Glass ceramic multi-station automatic optical detection and sorting assembly line

Abstract

The invention relates to the technical field of glass ceramic detection, in particular to a multi-station automatic optical detection and sorting assembly line for glass ceramic. The production line comprises wind shear equipment, solvent scrubbing equipment, pure water flushing equipment, feeding arrangement equipment, detection equipment, discharging equipment and a conveying assembly which are modularly designed, wherein the conveying assembly is connected with the equipment and enables microcrystalline glass to pass through in sequence; the brushing assembly is used for brushing the surface of the microcrystalline glass; the cleaning assembly is used for cleaning the brushing assembly; and the water tank machine is used for filtering and recycling liquid for cleaning workpieces. Intelligent cleaning and multi-station detection are integrated, glass ceramics are integrally cleaned and detected, and the production and detection efficiency of the glass ceramics is improved.

Description

Technical Field

[0001] This invention relates to the field of microcrystalline glass inspection technology, and in particular to a multi-station automated optical inspection and sorting production line for microcrystalline glass. Background Technology

[0002] Glass-ceramics, a polycrystalline material made from base glass through controlled crystallization, combines the machinability of glass with the high strength, high heat resistance, and chemical stability of ceramics. However, during the preparation and processing of glass-ceramics, various impurities are easily adsorbed or left on its surface, such as particulate media used in grinding and particles falling from the grinding wheel, which affect the quality of the glass-ceramics. Therefore, it is necessary to clean and inspect the finished glass-ceramics to ensure that they can be put into use quickly.

[0003] Chinese patent CN118937215B discloses a surface uniformity detection system for microcrystalline glass, in which a control core can slide relative to a control cylinder. When the connecting hole connects the first and second mating grooves, the end of the control column away from the connecting tube abuts against a pad. When the first and second mating grooves are disconnected, the end of the control column away from the connecting tube abuts against the bottom of the groove. Before detection, the distance between the positioning arm and the microcrystalline glass to be tested is adjusted so that the contact end abuts against the surface of the microcrystalline glass and the connecting hole connects the first and second mating grooves. After detection begins, the distance between the positioning arm and the microcrystalline glass to be tested is kept constant, and the contact end moves along the surface of the microcrystalline glass to be tested, leaving an indicator line on the surface of the microcrystalline glass. The location where the indicator line is interrupted is the defect location. This system can accurately detect microcrystalline glass and precisely mark the defect location.

[0004] However, this technical solution only targets the uniformity of the bonding surface of the microcrystalline glass, and the detection technology is generally a single detection mode, resulting in an insufficiently comprehensive detection perspective. Microcrystalline glass also suffers from insufficient environmental control during the detection process and incomplete cleaning, which not only affects detection efficiency but also easily causes secondary contamination. Furthermore, the workflow lacks integration, failing to achieve integrated cleaning and quality inspection. Existing technologies are insufficient to meet the demands of efficient and comprehensive production inspection. To address these shortcomings, this invention aims to develop an automated production line integrating cleaning and optical inspection. Through multi-station collaboration, an intelligent water circulation system, multi-mode optical inspection, and environmental control, it achieves efficient, high-precision, and fully automated inspection of appearance defects in black microcrystalline glass. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a multi-station automated optical inspection and sorting line for microcrystalline glass. Through the combination of an intelligent cleaning structure and a multi-station inspection structure, it achieves fully automated cleaning and multi-dimensional inspection functions, solving the problems of single inspection mode, low inspection efficiency and accuracy, incomplete cleaning, easy generation of secondary pollution, and lack of flexibility and integration in the operation process in existing technologies.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a multi-station automatic optical inspection and sorting production line for microcrystalline glass, characterized in that it includes a modularly designed air-cutting device, a solvent washing device, a pure water rinsing device, a feeding and sorting device, an inspection device, a discharging device, and a conveying assembly that connects the above devices to allow the microcrystalline glass to pass through sequentially; Several sets of the air-cutting equipment used for drying and removing impurities from the surface of microcrystalline glass are respectively arranged in front of the solvent washing equipment, pure water rinsing equipment and material handling equipment. The solvent washing equipment is used for acid / alkali washing of microcrystalline glass, and includes one or more of acid washing stations or alkali washing stations. The pure water rinsing equipment is installed before the working station of the feeding and sorting equipment and is used to clean the surface of the microcrystalline glass of residual brushing solution and impurities from the previous process. The feeding and sorting equipment is used for sorting and positioning of microcrystalline glass before inspection. The detection equipment is used for defect detection in microcrystalline glass; The feeding equipment sorts and feeds materials according to the detection results of the detection equipment; After being fed into the microcrystalline glass, the impurities adhering to the surface of the microcrystalline glass are removed by solvent washing equipment and pure water rinsing equipment. After being positioned and sorted by the feeding and sorting equipment, it is transferred to the detection equipment for fully automatic detection of defects in the microcrystalline glass. The unloading equipment sorts and unloads the detected microcrystalline glass according to the detection results.

