipe (52), the circulation pipe (54) is mounted between the top and bottom of the driving box (51), the blower mechanism (55) is mounted between the inner walls on both sides of the driving box (51), the material delivery pipe (56) is mounted on the bottom of the driving box (51), the material extraction pump (57) is mounted on the other end of the material delivery pipe (56), and the material extraction pump (57) is mounted on the outer wall of the material storage box (7).

7. A glass defect detection device according to claim 6, characterized in that: The blower mechanism (55) comprises a drive shaft (551), a drive paddle (552), a rotating shaft (553), a bevel gear (554), a connecting frame (555) and a blower fan (556); the drive shaft (551) is mounted between the inner walls of both sides of the drive box (51) via a bearing; the drive paddle (552) is mounted on the outer surface of the drive shaft (551); the connecting frame (555) is mounted between the drive box (51) and the outer wall of the protective cover (4); the rotating shaft (553) is mounted on the top end of the connecting frame (555) via a bearing; two bevel gears (554) are provided, and the two bevel gears (554) are respectively mounted on one end of the drive shaft (551) and the top end of the rotating shaft (553); and the blower fan (556) is mounted on the bottom end of the rotating shaft (553).

8. The glass defect detection device according to claim 7, characterized in that: The driving paddle (552) is located inside the driving box (51), the two bevel teeth (554) are meshed with each other, the blowing fan (556) is located directly above the top of the blowing pipe (6), the material extraction pump (57) is electrically connected to the controller (9), and valves are installed on the plurality of marking nozzles (53), the circulation pipe (54) and the material delivery pipe (56).

9. A detection method for a glass defect detection device, applicable to a glass defect detection device according to any one of claims 1 to 8, characterized in that: The following steps are involved: Step 1, conveying glass: starting the electric telescopic rod (35) to push the conveying roller (37) to move downward, and then starting the driver (38) to drive the conveying roller (37) to rotate, so as to cooperate with the conveyor belt (2) to stably convey the flat glass. At the same time, starting the driving motor (332) can adjust the distance between the two limit frames (334) so ​​that the outer surfaces of the plurality of guide rollers (336) contact with the outer surface of the glass for guiding, and can automatically adjust according to the size and thickness of the flat glass; Step 2, inspecting glass: when the flat glass is transported to the interior of the inspection box (1) via the conveyor belt (2), the surface size and shape of the object can be measured by a plurality of line spectrum confocal sensors (12) to distinguish the appearance defect characteristics, while the visual sensor (13) uses computer and image processing technology to realize defect detection, and the line laser profile sensor (14) can realize the defect detection of pits, scratches, dirt and size on the glass surface; Step 3, marking defects: starting the extraction pump (57) to extract ink from the storage box (7), and then diverting the ink to the marking nozzle (53) through the fixed tube (52), and opening the valve on the corresponding marking nozzle (53) to spray the ink onto the flat glass, so as to automatically mark the defects on the flat glass; Step 4: Air-dry marking: When the ink is transported to the interior of the drive box (51), it impacts the driving paddle (552) to rotate, and then through the meshing transmission between the two bevel teeth (554), the rotating shaft (553) drives the blowing fan (556) to start, so that air can be blown into the blowing pipe (6) and evenly sprayed onto the flat glass, thereby air-drying the ink marked on the flat glass.

Images