A device for detecting black spots on glass panels

Abstract

This utility model relates to the field of glass panel technology, specifically to a device for detecting black spots on glass panels. The technical solution of this utility model includes a carrier assembly on a machine base for receiving glass panels. Next to the carrier assembly, an AOI (Automated Optical Inspection) component detects the presence of black spots on the glass panels. A gripping component picks up good and defective glass panels after inspection. Next to the gripping component, a defective product storage component, a first conveyor belt, and a good product storage component on the first conveyor belt are respectively arranged for receiving and conveying defective and good glass panels. This utility model replaces the manual sampling inspection process for black spot defects on glass panels after the screen printing stage, significantly reducing the occurrence of missed inspections and improving inspection efficiency and yield.

Description

Technical Field

[0001] This utility model relates to the field of glass panel technology, and in particular to a device for detecting black spots on glass panels. Background Technology

[0002] During the glass panel production process, black spots can be generated in the glass panels due to impurities in raw materials and the melting process. The presence of black spots not only affects the appearance of the glass panels but also their product performance, thus glass panels with black spots are considered defective products. Currently, the main methods of visual inspection are manual sampling after the screen printing stage and AOI (Automated Optical Inspection) in the finished product stage. However, black spot defects in glass panels are not easily detected by manual sampling, and the process from manual sampling after screen printing to AOI visual inspection in the finished product stage is relatively long. By the time black spot defects are discovered, the entire batch is often already defective. Therefore, there is an urgent need for a highly accurate and automated black spot detection device for glass panels. Utility Model Content

[0003] Therefore, it is necessary to provide a highly accurate and automated black spot detection device for glass panels to address the above-mentioned shortcomings.

[0004] A glass panel black spot detection device includes: a machine base, a carrier assembly disposed on the upper surface of the machine base for receiving glass panels, an AOI detection assembly and a gripping assembly fixed on the upper surface of the machine base and located next to the carrier assembly, a defective product storage assembly disposed next to the gripping assembly, a first conveyor belt disposed on the upper surface of the machine base and located next to the gripping assembly, and a good product storage assembly disposed on the first conveyor belt.

[0005] The AOI detection component includes at least one CCD camera;

[0006] The gripping assembly includes a robotic arm disposed on the upper surface of the machine platform and located next to the carrier assembly, and the end of the robotic arm is provided with at least one suction cup for gripping the glass panel;

[0007] The good product storage component includes a good product storage tray movably disposed on the first conveyor belt, and the good product storage tray has a plurality of good product storage positions;

[0008] The defective product storage assembly includes a defective product storage bracket movably disposed on the upper surface of the machine platform, the defective product storage bracket having defective product storage positions.

[0009] Preferably, the carrier assembly includes a turntable rotatably disposed on the upper surface of the machine platform, and the turntable has a plurality of glass panel placement positions around its center of rotation.

[0010] Preferably, the AOI detection assembly further includes a mounting plate fixed vertically to the upper surface of the machine platform and located beside the carrier assembly, a slide rail fixed on the mounting plate and extending vertically, a sliding plate slidably disposed on the slide rail, and the CCD camera fixed on the sliding plate.

[0011] Preferably, the AOI detection assembly further includes a light source fixed to the mounting plate and located between the CCD camera and the turntable.

[0012] Preferably, the robotic arm has a rotating shaft at its end, a rotating plate is fixedly connected to the rotating shaft, and a suction cup is provided at each end of the rotating plate.

[0013] Preferably, a first station and a second station located next to the gripping component are sequentially arranged on the first conveyor belt along its transmission direction, and the good product storage tray is placed in the second station; the good product storage component further includes at least four pillars extending vertically and fixed to the upper surface of the machine platform, the pillars are located in the first station, each pillar is provided with a movable plate, and the pillars and the movable plates together form a storage tray placement position above the first conveyor belt.

[0014] Preferably, the top of the support column is inclined away from the storage tray placement position to form a guide bar.

[0015] Preferably, the defective product storage assembly further includes a defective product conveying platform located beside the defective product storage bracket and having a groove on its upper surface. The groove communicates with the defective product storage position. The defective product conveying platform is equipped with a motor, a plurality of rollers driven by the motor and located at the bottom of the groove, and a second conveyor belt sleeved on the rollers.

[0016] Preferably, the upper surface of the machine tool is recessed in the area below the defective product storage bracket to form a cavity, and the defective product storage assembly further includes a lifting platform disposed in the cavity, and the defective product storage bracket is movably disposed on the lifting platform.