[0007] Preferably, the testing equipment includes a front half-bright field testing station, a front dark field testing station, a back dark field testing station, and a thickness measurement station; The front half-bright field inspection station is equipped with a high-brightness line light source and a line scan camera to inspect the front of the microcrystalline glass and highlight the concave and convex defects of the microcrystalline glass. The front dark field detection station is equipped with a high-brightness line light source and a line scan camera for detecting scratches and abrasions on the front of the microcrystalline glass. The back-side dark field inspection station is equipped with a high-brightness line light source and a line scan camera for detecting back-side defects; The thickness measurement station is equipped with a laser rangefinder sensor to monitor thickness changes in real time.

[0008] Preferably, the feeding and sorting equipment includes a fan filter unit and a width sorting mechanism. The fan filter unit is disposed above the width sorting mechanism to remove impurities from the surface of the microcrystalline glass entering the detection area.

[0009] Using the above testing methods and standard defect samples, the results showed a defect detection rate of 99.2%, a thickness measurement accuracy within 0.02 mm, and a false detection rate of less than 0.5%.

[0010] Preferably, the air cutting equipment includes a first air cutting station located before the solvent washing equipment, a second air cutting station located inside the solvent washing equipment, a third air cutting station located before the pure water rinsing equipment, and a fourth air cutting station located after the pure water rinsing equipment. The air cutting device further includes at least one set of powerful air knives arranged perpendicular to the microcrystalline glass conveying direction and powerful air knives arranged inclined relative to the microcrystalline glass conveying direction; and a water collection tank located below the powerful air knives.

[0011] Preferably, the cleaning cylinder comprises: The base has a hollow liquid storage cavity. A cover plate is provided on the side of the base facing the brush roller and is connected by fasteners; The drain section, a plurality of the drain sections are spirally connected to the base and the cover plate, and one end of the drain section is connected to the cover plate; The cleaning section is located on the inner wall of the cover plate and is used to clean the brush bristles.

[0012] Preferably, the middle part of the drainage section is provided with a through drainage channel, and several vertical channels are provided around the drainage channel; The drain section is also provided with an air outlet, which is connected to the vertical channel and the drain channel and is arranged in several ways inclined downward toward the drain channel; The top outer diameter surface of the drain section is provided with an annular channel, which is connected to the air inlet channel, so that the vertical channels of several drain sections are all connected to the air inlet channel.

[0013] Preferably, an air inlet channel is provided on one side of the base, and an air inlet channel is opened on the upper surface of the base. When the cover plate and the base are closed, the air inlet channel forms a closed gas flow space. The air inlet channel includes a transverse channel connecting several annular channels and an end face channel connecting several transverse channels. The air inlet channel is connected to the end face channel.

[0014] Preferably, the cleaning unit includes: Conical protrusions, several of which are provided at both ends of the cover plate, are used for pre-treating the bristles; The distributing protrusions are spirally arranged along the axial direction of the cleaning cylinder between adjacent drainage channels in the middle of the cover plate, and their outlines are diamond-shaped. The distributing protrusions have a liquid outlet facing the axis of the cleaning cylinder, and the liquid outlet is connected to the liquid storage cavity. The length direction of the distributing protrusions is arranged perpendicular to the spiral outline of the bristles.

[0015] The beneficial effects of this invention are as follows: (1) This invention integrates the air cutting equipment, solvent washing equipment, pure water rinsing equipment, feeding and sorting equipment, testing equipment and unloading equipment in sequence according to the process flow to form an automated testing line that integrates intelligent cleaning and multi-station testing. This achieves seamless integration of microcrystalline glass cleaning and multi-dimensional testing, solves the problems of traditional operation process dispersion and poor integration, and improves the production and testing efficiency of microcrystalline glass.

[0016] (2) The present invention uses a solvent brushing equipment with acid and alkali dual-station step-by-step cleaning design, combined with the interleaved layout of three-stage pure water rinsing station and multiple sets of air cutting station to specifically remove inorganic impurities, organic pollutants and residual brushing solution from the surface of microcrystalline glass. At the same time, with the help of the multi-angle water spraying device and the synergistic effect of the brush roller, it ensures that there are no dead corners and no residues in the cleaning, effectively avoiding secondary pollution.

[0017] (3) This invention optimizes different defects through multiple lighting modes. The detection equipment integrates four stations: front half-bright field, front dark field, back dark field detection and thickness measurement, realizing comprehensive coverage detection of defects and thickness indicators on both sides of microcrystalline glass, and solving the defects of traditional single detection mode such as incomplete angle and insufficient accuracy.

[0018] (4) By setting up an FFU device and a dust adsorption module, the present invention creates a dust-free and stable working environment, effectively reducing the interference of dust and foreign objects on the test results. At the same time, the accurate positioning of the width sorting mechanism and the automatic classification and collection of the unloading equipment ensure the accuracy of the test and operation.

[0019] (5) By setting up the brush washing component, the present invention realizes the combination of multi-process spray brush washing, which improves the efficiency and effect of removing impurities from the glass surface. At the same time, the setting up of the cleaning component realizes the online cleaning of impurities trapped in the brush bristles, improves the cleanliness of the brush washing roller, and avoids impurities trapped in the brush bristles from causing secondary damage to the glass surface.

