Intelligent production line operation rate monitoring system in thin film solar cell production

Abstract

The application provides a kind of intelligent production line operation rate monitoring system in thin-film solar cell production, which solves the problem of poor glass yield statistics effect, etc., comprising a discharge table body, a transmission assembly is arranged on the discharge table body, a contact detection assembly is arranged between the transmission assembly and the discharge table body, an optical detection assembly opposite to the transmission assembly is installed above the discharge table body, a distribution assembly is arranged at the outlet of the discharge table body, and monitoring assemblies are respectively arranged at the inlet and outlet of the discharge table body. The application has the advantages of stable operation, good detection effect, etc.

Description

Technical Field

[0001] This invention belongs to the technical field of solar cell production and testing equipment, specifically relating to an intelligent production line utilization rate monitoring system in thin-film solar cell production. Background Technology

[0002] Under the premise of vigorously promoting a green economy, increasing the production of thin-film solar cells is an important means to achieve energy transition. Intelligent production lines, relying on their high degree of informatization and automation, can achieve functions such as intelligent production scheduling and shift scheduling. With the help of intelligent production lines, thin-film solar cell manufacturers can efficiently and accurately calculate equipment utilization rates to improve production efficiency. Currently, the most widely used solar cells are classified into six types: monocrystalline silicon, polycrystalline silicon, amorphous silicon thin film, heterojunction (HIT), copper indium gallium selenide (CIGS), and cadmium telluride (CdTe). These technologies each have their advantages and disadvantages: monocrystalline silicon solar glass modules were the earliest developed and have high photoelectric conversion efficiency, but they have high technical requirements and high costs for raw material preparation; polycrystalline silicon modules have low conversion efficiency, but correspondingly lower costs; amorphous silicon consumes very little silicon material and has a simple process, but has the lowest conversion efficiency and poor stability; heterojunction modules have advantages such as high efficiency and low temperature coefficient, but they started later and related processes still need further development and maturation; compared with silicon crystal modules, copper indium gallium selenide (CIGS) and cadmium telluride (CdTe) thin-film modules have lower high-temperature requirements, less material loss, no light decay, good low-light performance, and are easy to install on building roofs and walls. Although rare earth elements and heavy metals are used in the production process, the emissions are lower than those of fossil resources such as oil and coal, and similar to those of natural gas. Due to their good economic benefits and environmentally friendly production process, the CIGS and CdTe thin-film solar cell module industry is currently developing rapidly. The production of thin-film solar cells requires the fabrication of metal and non-metal thin films on the surface of glass substrates through deposition, sputtering, and other methods. However, existing glass substrate production systems are ineffective at detecting and removing defective glass substrates, resulting in poor statistical results regarding the yield and uptime of production equipment. Furthermore, existing production systems lack corresponding quality inspection technologies for large-size solar glass substrates.

[0003] To address the shortcomings of existing technologies, people have conducted long-term explorations and proposed various solutions. For example, Chinese patent literature discloses a multi-vision defect detection device and method for large-size LCD glass substrates on a production line [201410125777.0]. It uses a line scan imaging detection system to obtain high-definition grayscale images of the LCD glass substrate to be inspected. The device has a simple structure and is easy to operate. The method of this invention processes the acquired image, uses the k-means clustering method to determine the presence of defects in the preprocessed LCD glass substrate image, marks the defect areas, selects the support vector machine (SVM) classification method to determine the defect category, and counts the number of defects.

[0004] The above solution has solved the problem of quality inspection of large-size glass substrates to a certain extent, but it still has many shortcomings, such as poor statistical results on the yield of glass substrates. Summary of the Invention

[0005] The purpose of this invention is to address the above-mentioned problems by providing a well-designed intelligent production line utilization rate monitoring system for thin-film solar cell production that yields good statistical results.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an intelligent production line utilization rate monitoring system for thin-film solar cell production, comprising a discharge platform, a transmission component mounted on the discharge platform, a contact detection component positioned between the transmission component and the discharge platform, an optical detection component mounted above the discharge platform opposite to the transmission component, a material distribution component positioned at the outlet of the discharge platform, and monitoring components positioned at the inlet and outlet of the discharge platform. Finished glass substrates are exported from the production line via the transmission component. During the transmission process, dual quality inspection is performed by the contact detection component and the optical detection component. Defective products are exported via the material distribution component, and their yield rate is recorded by the monitoring component, thereby improving the overall accuracy of the production line's statistical assessment of equipment utilization rate.

[0007] In the aforementioned intelligent production line utilization monitoring system for thin-film solar cell production, the transmission component includes a transmission guide roller. A drive component is installed inside the discharge platform to drive the transmission guide roller to rotate. A lifting component is installed between the transmission guide roller and the discharge platform, and the lifting component is linked to the material distribution component. The drive component provides driving torque to the transmission guide roller. During transmission, the lifting component separates the glass substrate, facilitating the removal of defective products by the material distribution component.