[0017] Preferably, the upper surface of the defective product storage rack is provided with a handle.

[0018] This invention discloses a glass panel black spot detection device. A carrier assembly is installed on the machine to receive the glass panels. Next to the carrier assembly, an AOI (Automated Optical Inspection) component detects the presence of black spots on the glass panels. A gripping component picks up good and defective glass panels after inspection. Next to the gripping component, a defective product storage component, a first conveyor belt, and a good product storage component on the first conveyor belt are respectively installed to receive and transport defective and good glass panels. This invention replaces the manual sampling inspection process for black spot defects on glass panels after the screen printing stage, significantly reducing missed detections and improving inspection efficiency and yield. Attached Figure Description

[0019] Figure 1 This is a perspective view of one embodiment of the glass panel black spot detection device of this utility model;

[0020] Figure 2 This is a top view of one embodiment of the glass panel black spot detection device of this utility model;

[0021] Figure 3 This is a schematic diagram of the AOI detection component in one embodiment of the glass panel black spot detection device of this utility model;

[0022] Figure 4 This is a schematic diagram of the gripping component in one embodiment of the glass panel black spot detection device of this utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the good product storage component in one embodiment of the glass panel black spot detection device of this utility model;

[0024] Figure 6 This is a schematic diagram of the defective product storage component in one embodiment of the glass panel black spot detection device of this utility model.

[0025] Explanation of reference numerals in the attached diagram: 100-Machinery, 100a-Cavity, 200-Carrier assembly, 210-Turntable, 210a-Glass panel placement position, 300-AOI inspection assembly, 310-CCD camera, 320-Mounting plate, 330-Slide rail, 340-Sliding plate, 350-Light source, 400-Gripping assembly, 410-Robotic arm, 420-Suction cup, 430-Rotating axis, 440-Rotating plate, 500-Defective product storage assembly, 510-Defective product storage bracket 510a - Defective product storage location, 511 - Handle, 520 - Defective product conveyor, 520a - Groove, 521 - Motor, 522 - Roller, 523 - Second conveyor belt, 530 - Lifting platform, 600 - First conveyor belt, 600a - First workstation, 600b - Second workstation, 700 - Good product storage assembly, 710 - Good product storage tray, 710a - Good product storage location, 720 - Support column, 720a - Storage tray placement location, 721 - Movable plate, 722 - Guide bar. Detailed Implementation

[0026] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0027] This utility model discloses a device for detecting black spots on glass panels. For details, please refer to... Figure 1-6The glass panel black spot detection device of this embodiment includes: a machine base 100 for carrying components, a carrier assembly 200 disposed on the upper surface of the machine base 100 for receiving glass panels, an AOI detection assembly 300 and a gripping assembly 400 fixedly connected to the upper surface of the machine base 100 and disposed beside the carrier assembly 200, a defective product storage assembly 500 disposed beside the gripping assembly 400, a first conveyor belt 600 disposed on the upper surface of the machine base 100 and disposed beside the gripping assembly 400, and a good product storage assembly 700 disposed on the first conveyor belt 600. The AOI inspection component 300 includes at least one CCD camera 310 to acquire image information, with the lens of the CCD camera 310 suspended downwards above the carrier component 200. The gripping component 400 includes a robotic arm 410 disposed on the upper surface of the machine base 100 and located beside the carrier component 200. The robotic arm 410 is equipped with at least one suction cup 420. By using the suction cup 420 to grip the inspected glass panels, good glass panels without black spot defects are transferred to the good product storage component 700, and defective glass panels with black spot defects are transferred to the defective product storage component 700. The system includes a good product storage assembly 500 and a defective product storage assembly 700. The good product storage assembly 700 includes a good product storage tray 710 movably disposed on the first conveyor belt 600, with 10 good product storage positions 710a on each tray. The defective product storage assembly 500 includes a defective product storage bracket 510 movably disposed on the upper surface of the machine 100, with defective product storage positions 510a. Defective glass panels with black spot defects can be stacked and stored in the defective product storage positions 510a. Each defective product storage bracket 510 can store 30 defective glass panels. It should be noted that in this invention, a good product glass panel is a glass panel without black spot defects, and a defective glass panel is a glass panel with black spot defects.