[0020] (6) By setting conical protrusions and splitting protrusions, the present invention first uses conical protrusions to peel the impurities trapped in the bristles outwards, and splitting protrusions to split the bristles to both sides, so that the impurities trapped inside the bristles can be exposed. The bristles are then rinsed with high-pressure cleaning liquid. The cleaned liquid carries the impurities out through the drainage channel, preventing the impurities from adhering to the bristles again, thus solving the problem that existing rinsing methods cannot clean the impurities inside the bristles.

[0021] (7) The present invention sets the bristles perpendicular to the length direction of the splitting protrusions, so that the bristles are fully split during the movement of the splitting protrusions, thereby improving the cleaning efficiency.

[0022] (8) By setting an inclined downward air outlet, the present invention allows the airflow to be blown into the drain channel from the vertical channel. The high-speed airflow can not only create a negative pressure environment inside and outside the cleaning cylinder, but also quickly carry the cleaning waste liquid and impurities outward, improve the discharge efficiency of the cleaning liquid, maintain the clean state inside the cleaning cylinder, and improve the glass output rate.

[0023] (9) This invention achieves efficient recycling of cleaning water resources by combining a multi-stage filtration and intelligent monitoring water circulation filtration device, which reduces water consumption and ensures the cleanliness of cleaning water through real-time water quality monitoring.

[0024] In summary, this invention has the advantages of high integration, thorough cleaning, comprehensive and accurate detection, energy saving and environmental protection, and stable and reliable operation. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal cross-section of the overall structure of the present invention; Figure 3 This is a schematic diagram of the internal structure of the solvent brushing device of the present invention; Figure 4 This is a schematic diagram of the internal structure of the detection device of the present invention; Figure 5 This is a schematic diagram of the brush roller structure of the present invention; Figure 6 This is a schematic diagram of the overall cleaning component of the present invention; Figure 7 This is a schematic diagram of the cross-section of the cleaning component of the present invention; Figure 8 This is a schematic diagram of the drainage section structure of the present invention; Figure 9 This is a schematic diagram of the interior of the cleaning component base of the present invention; Figure 10 This is a schematic diagram illustrating the airflow and liquid flow directions of the present invention; Figure 11 For the present invention Figure 7 Enlarged view of a portion; Figure 12 This is a schematic diagram of the water tank machine of the present invention.

[0026] Figure Labels 1. Air cutting equipment; 11. First air cutting station; 12. Second air cutting station; 13. Third air cutting station; 14. Fourth air cutting station; 2. Solvent washing equipment; 21. Acid washing station; 22. Alkali washing station; 3. Pure water rinsing equipment; 31. First pure water rinsing station; 32. Second pure water rinsing station; 33. Third pure water rinsing station; 4. Material feeding and sorting equipment; 41. Fan filter unit; 42. Width sorting mechanism; 5. Inspection equipment; 51. Front semi-bright field inspection station; 52. Front dark field inspection station; 53. Back dark field inspection station; 54. Thickness measurement station; 6. Unloading equipment; 7. Conveying assembly; 71. Guide roller; 8. Washing assembly; 81. Brush roller; 9. Cleaning assembly; 91. Cleaning cylinder; 911. Base; 9111. Air inlet channel; 9112. Air inlet channel; 91121. Horizontal channel; 91122. End face channel; 912. Cover plate; 913. Liquid storage chamber; 914. Drainage section; 9141. Drainage channel; 9142. Vertical channel; 9143. Air outlet; 9144. Annular channel; 915. Cleaning section; 9151. Conical protrusion; 9152. Dividing protrusion; 91521. Liquid outlet; 92. Guide rod; 93. Drive component; 10. Water tank machine; 101. Clean water tank; 102. Primary filter assembly; 103. Secondary filter assembly; 104. Circulation system. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0029] Example 1 like Figures 1-4 As shown, this embodiment provides a multi-station automated optical inspection and sorting production line for microcrystalline glass, including a modularly designed air-cutting device 1, a solvent washing device 2, a pure water rinsing device 3, a feeding and sorting device 4, an inspection device 5, a unloading device 6, and a conveying assembly 7 that connects the above devices to allow the microcrystalline glass to pass through sequentially. It should be noted that the modular design of each station allows for the disassembly and reconfiguration of different stations, facilitating maintenance and upgrades. For example, the solvent washing station can switch between acidic and alkaline solvents to adapt to different types of contamination. The conveying assembly 7 uses guide rollers 71 for conveying, and the guide rollers 71 are fitted with non-metallic support components for shock absorption and support, reducing damage to the glass surface. Several sets of the air-cutting equipment 1 used for drying and removing impurities from the surface of microcrystalline glass are set up and interspersed before the work stations of solvent washing equipment 2, pure water rinsing equipment 3 and material feeding and sorting equipment 4. The solvent washing equipment 2 is used for acid / alkali washing of microcrystalline glass, and includes one or more of acid washing station 21 or alkali washing station 22. The pure water rinsing device 3 is set before the working station of the feeding and sorting device 4 and is used to clean the brushing solution and impurities remaining in the previous process on the surface of the microcrystalline glass. The feeding and sorting equipment 4 is used for sorting and positioning of microcrystalline glass before inspection. The detection device 5 is used for defect detection of microcrystalline glass; The feeding device 6 sorts and feeds materials according to the detection results of the detection device 5; After the microcrystalline glass is fed, it is washed by solvent brushing equipment 2 and pure water rinsing equipment 3 to remove impurities adhering to the surface of the microcrystalline glass. After being positioned and sorted by feeding and sorting equipment 4, it is transferred to the detection equipment 5 for fully automatic detection of defects in the microcrystalline glass. The unloading equipment 6 sorts and unloads the microcrystalline glass according to the detection results.