[0008] In the aforementioned intelligent production line utilization monitoring system for thin-film solar cell production, the conveying guide roller includes a conveying cylinder covered with an anti-slip layer. A through-hole, symmetrically positioned relative to the center of the conveying guide roller, is formed between the conveying cylinder and the anti-slip layer. An ejection assembly is installed inside the conveying cylinder and between the through-hole. The ejection assembly includes ejection blocks with rounded ends, which are inserted into the through-holes of the conveying guide roller and its anti-slip layer and have movable sleeves connected to the inner side of the conveying cylinder. An ejection cylinder is rotatably mounted inside the conveying cylinder, and the ejection cylinder has centrally symmetrically arranged, arc-shaped ejection surfaces that extend axially along the ejection head and abut against the ends of the ejection blocks. A rotating assembly is installed between the ejection cylinder and the conveying cylinder. The rotating assembly includes a rotating motor installed inside the end of the ejection cylinder, which is driven by a gear set meshing with a rotating gear ring fixed inside the end of the conveying cylinder. By controlling the extension and retraction of the ejection blocks and their contact surface with the glass substrate, the conveying guide roller facilitates timely detachment of the glass substrate from the conveying guide roller, ensuring conveying stability.

[0009] In the aforementioned intelligent production line utilization monitoring system for thin-film solar cell production, the drive assembly includes a drive cylinder located at the end of the conveyor rollers. Drive seats for inserting the drive cylinder are located on both sides of the discharge platform. A drive motor is installed inside each drive seat, and the drive motor is driven by a planetary gear set meshing with a drive gear ring located inside the drive cylinder. A limiting ratchet is located on the outside of the drive cylinder, and a limiting pawl that engages with the limiting ratchet is installed inside the drive seat. An elastic limiting element is provided between the limiting pawl and the drive seat. The drive assembly drives the conveyor tube to rotate unidirectionally, and the independent transmission of each conveyor roller helps improve the fault tolerance of the conveyor assembly.

[0010] In the aforementioned intelligent production line utilization monitoring system for thin-film solar cell production, the lifting assembly includes a lifting guide rail and a lifting slider slidably connected between the drive seat and the discharge platform. The lifting guide rail extends vertically. A servo motor is installed at the lower end of the discharge platform, and the servo motor is connected to a ball screw via a coupling. The ball screw is driven by the drive seat. Horizontal sliding seats are installed on both sides of the discharge platform. The lifting guide rail and lifting slider are positioned between the drive seat and the horizontal sliding seats. A horizontal sliding guide rail and a horizontal sliding slider are slidably connected between the horizontal sliding seats and the discharge platform. A threaded cylinder is fixed at the lower end of the horizontal sliding seat. Threaded rods, corresponding one-to-one with the horizontal sliding seats and driven by the threaded cylinders, are rotatably installed inside the discharge platform. A clutch assembly connects adjacent threaded rods and is driven by a dual-output shaft motor. The transmission guide rollers are raised and lowered or adjusted laterally by the lifting assembly. When a defective glass substrate is detected, it is guided out from the lower end of the discharge platform without affecting subsequent continuous feeding.

[0011] In the aforementioned intelligent production line utilization monitoring system for thin-film solar cell production, the clutch assembly includes a clutch rod connected to a dual-output shaft motor. A drive gear is fixed to the clutch rod. A transmission rod is slidably mounted inside the discharge platform. Several transmission gears are fixed to the transmission rod, which is connected to an electric push rod. A driven gear, meshing with the transmission gears, is fixed to the end of the threaded rod. Driven by the clutch assembly, the guide rollers move closer or further apart, adjusting their relative distance to accommodate different feeding frequencies.

[0012] In the aforementioned intelligent production line utilization monitoring system for thin-film solar cell production, the material sorting component includes stacked material sorting plates. The lower material sorting plate has a downward-sloping receiving plate fixed to its end opposite the transmission component. The upper material sorting plate has a guide plate rotatably connected to its end opposite the transmission component, and the guide plate is driven by a guide motor. The material sorting component separates the glass substrates. Qualified glass substrates are guided by the guide plate and discharged from the upper material sorting plate, while unqualified glass substrates are blocked by the guide plate and discharged from the lower material sorting plate as the transmission rollers descend.