[0028] The glass panel black spot detection device of this embodiment is applied to detect black spot defects in glass panels after the screen printing stage in the glass panel manufacturing process. The specific application process is as follows: First, the semi-finished glass panel after screen printing is placed on the carrier assembly 200 for receiving the glass panel. Second, the CCD camera 310 of the AOI detection assembly 300 is used to acquire image information to determine whether there are black spot defects in the glass panel. If the detected glass panel does not have black spot defects, the robotic arm 410 of the gripping assembly 400 drives the suction cup 420 at its end to grip and transfer the glass panel without black spot defects to the good product storage position 710a of the good product storage assembly 700. If the detected glass panel has black spot defects, the robotic arm 410 of the gripping assembly 400 drives the suction cup 420 at its end to grip and transfer the glass panel with black spot defects to the defective product storage position 510a of the defective product storage assembly 500. When all the good product storage slots 710a on a good product storage tray 710 are full, the first conveyor belt 600 carries the good product storage tray 710 to the next process; when a defective product storage rack 510 is full, an empty defective product storage rack 510 is replaced into the defective product storage assembly 500. This completes the detection of black spot defects in glass panels, saving the cost of manual sampling, improving detection efficiency, and timely detection of semi-finished glass panels with black spot defects, thereby improving the overall yield of the processing technology.

[0029] It should be noted that the manner in which semi-finished glass panels are placed into the carrier assembly 200, the manner in which good glass panels leave the device with the good product storage tray 710, the manner in which good glass panels are removed and moved to the next process, and the manner in which defective glass panels leave the device with the defective product storage bracket 510 are determined according to actual production conditions and production needs, and are not within the scope of this utility model improvement, therefore they are not described in the text of this utility model. The number of glass panels that the good product storage tray 710 and the defective product storage bracket 510 can hold is determined according to actual production conditions and production needs, and the good product storage tray 710 and the defective product storage bracket 510 that can hold different numbers of glass panels are within the protection scope of this utility model.

[0030] To accelerate the efficiency of the CCD camera 310 in detecting the glass panel and the gripping component 400 in gripping the glass panel, in one embodiment, as follows: Figures 1-4As shown, a circular turntable 210 is used to receive the glass panels to be inspected. The turntable 210 rotates around its axis of rotation. Several glass panel placement positions 210a are spaced apart around the center on the upper surface of the turntable 210, and these positions are in contact with the sides of the glass panels. After receiving a glass panel from the previous process, the glass panel placement position 210a rotates the turntable 210 to quickly bring the glass panel to be inspected under the CCD camera 310. The CCD camera 310 then acquires image information of the glass panel to be inspected and determines whether there are black spot defects. The turntable 210 rotates again, and the inspected glass panel comes to the side of the robotic arm 410 of the gripping assembly 400. Based on the judgment result, the robotic arm 410 transfers the glass panel to either the good product storage position 710a or the defective product storage position 510a. At this point, the next glass panel to be inspected comes under the CCD camera 310 for inspection. This cycle shortens the inspection interval between adjacent glass panels and improves the inspection speed.

[0031] In order to obtain a clearer image from the CCD camera 310, in one embodiment, such as Figure 1 , Figure 3 As shown, the AOI inspection assembly 300 also includes a mounting plate 320 fixed vertically on the upper surface of the machine base 100 and located next to the carrier assembly 200, a slide rail 330 fixed on the mounting plate 320 and extending vertically, and a sliding plate 330 slidably disposed on the slide rail 320. The CCD camera 310 is fixed on the sliding plate 330 and moves vertically by being driven by the sliding plate 330. The optimal position is selected according to the size of the glass panel to be inspected. It can also perform regional inspections on a glass panel to obtain more accurate inspection results, which can effectively improve the yield of glass panels.

[0032] Furthermore, such as Figure 1 , Figure 3 As shown, two LED light strips (i.e., light sources 350) are installed between the CCD camera 310 and the turntable 210. The two LED light strips are fixed to the mounting plate to provide illumination to the glass panel to be inspected from two different angles. Under such lighting conditions, the CCD camera 310 will not fail to accurately identify black spot defects on the glass panel due to glare or insufficient light, and can obtain clearer images, effectively improving the image recognition accuracy of the CCD camera 310.