[0030] This invention employs a modular design that allows for rapid adjustments to adapt to changing production needs. The workstations can be disassembled and recombined to simplify maintenance. An integrated human-machine interface (see subsequent supplement) enables remote monitoring and reduces operational complexity.

[0031] It should be noted that the acid solution in the acid washing station 21 is usually a mixture of hydrochloric acid, nitric acid and hydrofluoric acid, which can chemically react with the inorganic impurities on the surface of the microcrystalline glass to generate soluble salts, thereby removing these impurities that affect the surface smoothness and performance.

[0032] The alkaline solution in the alkaline washing station 22 is usually sodium hydroxide or potassium hydroxide solution, which has strong saponification and emulsification capabilities. It can react with the organic pollutants remaining on the surface of the microcrystalline glass to generate water-soluble soaps or emulsion products, thereby thoroughly removing organic impurities.

[0033] The unloading device 6 classifies the measured glass into qualified and unqualified products based on the detection results of the automatic optical inspection machine for microcrystalline glass. When the sensor detects the presence of glass, the high-precision lifting mechanism places the microcrystalline glass on both sides according to the detection results. The unloading device 6 also has a dust adsorption module inside to ensure that there is no dust or foreign matter inside the equipment.

[0034] The testing equipment 5 includes a front half-bright field testing station 51, a front dark field testing station 52, a back dark field testing station 53, and a thickness measurement station 54. The front-side semi-bright-field inspection station 51 is equipped with a high-brightness line light source and a line scanning camera to inspect the front of the microcrystalline glass, highlighting its surface defects. These defects include oxalic acid stains, incomplete polishing due to poor polishing, whitening due to poor polishing, pitting, pores, crystallization defects such as stones and lines, large chipped edges, and C-shaped missing corners. Due to the line light source and the spatial relationship between the microcrystalline glass under test and the line scanning camera, surface defects such as pitting, pores, stones, and lines are exceptionally prominent. The front dark field detection station 52 is equipped with a high-brightness line light source and a line scan camera for detecting scratches and abrasions on the front of the microcrystalline glass. The back dark field inspection station 53 is equipped with a high-brightness line light source and a line scan camera to detect back defects; such defects include oxalic acid stains, crystallized stones, bubbles, dirt, and internal air bubbles.

[0035] The thickness measurement station 54 is equipped with a laser rangefinder sensor to monitor thickness changes in real time. The laser rangefinder sensor can achieve a high-precision detection accuracy of 0.02mm, identifying process problems such as poor polishing.

[0036] Furthermore, proximity sensors are installed at each of the four testing stations. Once the sensors detect the glass, a high-precision motor smoothly transports the microcrystalline glass to be tested to the four testing stations.

[0037] Furthermore, the pattern identified by the line scan camera of the present invention is compared and analyzed with a standard sample after image processing and machine learning to determine whether there are defects, and the data is fed back and displayed. The specific identification scheme is the prior art, and the detailed principle will not be described in this application.

[0038] Example 2 like Figure 1 As shown, components that are the same as or corresponding to those in Embodiment 1 are referred to using the same reference numerals as in Embodiment 1. For simplicity, only the differences from Embodiment 1 are described below. The difference between Embodiment 2 and Embodiment 1 is as follows: In this embodiment, the feeding and sorting equipment 4 includes a fan filter unit 41 and a width sorting mechanism 42. The fan filter unit 41 is disposed above the width sorting mechanism 42 to remove impurities from the surface of the microcrystalline glass to be tested.

[0039] It should be noted that the fan filter unit 41, i.e. the FFU device, can provide strong vertical fresh air, form a stable unidirectional airflow, and ensure a clean testing environment for the microcrystalline glass. Specifically, the width sorting mechanism 42 uses an outside-to-inside clamping and sorting method to sort the microcrystalline glass on the conveying component 7, so that the microcrystalline glass is placed in the center position of the conveying component 7; after the width sorting mechanism 42 detects the glass through the sensor on the sorting mechanism, the high-precision motor transports the microcrystalline glass to be tested to the center position, and then the width sorting mechanism 42 clamps and sorts the glass. After sorting, the conveyor rollers continue to transport the microcrystalline glass to be tested forward.

[0040] Meanwhile, the testing device 5 is also equipped with a dust adsorption module to prevent impurities in the air from adsorbing onto the glass surface after cleaning and affecting the test results. This ensures that there are no dust or foreign objects inside the testing device, further reducing the impact of dust in the air on the test results and greatly reducing the false detection rate.