[0013] In the aforementioned intelligent production line utilization monitoring system for thin-film solar cell production, the contact detection component includes an edge detection component and a surface detection component. The edge detection component includes a detection base fixed to the inside of the discharge platform, with several detection rollers rotating on the base. The two ends of the rollers' shafts are movably connected to the base, with elastic reset components between them. A thin-film pressure sensor is wrapped around the outside of each roller. The surface detection component includes a detection crossbar arranged laterally on the transmission assembly. Both ends of the crossbar are inserted into adjustment slots on both sides of the discharge platform. The adjustment slots extend vertically, and the crossbar is clamped and fixed to the slots via threaded components. A detection roller is rotatably mounted on the crossbar, and the roller has circumferentially circumferentially circumferentially circumferentially equidistantly axially arranged detection slots. An elastic detection ring is fitted inside each slot, and a thin-film pressure sensor is wrapped around the outside of the detection ring. The contact detection component performs a pressing-type detection on the surface and edges of the glass substrate to determine whether the edges are intact and whether there is any bending deformation, adjusting the pressing torque as needed.

[0014] In the aforementioned intelligent production line utilization monitoring system for thin-film solar cell production, the optical inspection component includes an inspection cylinder positioned above the discharge platform. An optical fiber is installed inside the cylinder, extending to the upper end of a transmission component in a brush-like structure. Photosensitive elements, opposite to the optical fiber, are installed between the transmission components. An inspection beam is mounted on the upper end of the discharge platform, with an inspection slider slidably mounted on it. A miniature hub motor drives the inspection slider between the slider and the inspection beam. A lighting lamp and a digital camera, opposite to the transmission component, are mounted on the inspection slider. The optical inspection component analyzes the refractive effect of the glass substrate to determine if it exhibits defects such as distortion or deformation, and uses visual inspection to determine if scratches are present on the glass substrate surface.

[0015] In the aforementioned intelligent production line utilization monitoring system for thin-film solar cell production, the monitoring components include monitoring cameras installed at the inlet and outlet of the discharge platform, and a photosensor installed at the outlet of the discharge platform; the monitoring components are equipped with a programmable logic controller. The monitoring components record the detection data of each incoming glass substrate, generate and output the yield rate.

[0016] Compared with existing technologies, the advantages of this invention are as follows: During the glass substrate transfer process, the transfer component performs dual detection on the glass substrate through a contact detection component and an optical detection component, thereby improving detection accuracy and ensuring the statistical effect of yield rate; the lifting component adjusts the vertical and horizontal orientation of the transfer guide roller, and works with the material distribution component to achieve rapid separation of defective glass substrates, ensuring the stability of continuous feeding and detection; the contact surface between the transfer guide roller and the glass substrate can be adjusted according to the feeding and discharging requirements. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention;

[0018] Figure 2 This is a structural schematic diagram from another perspective of the present invention;

[0019] Figure 3 This is a schematic diagram of the lifting component of the present invention;

[0020] Figure 4 This is a cross-sectional view of the transmission component of the present invention;

[0021] Figure 5 This is a structural cross-sectional view of the transmission component of the present invention from another perspective;

[0022] Figure 6 This is a partial schematic diagram of the present invention;

[0023] Figure 7 This is a partial schematic diagram of the present invention;

[0024] In the diagram, the components are: 1. Discharge platform; 2. Conveying assembly; 21. Conveying guide roller; 22. Conveying cylinder; 23. Anti-slip layer; 24. Ejector block; 25. Movable sleeve; 26. Ejector cylinder; 27. Ejector surface; 28. Rotary motor; 29. ​​Rotary gear ring; 3. Contact detection assembly; 31. Detection base; 32. Detection roller; 33. Elastic reset component; 34. Detection crossbar; 35. Adjustment groove; 36. Detection roller; 37. Detection groove; 38. Detection ring; 4. Optical detection assembly; 41. Detection cylinder; 42. Optical fiber; 43. Photosensitive element; 44. Detection beam; 45. Detection slider; 46. Miniature hub motor; 47. Lighting lamp; 48. Digital camera; 5. Material distribution assembly; 51. Material distribution plate; 52. Material receiving plate; 6. Guide... Material plate 53, guide motor 54, monitoring component 6, monitoring camera 61, light sensor 62, drive component 7, drive cylinder 71, drive seat 72, drive motor 73, drive gear ring 74, limit ratchet 75, limit pawl 76, elastic limit component 77, planetary gear set 78, lifting component 8, lifting guide rail 81, lifting slider 82, servo motor 83, ball screw 84, transverse seat 85, transverse guide rail 86, transverse slider 87, threaded cylinder 88, threaded rod 89, clutch component 9, dual output shaft motor 91, clutch rod 92, drive gear 93, transmission rod 94, transmission gear 95, electric push rod 96, driven gear 97. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0026] like Figure 1-2As shown, an intelligent production line utilization monitoring system for thin-film solar cell production includes an adjustable-height discharge platform 1. The inlet and outlet of the discharge platform 1 are connected to the solar cell glass substrate production line for continuous glass substrate feeding. A transmission component 2 is installed on the discharge platform 1 to transport multiple sets of glass substrates at once. A contact detection component 3 is installed between the transmission component 2 and the discharge platform 1. An optical detection component 4 is installed above the discharge platform 1, opposite to the transmission component 2. During the transmission process by the transmission component 2, the surface of the glass substrate is detected by the contact detection component 3 and the optical detection component 4. When a defective product is detected, a signal is sent to a sorting component 5. A sorting component 5 is installed at the outlet of the discharge platform 1 to separate qualified glass substrates from defective products, ensuring the integrity of defective glass substrates during transmission for further analysis. Monitoring components 6 are installed at the inlet and outlet of the discharge platform 1 to count the glass substrates, calculate the yield rate, and upload the data to the control center.