[0033] To improve the efficiency of the robotic arm 410 of the gripping component 400 in gripping the glass panel, in one embodiment, such as Figure 1 , Figure 2 , Figure 4As shown, a rotating shaft 430 is mounted at the end of the robotic arm 410, and a rotating plate 440 is mounted on the rotating shaft 430. A suction cup 420 is mounted at each end of the rotating plate 440, allowing the robotic arm 410 to transfer two glass panels at once. Considering the size of the turntable 210 and the distance between the good product storage positions 710a on the good product storage tray 710, the distance between the two suction cups 420 should be chosen to allow two glass panels to be placed into the good product storage positions 710a simultaneously without bumping into them. In this embodiment, the distance between the two suction cups 420 is the width of the two glass panels, meaning the robotic arm 410 can simultaneously place two glass panels into the first and third, or second and fourth, good product storage positions 710a in the same row on the good product storage tray 710. This effectively improves the efficiency of the robotic arm 410 in transferring glass panels, thus improving overall inspection efficiency.

[0034] In one embodiment, such as Figure 1 , Figure 2 , Figure 5 As shown, a first station 600a and a second station 600b are sequentially arranged on the first conveyor belt 600 along its transmission direction. The second station 600b is located next to the gripping component 400 so that the robotic arm 410 can cover the second station 600b. The good product storage tray 710 is set on the second station 600b. The robotic arm 410 grips the good glass panel and transfers it to the good product storage tray 710 on the second station 600b. The first station 600a is located upstream of the first conveyor belt 600 in the transmission direction. Four support pillars 720 are mounted on the upper surface of the corresponding machine tool 100, respectively positioned on both sides of the first conveyor belt 600. Each support pillar 720 has a movable plate 721. The support pillars 720 and the movable plates 721 together form a storage tray placement position 720a above the first conveyor belt 600. When the movable plate 721 is open, the good product storage tray 710 can rest on it; when the movable plate 721 is retracted, the good product storage tray 710 falls onto the first conveyor belt 600, which can then transport the good product storage tray 710 to the second station 600b when needed. This effectively reduces the time required to replace the good product storage tray 710 when it is full, improving the testing efficiency of the device.

[0035] Furthermore, such as Figure 1 , Figure 2 , Figure 5 As shown, the tops of the four pillars 720 are tilted away from the storage tray placement position 720a to form guide bars 722. Due to the presence of guide bars 722, it is smoother to place the good product storage tray 710 into the storage tray placement position 720a, which can greatly reduce the situation where the good product storage tray 710 gets stuck.

[0036] like Figure 1 , Figure 2 , Figure 4, Figure 6 As shown, to improve the transfer speed of defective glass panels, in addition to using two suction cups 420 to grip the glass panels, two defective conveyor platforms 520 are provided on the upper surface of the machine base 100 between the gripping assembly 400 and the defective storage bracket 510. The defective conveyor platform has a groove 520a with a width matching the glass panel. This groove 520a communicates with the defective storage position 510a. A roller 522 and a second conveyor belt 523 sleeved on the roller are provided at the bottom of the groove 520a. The roller 522 is driven by a motor 521 installed at the bottom of the defective conveyor platform 520. Preferably, in this embodiment, the motor 521 and the roller 522 are connected by a belt through the power shaft of the motor 521 and the roller 522 to transmit power. Alternatively, transmission can also be achieved through common methods such as gears and chains. Defective glass panels are transferred by robotic arm 410 to the groove 520a of defective conveyor 520, and then by second conveyor belt 523 to the defective storage position 510a of defective storage rack 510. This speeds up the transfer of defective glass panels and improves the detection efficiency of the device.

[0037] like Figure 1 , Figure 2 , Figure 6 As shown, to store more defective glass panels within a limited space, the upper surface of the machine 100 is recessed in the area below the defective storage rack 510 to form a cavity 100a. A lifting platform 530 is installed in this cavity 100a, and the defective storage rack 510 is placed on the lifting platform 530. When no defective glass panels are placed in the defective storage rack 510, the lifting platform 530 is at its highest point, and the bottom of the defective storage rack 510 is flush with the bottom of the groove 520a. Defective glass panels are conveyed to the bottom of the defective storage rack 510. Then, the lifting platform 530 gradually descends, descending a corresponding distance after receiving each defective glass panel, and continues to receive the next defective glass panel until the defective storage rack 510 is full. In this way, space can be effectively utilized, making the storage of defective glass panels more organized and providing convenience for subsequent analysis of the causes of black spot defects. Furthermore, as... Figure 1 , Figure 2 , Figure 6 As shown, a handle 511 is provided on the upper surface of the defective product storage rack 510, which makes it easier for workers to pick up the defective product storage rack 510 filled with glass panels, reducing the difficulty of the work.