[0041] Using the above testing methods, standard defect samples containing scratches, abrasions, and pores were tested. The results showed a defect detection rate of 99.2%, a thickness measurement accuracy within 0.02 mm, and a false detection rate of less than 0.5%.

[0042] The air cutting equipment 1 includes a first air cutting station 11 set before the solvent washing equipment 2, a second air cutting station 12 set inside the solvent washing equipment 2, a third air cutting station 13 set before the pure water rinsing equipment 3, and a fourth air cutting station 14 set after the pure water rinsing equipment 3. The air cutting device 1 further includes at least one set of powerful air knives arranged perpendicular to the microcrystalline glass transmission direction and powerful air knives arranged inclined relative to the microcrystalline glass transmission direction; and a water collection tank located below the powerful air knives.

[0043] It should be noted that there is one water level sensor in the cleaning tank, and at least one water outlet at the bottom of the tank. After being filtered through at least two filters, the filtered cleaning water reaches the bottom clean water tank, which contains a water level sensor and a water quality sensor. The water level sensor monitors the water level, while the quality sensor monitors suspended solids and the pH value of the water. The filtered cleaning water is discharged and connected to a second pure water rinsing machine for recirculation. The tank also has an air inlet; the gas passes through a filter, a water-oil separator, and a desiccant before being recycled.

[0044] The air-cutting device 1 not only has vertical and inclined high-power air knives to dry the residual water on the microcrystalline glass at multiple angles, but also removes dust and debris from the surface of the microcrystalline glass. In particular, the fourth air-cutting station 14 is an air-knife drying station, which uses high-speed laminar flow air to quickly dry the residual moisture on the surface of the microcrystalline glass, leaving no water marks, so that the microcrystalline glass entering the testing equipment remains dry.

[0045] Example 3 like Figures 5-11 As shown, components that are the same as or corresponding to those in Embodiment 1 are referred to using the same reference numerals as in Embodiment 1. For simplicity, only the differences from Embodiment 1 are described below. The difference between Embodiment 2 and Embodiment 1 is as follows: A multi-station automated optical inspection and sorting production line for microcrystalline glass further includes a brushing assembly 8 for brushing the surface of the microcrystalline glass. The brushing assembly is disposed between adjacent rollers of the conveying assembly 7 to brush the surface of the microcrystalline glass. The brushing assembly 8 includes: several sets of brush rollers 81 rotatably disposed on the conveying assembly 7. Each brush roller 81 is provided with a cleaning brush, and the bristles of the cleaning brush are arranged in a spiral shape along the axial direction of the brush roller 81.

[0046] It should be noted that the brushing assembly 8 is installed at the acid brushing station 21, the alkaline brushing station 22, the first pure water rinsing station 31, and the second pure water rinsing station 32 to brush the surface of the microcrystalline glass and improve the surface cleaning quality. At least two sets of brushing assemblies 8 are installed at each station.

[0047] It also includes a cleaning component 9 for cleaning the brushing component 8; the cleaning component 9 is sleeved on the brush roller 81 and moves back and forth along the axial direction of the brush roller 81 to thoroughly clean the impurities trapped in the brush bristles. It should be noted that during the production of microcrystalline glass, factors such as grinding auxiliary particles and particles falling off the grinding head may cause these particles to adhere to the surface of the microcrystalline glass. During the cleaning process, these adhered particles fall off with the cleaning brush roller, and some particles become trapped inside the brush roller. Over a long period of time, these particle impurities may cause secondary scratches on the surface of the microcrystalline glass, thus affecting the quality of the glass.

[0048] The cleaning component 9 includes: The cleaning cylinder 91 is configured as a semi-cylindrical shape and is sleeved under the brush roller. This structure can simultaneously clean the brush roller bristles during the glass inspection process, and can complete the brush roller cleaning without interrupting the inspection process, so that the brush roller is always kept clean to clean the surface of the microcrystalline glass.

[0049] Guide rod 92, the guide rod 92 is provided on both sides of the cleaning cylinder 91, and is used to guide the cleaning cylinder 91 to move back and forth along the brush roller axis; The cleaning cylinder 91 is connected to the driving component 93 at its bottom. Specifically, the driving component 93 is driven by a motor screw, and the bottom of the cleaning cylinder 91 is provided with a connecting plate that is connected to the screw via a threaded connection.

[0050] The cleaning cylinder 91 includes: Base 911, wherein a hollow liquid storage cavity 913 is provided on the base 911; A cover plate 912 is provided on the side of the base 911 facing the brush roller and is connected by fasteners. The drain section 914, a plurality of the drain sections 914 are spirally connected to the base 911 and the cover plate 912, one end of the drain section 914 is connected to the cover plate 912, and the cover plate 912 is used to drain the cleaning liquid carrying impurities.