[0027] Equipment uptime, also known as overall equipment efficiency, is a quantitative indicator that measures the gap between the actual and ideal production capacity of equipment. Introducing equipment uptime is intended to continuously improve management models and equipment operating efficiency. Calculating various sub-items based on the equipment uptime model allows for effective analysis of equipment operating efficiency, identification of key factors limiting production efficiency, and tracking and improvement to ultimately increase equipment production capacity and enterprise production efficiency while reducing production costs. The calculation method is: Equipment Uptime = Time Uptime × Performance Uptime × Yield Rate. Yield rate refers to the ratio of the number of glass substrates that meet quality requirements after processing to the total number of substrates processed, representing the accuracy of processing technology and equipment operation. Analyzing the yield rate can identify weaknesses in the production line, allowing for process improvement at the lowest possible cost.

[0028] Specifically, the conveying assembly 2 includes several conveying guide rollers 21 arranged in the same horizontal direction. A driving assembly 7 is installed inside the discharge platform 1 to drive the conveying guide rollers 21 to rotate, thus conveying the glass substrate at a uniform speed. The number and relative distance of the conveying guide rollers 21 are adjusted according to the length of the glass substrate to ensure that the lower end of each glass substrate is in contact with at least two conveying guide rollers 21. A lifting assembly 8 is provided between the conveying guide rollers 21 and the discharge platform 1, and the lifting assembly 8 is linked to the material distribution assembly 5. By adjusting the vertical relative height of the conveying guide rollers 21, the glass substrate is guided to move in a horizontal or inclined direction.

[0029] like Figure 1-2As shown, compared to conventional transmission structures, the transmission guide roller 21 includes a transmission cylinder 22 made of aluminum alloy. The outer side of the transmission cylinder 22 is covered with a silicone anti-slip layer 23 to increase the coefficient of friction with the glass substrate. A through hole symmetrically positioned relative to the center of the transmission guide roller 21 is formed between the transmission cylinder 22 and the anti-slip layer 23. An ejector assembly is disposed inside the transmission cylinder 22 and between the through hole. The through holes and the ejector assembly are arranged equidistantly along the axial direction of the transmission guide roller 21.

[0030] from Figure 4 As shown, the ejector assembly includes ejector blocks 24 with rounded ends, which maintain a low coefficient of friction with the glass substrate. The ejector blocks 24 are inserted into the through holes of the transmission guide roller 21 and its anti-slip layer 23, and have a movable sleeve 25 connected to the inner side of the transmission cylinder 22. An ejector cylinder 26 is rotatably mounted inside the transmission cylinder 22. The ejector cylinder 26 has centrally symmetrically arranged, arc-shaped ejector surfaces 27 that extend axially along the ejector head and abut against the end of the ejector block 24. A rotating assembly is provided between the ejector cylinder 26 and the transmission cylinder 22. When the rotating assembly drives the ejector cylinder 26 to rotate relative to the transmission cylinder 22, the ejector surfaces 27 on the outer side of the ejector cylinder 26 cause the ejector blocks 24 to extend and retract within the through holes. Simultaneously, due to the elasticity of the movable sleeve 25, the ejector blocks 24 can automatically retract back into the transmission cylinder 22.

[0031] like Figure 5 As shown, the rotating components within each conveying guide roller 21 are independently controlled. Each rotating component includes a rotating motor 28 installed inside the end of the ejector cylinder 26. The rotating motor 28 engages with a rotating gear ring 29 fixed to the inner side of the end of the conveying cylinder 22 via a gear set. The rotating motor 28 drives the rotating gear ring 29 and its conveying cylinder 22 to rotate under the variable speed transmission of the gear set. Because the rotation angle inside the ejector cylinder 26 of different conveying guide rollers 21 is different, the ejection amount of the ejector block 24 within the same conveying cylinder 22 is the same, but the ejection amount of the ejector block 24 varies between different conveying cylinders 22.