[0038] This invention provides a glass panel black spot detection device that replaces the manual sampling inspection of black spot defects after the screen printing stage in glass panel production. The device features a carrier assembly on the machine to receive the glass panels, with an AOI (Automated Optical Inspection) component next to it to detect the presence of black spots. A gripping component picks up good and defective glass panels after inspection. Next to the AOI component are a defective product storage component, a first conveyor belt, and a good product storage component on the first conveyor belt. This significantly reduces missed detections and improves inspection efficiency and yield.

[0039] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0040] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A glass panel black spot detection apparatus, characterized by, include: The machine (100), a carrier assembly (200) disposed on the upper surface of the machine (100) for receiving glass panels, an AOI inspection assembly (300) and a gripping assembly (400) fixed on the upper surface of the machine (100) and located next to the carrier assembly (200), a defective product storage assembly (500) disposed next to the gripping assembly (400), a first conveyor belt (600) disposed on the upper surface of the machine (100) and located next to the gripping assembly (400), and a good product storage assembly (700) disposed on the first conveyor belt (600); The AOI detection component (300) includes at least one CCD camera (310); The gripping assembly (400) includes a robotic arm (410) disposed on the upper surface of the machine base (100) and located next to the carrier assembly (200), and the end of the robotic arm (410) is provided with at least one suction cup (420) for gripping the glass panel. The good product storage assembly (700) includes a good product storage tray (710) movably disposed on the first conveyor belt (600), the good product storage tray (710) having a plurality of good product storage positions (710a); The defective product storage assembly (500) includes a defective product storage bracket (510) movably disposed on the upper surface of the machine (100), the defective product storage bracket (510) having a defective product storage position (510a).

2. The glass panel black spot detection apparatus according to claim 1, characterized in that, The vehicle assembly (200) includes a turntable (210) rotatably disposed on the upper surface of the machine base (100), and the turntable (210) has a plurality of glass panel placement positions (210a) around its rotation center.

3. The glass panel black spot detection apparatus according to claim 2, characterized in that, The AOI detection assembly (300) further includes a mounting plate (320) fixed vertically on the upper surface of the machine base (100) and located next to the carrier assembly (200), a slide rail (330) fixed on the mounting plate (320) and extending vertically, and a sliding plate (340) slidably disposed on the slide rail (330), wherein the CCD camera (310) is fixed on the sliding plate (340).

4. The glass panel black spot detection apparatus according to claim 3, characterized in that, The AOI detection assembly (300) also includes a light source (350) fixed to the mounting plate (320) and located between the CCD camera (310) and the turntable (210).

5. The glass panel black spot detection device according to claim 1, characterized in that, The robotic arm (410) has a rotating shaft (430) at its end, and a rotating plate (440) is fixedly connected to the rotating shaft (430). Each end of the rotating plate (440) has a suction cup (420).

6. The glass panel black spot detection device according to claim 1, characterized in that, The first conveyor belt (600) is provided with a first station (600a) and a second station (600b) located next to the gripping component in sequence along its transmission direction. The good product storage tray (710) is placed in the second station (600b). The good product storage component (700) also includes at least four pillars (720) extending vertically and fixed to the upper surface of the machine (100). The pillars (720) are located in the first station (600a). Each pillar (720) is provided with a movable plate (721). The pillars (720) and the movable plates (721) together form a storage tray placement position (720a) located above the first conveyor belt (600).

7. The glass panel black spot detection device according to claim 6, characterized in that, The top of the support (720) is inclined away from the storage tray placement position (720a) to form a guide bar (722).

8. The glass panel black spot detection device according to claim 1, characterized in that, The defective product storage assembly (500) further includes a defective product conveying platform (520) located beside the defective product storage bracket (510) and having a groove (520a) on its upper surface. The groove (520a) is connected to the defective product storage position (510a). The defective product conveying platform (520) is equipped with a motor (521), a plurality of rollers (522) driven by the motor (521) and located at the bottom of the groove (520a), and a second conveyor belt (523) sleeved on the rollers (522).

9. The glass panel black spot detection device according to claim 8, characterized in that, The upper surface of the machine (100) is recessed in the area below the defective product storage rack (510) to form a cavity (100a). The defective product storage assembly (500) also includes a lifting platform (530) disposed in the cavity (100a), and the defective product storage rack (510) is movably disposed on the lifting platform (530).

10. The glass panel black spot detection device according to claim 8, characterized in that, The upper surface of the defective product storage rack (510) is provided with a handle (511).

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