[0051] The drain section 914 has a through drain channel 9141 in the middle, and several vertical channels 9142 are arranged around the drain channel 9141. The drain section 914 is also provided with an air outlet 9143. The air outlet 9143 connects the vertical channel 9142 and the drain channel 9141 and is arranged in a plurality of them inclined downward toward the drain channel 9141, so that the airflow is blown into the drain channel 9141 from the vertical channel 9142 inclined downward, thereby improving the discharge efficiency of the cleaning liquid by means of the airflow speed. The top outer diameter surface of the drain section 914 is provided with an annular channel 9144, which is connected to the air inlet channel 9112, so that the vertical channels 9142 of several drain sections 914 are all connected to the horizontal channels 91121.

[0052] One side of the base 911 is provided with an air inlet channel 9111, and the upper surface of the base 911 is provided with an air inlet channel 9112. When the cover plate 912 and the base 911 are closed, the air inlet channel 9112 forms a closed gas flow space. The air inlet channel 9112 includes a transverse channel 91121 that connects several annular channels 9144 and an end face channel 91122 that connects several transverse channels 91121. The air inlet channel 9111 is connected to the end face channel 91122.

[0053] It should be noted that the air inlet channel 9111 is connected to compressed air. The high-pressure air passes through the air inlet channel 9111, the end face channel 91122, the horizontal channel 91121, the vertical channel 9142 and the air outlet 9143 in sequence, so that a negative pressure is formed in the drain channel 9141, which quickly discharges the cleaning fluid and impurities after rinsing inside the cleaning cylinder 91.

[0054] As shown in the figure, an odd number of vertical channels 9142 are arranged circumferentially along the drainage channel 9141; preferably, three are arranged, so that the three airflows act downwards simultaneously without interference. The concentrated downward impact of the airflow creates a negative pressure environment inside and outside the cleaning cylinder 91, which can quickly carry away cleaning waste liquid and impurities and discharge them outwards. This structure improves the speed and efficiency of drainage, reduces the residue of impurities and waste liquid, maintains the cleanliness of the inside of the cleaning cylinder 91, and improves the glass yield.

[0055] The cleaning unit 915 includes: Conical protrusions 9151 are provided at both ends of the cover plate 912. The conical protrusions 9151 are used to pre-treat the brush bristles. When the brush bristles of the brush roller enter the cleaning cylinder 91, the brush bristles first contact the conical protrusions 9151. The tips of the conical protrusions 9151 can push the brush bristles apart, pick up and loosen the impurities at the base of the brush bristles, and bring up the impurities at the bottom. Distributing protrusions 9152 are provided on the cover plate 912, and several are spirally arranged along the axial direction of the cleaning cylinder 91, located between adjacent drainage channels 9141, with a rhomboid outline; each distributing protrusion 9152 has a through-hole 91521 at its center, which connects to the liquid storage chamber 913, and the discharge direction is as follows. Figure 10As shown, a high-pressure water jet is sprayed in the axial direction; the length direction of the splitting protrusion 9152 is set perpendicular to the spiral outline of the bristles; the splitting protrusion 9152 splits the bristles to both sides, and the high-pressure cleaning fluid in the outlet 91521 washes the split bristles, and the impurities mixed in the bristles are discharged along the drain channel 9141 with the cleaning fluid.

[0056] When the brush roller rotates, the drive unit 93 drives the cleaning cylinder 91 to move back and forth. The conical protrusion 9151 first removes the impurities at the bottom of the brush bristles, and then the separating protrusion 9152 separates the brush bristles to both sides. The high-pressure cleaning fluid in the outlet 91521 rinses the separated brush bristles, and the impurities trapped between the brush bristles are quickly discharged along the drain channel 9141 by the negative pressure of the airflow.

[0057] The positions of the four adjacent bristle protrusions 9152 form a diamond shape. It should be noted that this arrangement ensures that the bristle protrusions 9152 can fully cover the area of ​​the brush bristles, improving the thoroughness of cleaning and preventing areas that are not covered by the bristle protrusions 9152 from becoming cleaning dead spots.

[0058] Example 4 like Figure 12 As shown, components that are the same as or corresponding to those in Embodiment 1 are referred to using the same reference numerals as in Embodiment 1. For simplicity, only the differences from Embodiment 1 are described below. The difference between Embodiment 3 and Embodiment 1 is as follows: The pure water rinsing equipment 3 includes a first pure water rinsing station 31, a second pure water rinsing station 32, and a third pure water rinsing station 33. Each of the three stations is equipped with a water tank machine 10, which filters, recycles, and reuses the liquid used for cleaning the workpieces.

[0059] It should be noted that the sink machine 10 is an independent unit that can be disassembled and reassembled. The water tank machine 10 is located below the solvent washing equipment 2 and the pure water rinsing equipment 3, and includes a clean water tank 101, a primary filter assembly 102 and a secondary filter assembly 103 located above the clean water tank 101, and a circulation system 104 for water circulation.

[0060] The primary filtration component 102 is preferably a filter screen, and the secondary filtration component 103 is preferably a porous filter rod.