[0032] Furthermore, each transmission guide roller 21 is driven synchronously under normal conditions. When there is a deviation in the spacing between adjacent glass substrates, the rotation speed of the transmission guide roller 21 is adjusted by controlling the transmission guide roller 21 to make the relative distance between the glass substrates more consistent. The drive assembly 7 includes a drive cylinder 71 disposed at the end of the transmission guide roller 21. Drive seats 72 for inserting the drive cylinder 71 are respectively disposed on both sides of the discharge platform 1. The drive seats 72 rise and fall synchronously with the transmission guide roller 21. A drive motor 73 is installed inside the drive seat 72. The drive motor 73 is driven by a drive gear ring 74 disposed inside the drive cylinder 71 through a planetary gear set 78. Under the meshing transmission of the planetary gear set 78, the drive cylinder 71 and its transmission guide roller 21 as a whole obtain a large transmission torque. A limiting ratchet 75 is provided on the outside of the drive cylinder 71. A limiting pawl 76 that engages with the limiting ratchet 75 is installed inside the drive seat 72. An elastic limiting member 77 is provided between the limiting pawl 76 and the drive seat 72. The drive cylinder 71 rotates in one direction under the action of the ratchet structure, so that the glass substrate is transported in one direction.

[0033] like Figure 3 As shown, when the contact detection component 3 and the optical detection component 4 detect defects in the glass substrate, the lifting component 8 is activated. The lifting component 8 includes a lifting guide rail 81 and a lifting slider 82 slidably connected between the drive seat 72 and the discharge table 1 to limit the range of motion of the drive seat 72. The lifting guide rail 81 extends vertically to maintain the vertical movement of the drive seat 72. A servo motor 83 is mounted at the lower end of the discharge table 1. The servo motor 83 is connected to a ball screw 84 via a coupling, and the ball screw 84 is drive-driven to the drive seat 72. The servo motor 83 drives the ball screw 84 to provide lifting torque for the drive seat 72.

[0034] The discharge platform 1 has cavities on both sides for mounting transverse sliding seats 85. Lifting guide rails 81 and lifting sliders 82 are positioned between the drive base 72 and the transverse sliding seats 85. A transverse sliding guide rail 86 and a transverse sliding slider 87 are slidably connected between the transverse sliding seats 85 and the discharge platform 1, allowing the transverse sliding seats 85 to move laterally relative to the discharge platform 1. A threaded cylinder 88 is fixed to the lower end of the transverse sliding seat 85. Threaded rods 89, corresponding one-to-one with the transverse sliding seats 85 and driven by the threaded cylinders 88, are rotatably mounted inside the discharge platform 1. A clutch assembly 9 connects adjacent threaded rods 89 and is driven by a dual-output shaft motor 91. When the threaded rods 89 rotate under the drive of the dual-output shaft motor 91, the threaded cylinders 88 and the transverse sliding seats 85 move laterally, thereby adjusting the relative distance between the transmission guide rollers 21.

[0035] from Figure 3As can be seen, the clutch assembly 9 includes a clutch rod 92 connected to a dual-output shaft motor 91. The dual-output shaft motor 91 synchronously provides rotational driving torque to the threaded rods 89 arranged at both ends of the motor. The clutch assembly 9 controls the transmission on / off and the gear ratio. A drive gear 93 is fixed on the clutch rod 92. A transmission rod 94 is slidably installed inside the discharge table body 1. Several transmission gears 95 are fixed on the transmission rod 94, and the transmission rod 94 is connected to an electric push rod 96. A driven gear 97 that meshes with the transmission gears 95 is fixed to the end of the threaded rod 89. The electric push rod 96 pushes the transmission rod 94 to slide, causing the transmission gears 95 to mesh or disengage with the drive gear 93 and the driven gear 97. Each clutch assembly 9 connected to the threaded rod 89 is equipped with an independent electric push rod 96.

[0036] At the same time, such as Figure 7 As shown, the material sorting assembly 5 includes stacked material sorting plates 51. Under normal conditions, each conveying guide roller 21 is at the same horizontal position as the upper material sorting plate 51. When a defective glass substrate is detected, the conveying guide rollers 21 descend one by one under the action of the lifting assembly 8, causing the glass substrate to slide tilted onto the lower material sorting plate 51. A downwardly inclined receiving plate 52 is fixed to the end of the lower material sorting plate 51 opposite to the conveying assembly 2 to guide the glass substrate. A guide plate 53 is rotatably connected to the end of the upper material sorting plate 51 opposite to the conveying assembly 2, and the guide plate 53 is driven by the guide motor 54. Under normal conditions, the guide plate 53 tilts downward, not affecting the normal transmission of qualified glass substrates to the upper material sorting plate 51. When a defective glass substrate is detected, the guide plate 53 lifts up to block the glass substrate and guides it to tilt downward.

[0037] The basis for judging product quality is the results of equipment testing and manual measurement. The results of equipment measurement come not only from the testing mechanism of the processing equipment itself, but also from the testing results of the optical testing component 4 and the contact testing component 3 on the production line. These testing devices will perform multiple tests on the substrates on the production line, such as visual inspection, thickness, and conductivity.