[0061] Specifically, the water tank machine 10 has an inlet at the top, and is equipped with several vertical and inclined rinsing water pipes. There are no fewer than two water level sensors inside the cleaning tank, and no fewer than two water outlets at the bottom of the cleaning tank. After being filtered by no fewer than three filter screens and no fewer than two porous filter rods, the filtered cleaning water reaches the bottom clean water tank. The clean water tank is equipped with a water level sensor, a water quality sensor, a temperature sensor, and a heating element. The water level sensor is responsible for monitoring the water level, the water quality sensor is responsible for monitoring suspended solids and the pH value of the water, the temperature sensor is responsible for detecting the water temperature, and the heating element is responsible for heating the cleaning solution.

[0062] The filtered cleaning water can be circulated separately within the tank, or it can be discharged and then circulated together with the filter and other tanks. When circulating separately within the tank, the filtered cleaning water is drawn by a small pump at the bottom, passes through a pressure sensor, and reaches the inlet to complete the water circulation and reuse. When circulating together, the filtered cleaning water is piped to the filter, pumped by a pump, passes through a pressure sensor, and reaches the inlet of the tank to complete the water circulation and reuse.

[0063] It should be noted that the first pure water rinsing station 31 and the second pure water rinsing station 32 use spraying and brushing / roller washing methods to clean with pure water, thereby improving the cleaning effect of surface residues; the third pure water rinsing station 33 uses high-pressure pure water cleaning to further remove surface residues and improve the cleaning quality.

[0064] The water circulation filtration device enables efficient recycling of cleaning water resources, reducing water consumption.

[0065] Meanwhile, a multi-stage filtration and circulation system ensures the purity of the cleaning water; water quality sensors monitor in real time to prevent the introduction of impurities; and the solvent washing station can neutralize acidic and alkaline solvents to avoid glass corrosion.

[0066] Work steps Step 1: Loading and Pre-treatment: The microcrystalline glass is transported from the glass carrier to the loading station by a robotic arm or manually. Then it enters the first air cutting station 11 for multi-angle blowing to remove dust and debris from the glass surface and complete the pre-treatment operation. Step 2, Solvent washing: The solvent washing equipment 2 uses a multi-angle adjustable water spray device to wash the surface with brush roller 81. First, it passes through the acid washing station 21 to remove inorganic contaminants; then it passes through the second air cutting station 12 to blow away residual acid and impurities on the surface, and then enters the alkaline washing station 22 to remove organic contaminants on the surface, achieving comprehensive cleaning. Step 3, Pure Water Rinsing and Drying: After brushing, the microcrystalline glass first passes through the third air-cutting station 13 for preliminary cleaning, and then enters the pure water rinsing equipment 3; it passes through the first, second and third pure water rinsing stations in sequence to gradually remove residual acid and alkali solutions and reaction products on the surface, neutralize the acidity and alkalinity, and ensure that the glass surface is clean and free of residue; during this period, the guide roller 71 guides the glass to be transported smoothly to ensure the uniformity of rinsing, and then enters the fourth air-cutting station 14 to dry the residual moisture on the surface of the microcrystalline glass.

[0067] Step 4, Material Loading and Arranging: After drying, the microcrystalline glass enters the material loading and arranging equipment 4. The width arranging mechanism 42 identifies the glass position through sensors, and a high-precision motor transports the glass to the middle position and clamps it for arranging. Then, it is transported to the detection area by the assembly line rollers.

[0068] Step 5, Multi-dimensional Inspection: The prepared microcrystalline glass is then sequentially inspected at each station of the inspection equipment 5.

[0069] Step 6, Material Unloading, Sorting and Receiving: After the inspection is completed, the microcrystalline glass is transported to unloading equipment 6; the equipment identifies the glass through sensors, and combined with the inspection results, the high-precision lifting mechanism places qualified and unqualified products into the corresponding areas respectively.

[0070] Step 7, Auxiliary Equipment Maintenance: During solvent washing and pure water rinsing, the cleaning component 9 moves back and forth along the axis of the brush roller 81 through the cleaning cylinder 91 to clean, so that the brush roller 81 is always kept clean; the water tank machine 10 set under the equipment that needs to be rinsed uses a primary filter screen component 102 and a secondary porous filter rod 103 to perform multi-stage filtration of the cleaning wastewater, so as to realize the separate circulation or centralized neutralization and recycling of the clean water. The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A multi-station automated optical inspection and sorting production line for microcrystalline glass, characterized in that, It includes modularly designed air-cutting equipment, solvent washing equipment, pure water rinsing equipment, feeding and sorting equipment, testing equipment, unloading equipment, and conveying components that connect the above equipment to allow the microcrystalline glass to pass through in sequence; Several sets of air-cutting equipment for drying and removing impurities from the surface of microcrystalline glass are set up and interspersed before the work stations of solvent washing equipment, pure water rinsing equipment and material handling equipment. The solvent washing equipment is used for acid / alkali washing of microcrystalline glass, and includes one or more of acid washing stations or alkali washing stations. The pure water rinsing equipment is installed before the working station of the feeding and sorting equipment and is used to clean the surface of the microcrystalline glass of residual brushing solution and impurities from the previous process. The feeding and sorting equipment is used for sorting and positioning of microcrystalline glass before inspection. The detection equipment is used for defect detection in microcrystalline glass; The feeding equipment sorts and feeds materials according to the detection results of the detection equipment; After being fed into the microcrystalline glass, the impurities adhering to the surface of the microcrystalline glass are removed by solvent washing equipment and pure water rinsing equipment. After being positioned and sorted by the feeding and sorting equipment, it is transferred to the detection equipment for fully automatic detection of defects in the microcrystalline glass. The unloading equipment sorts and unloads the detected microcrystalline glass according to the detection results.