[0038] like Figure 6As shown, the surface flatness of the glass substrate is directly detected by the contact detection component 3 during the transport process. The contact detection component 3 includes an edge detection component and a surface detection component. The edge detection component includes a detection base 31 fixed inside the discharge platform 1. Several detection rollers 32 rotate on the detection base 31. The two ends of the rotating shaft of the detection rollers 32 are movably connected to the detection base 31 and an elastic reset member 33 is provided between them. A thin film pressure sensor is covered on the outside of the detection rollers 32. When the glass substrate passes through the detection base 31, the detection rollers 32 press against the edge of the glass substrate. The pressure change is detected by the thin film pressure sensor, thereby determining whether the side of the glass substrate is flat. The surface detection component includes a detection crossbar 34 arranged laterally on the transport component 2. The two ends of the detection crossbar 34 are inserted into the adjustment grooves 35 on both sides of the discharge platform 1. The adjustment grooves 35 extend vertically, and the detection crossbar 34 is clamped and fixed to the adjustment grooves 35 by threaded parts. The height of the detection crossbar 34 can be adjusted by adjusting the threaded parts to accommodate glass substrates of different thicknesses. A detection roller 36 is rotatably mounted on the detection crossbar 34. The detection roller 36 has detection grooves 37 arranged circumferentially and equidistantly along the axial direction. An elastic detection ring 38 is fitted inside each detection groove 37, and a thin-film pressure sensor is wrapped around the outside of the detection ring 38. The detection roller 36 is made of a rigid material, which, combined with the flexible detection rings 38, prevents excessive clamping force from damaging the surface of the glass substrate. The detection rings 38 of adjacent detection rollers 36 are staggered.

[0039] Clearly, in addition to direct contact detection, non-contact detection can also be performed using an optical detection assembly 4. The optical detection assembly 4 includes a detection cylinder 41 positioned above the discharge platform 1. An optical fiber 42 is installed inside the detection cylinder 41, extending to the upper end of the transmission assembly 2 in a brush-like structure. When the glass substrate is transported on the transmission assembly 2, the end of the optical fiber 42 contacts the surface of the glass substrate, uniformly generating light-emitting points on the surface. Photosensitive elements 43, opposite to the optical fiber 42, are installed between the transmission assemblies 2. These photosensitive elements 43, aligned with the dispersed light-emitting points, sense changes in refraction during the transport of the glass substrate, thereby detecting and determining the presence of impurities within the glass substrate. A detection beam 44 is installed at the upper end of the discharge platform 1. A detection slider 45 is slidably mounted on the detection beam 44. A miniature hub motor 46, driving the detection slider 45, is positioned between the detection slider 45 and the detection beam 44. A light 47 and a digital camera 48, opposite to the transmission assembly 2, are mounted on the detection slider 45. The detection slider 45 moves synchronously, detecting defects on the surface of the glass substrate using industrial image recognition. The yield rate of the production line needs to be tracked by glass substrates to count the number of substrates that are put into the production line and eventually become good products after packaging, as well as the number of fragments due to quality, equipment failure and other reasons.

[0040] Preferably, the monitoring component 6 includes a monitoring camera 61 installed at the inlet and outlet of the unloading platform 1, and a photosensor 62 installed at the outlet of the unloading platform 1; the monitoring component 6 is equipped with a programmable logic controller (PLC). The PLC is used for data acquisition and horizontal communication, and can also communicate vertically with the upper-level system. The photosensor 62 monitors the movement of the glass substrate on the production line in real time and transmits the data to the automation control system. The PLCs of multiple devices are connected to the equipment automation control program to ensure the real-time transmission of messages such as glass substrate entering and leaving the equipment, substrate processing results, equipment status switching, consumable consumption, fault alarms, and instructions issued by the equipment automation control program. Message exchange between the equipment automation control program and the manufacturing execution system is carried out through a message queue, which can store and distribute messages and balance the message sending and receiving speed between systems. The Manufacturing Execution System (MES) stores and calculates production line data uploaded by the equipment automation control program, generating statistics such as equipment / production line output, batch quality inspection results, equipment downtime, and material consumption. It can also track glass substrates on the production line in real time and trace products after production, presenting users with real-time factory production status and historical data. This data can also be rendered and displayed on large screens in a more intuitive and logical way, achieving rich data visualization. Users can generate production work orders in the Enterprise Resource Planning (ERP) system, which then issues these work orders to the MES system, instructing it to execute the production plan according to the work orders. The MES system then provides real-time production progress feedback to the ERP system, including finished product quantity, finished product quality, and material consumption.

[0041] In summary, the principle of this embodiment is as follows: the glass substrate is transported by the transmission component 2. During the transmission process, the contact detection component 3 and the optical detection component 4 perform real-time detection on the glass substrate. When a defective product is detected, the material sorting component 5 removes it from the production line. At the same time, the monitoring component 6 records and processes the defective products, which has a good OEE monitoring effect.

[0042] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

[0043] Although this paper extensively uses components such as the discharge platform 1, transmission assembly 2, transmission guide roller 21, transmission cylinder 22, anti-slip layer 23, ejector block 24, movable sleeve 25, ejector cylinder 26, ejector surface 27, rotary motor 28, rotary gear ring 29, contact detection assembly 3, detection base 31, detection roller 32, elastic reset component 33, detection crossbar 34, adjusting groove 35, detection roller 36, detection groove 37, detection ring 38, optical detection assembly 4, detection cylinder 41, optical fiber 42, photosensitive element 43, detection beam 44, detection slider 45, miniature hub motor 46, lighting lamp 47, digital camera 48, material distribution assembly 5, material distribution plate 51, receiving plate 52, guide plate 53, guide The terms used include material motor 54, monitoring component 6, monitoring camera 61, light sensor 62, drive component 7, drive cylinder 71, drive seat 72, drive motor 73, drive gear ring 74, limiting ratchet 75, limiting pawl 76, elastic limiting component 77, planetary gear set 78, lifting component 8, lifting guide rail 81, lifting slider 82, servo motor 83, ball screw 84, transverse seat 85, transverse guide rail 86, transverse slider 87, threaded cylinder 88, threaded rod 89, clutch component 9, dual output shaft motor 91, clutch rod 92, driving gear 93, transmission rod 94, transmission gear 95, electric push rod 96, driven gear 97, etc., but the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of the invention; interpreting them as any additional limitation would contradict the spirit of the invention.

Claims

1. An intelligent production line utilization rate monitoring system for thin-film solar cell production, comprising a discharge platform (1), wherein a transmission component (2) is provided on the discharge platform (1), characterized in that, A contact detection component (3) is provided between the transmission component (2) and the discharge platform (1). An optical detection component (4) opposite to the transmission component (2) is installed above the discharge platform (1). A material distribution component (5) is provided at the outlet of the discharge platform (1). Monitoring components (6) are respectively provided at the inlet and outlet of the discharge platform (1). The transmission component (2) includes a transmission guide roller (21). A drive component (7) for driving the transmission guide roller (21) to rotate is installed inside the discharge platform (1). A lifting component (8) is provided between the transmission guide roller (21) and the discharge platform (1). The lifting component (8) is connected to the material distribution component. (5) Linkage; the drive assembly (7) includes a drive cylinder (71) located at the end of the transmission guide roller (21), and drive seats (72) for inserting the drive cylinder (71) are respectively provided on both sides of the discharge platform (1). A drive motor (73) is installed inside the drive seat (72). The drive motor (73) is driven by a drive gear ring (74) located inside the drive cylinder (71) through a planetary gear set (78). A limiting ratchet (75) is provided on the outside of the drive cylinder (71). A limiting pawl (76) is installed inside the drive seat (72) to engage with the limiting ratchet (75). The limiting pawl (76) and the drive seat (71) are linked. 2) An elastic limiting element (77) is provided between them; the lifting assembly (8) includes a lifting guide rail (81) and a lifting slider (82) that are slidably connected between the drive seat (72) and the discharge platform (1). The lifting guide rail (81) and the lifting slider (82) are used to limit the range of motion of the drive seat (72). The lifting guide rail (81) extends vertically to keep the drive seat (72) moving up and down. A servo motor (83) is installed at the lower end of the discharge platform (1). The servo motor (83) is connected to a ball screw (84) through a coupling. The ball screw (84) is connected to the drive seat (72) in a transmission connection. The discharge platform ( 1) A transverse shift seat (85) is installed on both sides respectively. The lifting guide rail (81) and the lifting slider (82) are set between the drive seat (72) and the transverse shift seat (85). A transverse shift guide rail (86) and a transverse slider (87) are slidably connected between the transverse shift seat (85) and the discharge platform body (1). A threaded cylinder (88) is fixed at the lower end of the transverse shift seat (85). A threaded rod (89) corresponding to the transverse shift seat (85) and connected to the threaded cylinder (88) is rotatably installed in the discharge platform body (1). A clutch assembly (9) is connected between adjacent threaded rods (89) and is connected to the dual output shaft motor (91) through the clutch assembly (9).