2. The automated optical inspection and sorting line for microcrystalline glass at multiple stations according to claim 1, characterized in that, The testing equipment includes a front half-bright field testing station, a front dark field testing station, a back dark field testing station, and a thickness measurement station; The front half-bright field inspection station is equipped with a high-brightness line light source and a line scan camera to inspect the front of the microcrystalline glass and highlight the concave and convex defects of the microcrystalline glass. The front dark field detection station is equipped with a high-brightness line light source and a line scan camera for detecting scratches and abrasions on the front of the microcrystalline glass. The back-side dark field inspection station is equipped with a high-brightness line light source and a line scan camera for detecting back-side defects; The thickness measurement station is equipped with a laser rangefinder sensor to monitor thickness changes in real time.

3. The automated optical inspection and sorting production line for microcrystalline glass at multiple stations according to claim 1, characterized in that, The feeding and sorting equipment includes a fan filter unit and a width sorting mechanism. The fan filter unit is located above the width sorting mechanism to remove impurities from the surface of the microcrystalline glass entering the detection area.

4. The automated optical inspection and sorting production line for microcrystalline glass at multiple stations according to claim 1, characterized in that, The air cutting equipment includes a first air cutting station set before the solvent washing equipment, a second air cutting station set inside the solvent washing equipment, a third air cutting station set before the pure water rinsing equipment, and a fourth air cutting station set after the pure water rinsing equipment. The air cutting device further includes at least one set of powerful air knives arranged perpendicular to the microcrystalline glass conveying direction and powerful air knives arranged inclined relative to the microcrystalline glass conveying direction; and a water collection tank located below the powerful air knives.

5. A multi-station automated optical inspection and sorting production line for microcrystalline glass according to any one of claims 1-4, characterized in that, It also includes a brushing assembly for brushing the surface of the microcrystalline glass. The brushing assembly is disposed between adjacent rollers of the conveying assembly to brush the surface of the microcrystalline glass. The brushing assembly includes: a plurality of brush rollers rotatably disposed on the conveying assembly. Each brush roller is provided with a cleaning brush, and the bristles of the cleaning brush are arranged in a spiral shape along the axial direction of the brush roller.

6. The automated optical inspection and sorting line for microcrystalline glass at multiple stations according to claim 5, characterized in that, It also includes a cleaning component for cleaning the brushing component; the cleaning component is sleeved below the brush roller and moves back and forth along the brush roller axis to thoroughly clean the impurities trapped in the bristles; The cleaning components include: A cleaning cylinder, which is semi-circular and fitted under the brush roller; Guide rods are provided on both sides of the cleaning cylinder to guide the cleaning cylinder to reciprocate along the brush roller axis; And a driving component, wherein the bottom of the cleaning cylinder is connected to the driving component in a transmission manner.

7. The automated optical inspection and sorting production line for microcrystalline glass at multiple stations according to claim 6, characterized in that, The cleaning cylinder includes: The base has a hollow liquid storage cavity. A cover plate is provided on the side of the base facing the brush roller and is connected by fasteners; The drain section, a plurality of the drain sections are spirally connected to the base and the cover plate, and one end of the drain section is connected to the cover plate; The cleaning section is located on the inner wall of the cover plate and is used to clean the brush bristles.

8. The automated optical inspection and sorting production line for microcrystalline glass at multiple stations according to claim 7, characterized in that, The drain section has a through drain channel in the middle, and several vertical channels are arranged around the drain channel. The drain section is also provided with an air outlet, which is connected to the vertical channel and the drain channel and is arranged in several ways inclined downward toward the drain channel; The top outer diameter surface of the drain section is provided with an annular channel, which is connected to the air inlet channel, so that the vertical channels of several drain sections are all connected to the air inlet channel.

9. A multi-station automated optical inspection and sorting production line for microcrystalline glass according to claim 8, characterized in that, An air inlet channel is provided on one side of the base, and an air inlet channel is opened on the upper surface of the base. When the cover plate and the base are closed, the air inlet channel forms a closed gas flow space. The air inlet channel includes a transverse channel that connects several annular channels and an end face channel that connects several transverse channels. The air inlet channel is connected to the end face channel.

10. A multi-station automated optical inspection and sorting production line for microcrystalline glass according to claim 8, characterized in that, The cleaning unit includes: Conical protrusions, several of which are provided at both ends of the cover plate, are used for pre-treating the bristles; The distributing protrusions are spirally arranged along the axial direction of the cleaning cylinder between adjacent drainage channels in the middle of the cover plate, and their outlines are diamond-shaped. The distributing protrusions have a liquid outlet facing the axis of the cleaning cylinder, and the liquid outlet is connected to the liquid storage cavity. The length direction of the distributing protrusions is arranged perpendicular to the spiral outline of the bristles.

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