2. The intelligent production line utilization rate monitoring system for thin-film solar cell production according to claim 1, characterized in that, The transmission guide roller (21) includes a transmission cylinder (22), the outer side of which is covered with an anti-slip layer (23). Multiple through holes extending radially along the transmission cylinder (22) and its anti-slip layer (23) are symmetrically arranged relative to the center of the transmission guide roller (21). An ejector assembly is provided inside the transmission cylinder (22) and within the through holes. The ejector assembly includes ejector blocks (24) with rounded ends. The ejector blocks (24) are inserted into the through holes of the transmission cylinder (22) and its anti-slip layer (23) and have a movable sleeve (25) connected to the inner side of the transmission cylinder (22). An ejector cylinder (26) is rotatably installed inside the transmission cylinder (22). Multiple ejector surfaces arranged symmetrically in an arc shape are provided on the ejector cylinder (26). (27) The ejector surface (27) extends along the axial direction of the ejector head and abuts against the end of the ejector block (24). A rotating assembly is provided between the ejector cylinder (26) and the transmission cylinder (22). The rotating assembly includes a rotating motor (28) installed inside the end of the ejector cylinder (26). The rotating motor (28) meshes with the rotating gear ring (29) fixed inside the end of the transmission cylinder (22) through a speed-changing gear set. The rotating motor (28) drives the rotating gear ring (29) and its transmission cylinder (22) to rotate under the speed-changing transmission of the speed-changing gear set. The rotation angle inside the ejector cylinder (26) inside different transmission guide rollers (21) is different. The ejection amount of the ejector block (24) inside the same transmission cylinder (22) is the same. The ejection amount of the ejector block (24) in different transmission cylinders (22) is different.

3. The intelligent production line utilization rate monitoring system for thin-film solar cell production according to claim 1, characterized in that, The clutch assembly (9) includes a clutch rod (92) connected to a dual-output shaft motor (91). A drive gear (93) is fixed on the clutch rod (92). A transmission rod (94) is slidably installed inside the discharge platform body (1). A plurality of transmission gears (95) are fixed on the transmission rod (94), and the transmission rod (94) is connected to an electric push rod (96). A driven gear (97) that meshes with the transmission gear (95) is fixed at the end of the threaded rod (89). The electric push rod (96) pushes the transmission rod (94) to slide, so that the transmission gear (95) meshes with or separates from the drive gear (93) and the driven gear (97).

4. The intelligent production line utilization rate monitoring system for thin-film solar cell production according to claim 1, characterized in that, The material distribution assembly (5) includes material distribution plates (51) arranged in upper and lower layers. The lower material distribution plate (51) is fixed with a downwardly inclined receiving plate (52) at one end opposite to the transmission assembly (2). The upper material distribution plate (51) is rotatably connected with a guide plate (53) at one end opposite to the transmission assembly (2). The guide plate (53) is connected to the guide motor (54) for transmission.

5. The intelligent production line utilization rate monitoring system for thin-film solar cell production according to claim 1, characterized in that, The contact detection component (3) includes an edge detection component and a surface detection component; the edge detection component includes a detection base (31) fixed inside the discharge platform (1), on which a plurality of detection rollers (32) rotate, the two ends of the rotating shaft of the detection rollers (32) being movably connected to the detection base (31) and an elastic reset member (33) is provided between them, and a thin film pressure sensor is covered on the outside of the detection rollers (32); the surface detection component includes a detection crossbar (34) arranged laterally on the transmission component (2), and so on. The detection crossbar (34) is inserted into the adjustment grooves (35) on both sides of the discharge platform body (1). The adjustment grooves (35) extend vertically and the detection crossbar (34) is clamped and fixed to the adjustment grooves (35) by threaded parts. A detection roller (36) is rotatably installed on the detection crossbar (34). The detection roller (36) has detection grooves (37) that are circumferentially encircled and equidistantly arranged along the axial direction. An elastic detection ring (38) is fitted inside the detection groove (37). A thin film pressure sensor is wrapped around the outside of the detection ring (38).

6. The intelligent production line utilization rate monitoring system for thin-film solar cell production according to claim 1, characterized in that, The optical detection component (4) includes a detection cylinder (41) disposed above the discharge platform (1), an optical fiber (42) is disposed inside the detection cylinder (41), and the optical fiber (42) extends to the upper end of the transmission component (2) in the form of a brush structure. A photosensitive element (43) opposite to the optical fiber (42) is installed between the transmission components (2). A detection beam (44) is installed at the upper end of the discharge platform (1), and a detection slider (45) is slidably mounted on the detection beam (44). A miniature hub motor (46) for driving the detection slider (45) to slide is disposed between the detection slider (45) and the detection beam (44). A light lamp (47) and a digital camera (48) opposite to the transmission component (2) are installed on the detection slider (45).

7. The intelligent production line utilization rate monitoring system for thin-film solar cell production according to claim 1, characterized in that, The monitoring component (6) includes a monitoring camera (61) installed at the inlet and outlet of the discharge platform (1), and a photosensitive sensor (62) is installed at the outlet of the discharge platform (1); the monitoring component (6) is equipped with a programmable logic controller.

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