A material feeding test detection device and method for LCD liquid crystal display screen housing

Abstract

The invention belongs to the technical field of liquid crystal display screen production, and specifically is a feed test detection device and method for an LCD liquid crystal display screen shell, comprising a main conveying mechanism and a feed detection box, the feed detection box is located near the output side of the main conveying mechanism, an ultrasonic flaw detector, a surface defect visual scanner, an internal environment detection module, an internal environment adjustment mechanism and a shell clamping transfer mechanism are installed in the feed detection box, and a control display panel is fixedly arranged on the front of the feed detection box; the invention performs fusion analysis through a feed fusion analysis module, improves the detection efficiency and ensures the accuracy of the detection result, directly classifies and conveys the shell after the detection, realizes continuous and accurate judgment of the shell quality, and the internal environment performance module performs stability analysis on the internal environment of the feed detection box during the detection period, realizes accurate analysis and automatic adjustment of the detection environment, and reduces the influence of the detection environment on the accuracy of the detection result.

Description

Technical Field

[0001] The invention relates to the technical field of liquid crystal display screen production, in particular to a material feeding test detection device and method for an LCD liquid crystal display screen shell. Background Art

[0002] LCD is a flat ultra-thin display device, which consists of a certain number of color or black and white pixels and is placed in front of a light source or a reflective surface. LCD has low power consumption and is suitable for electronic devices using batteries. The main principle is to stimulate liquid crystal molecules with electric current to generate points, lines, and surfaces to form a picture with the back light tube. The shell of LCD is an important part of LCD. During the production and processing of LCD, the shell needs to be inspected for quality to prevent poor quality LCD shell from entering the subsequent process and affecting product quality.

[0003] At present, when inspecting the shell of an LCD display, defects and flaws on the shell surface are generally detected by naked eye observation, or by using relevant inspection equipment to detect shell surface defects. During the inspection process, it is impossible to directly integrate and analyze the inspection results and intuitively display the quality status of the LCD display shell. After the inspection, the shell cannot be directly classified and transported out, making it difficult to achieve continuous and accurate judgment of the quality of the LCD display shell, and it is difficult to analyze and automatically adjust the inspection environment. Changes in the inspection environment will affect the accuracy of the inspection results.

[0004] In view of the above technical defects, a solution is now proposed. Summary of the invention

[0005] The purpose of the present invention is to provide a material test detection device and method for an LCD display screen shell, which solves the problems that the detection results cannot be directly integrated and analyzed during the detection process and the quality status of the LCD display screen shell cannot be intuitively displayed, the shell cannot be directly classified and transported out after the detection, it is difficult to achieve continuous and accurate judgment of the quality of the LCD display screen shell, and it is difficult to analyze and automatically adjust the detection environment.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A feeding test detection device for an LCD display screen housing comprises a main conveying mechanism and a feeding detection box, wherein the feeding detection box is located near the output side of the main conveying mechanism, the main conveying mechanism is composed of a feeding conveyor belt, a roller mounting frame and a feeding conveyor roller, the feeding conveyor roller is located on both sides of the roller mounting frame and is rotatably connected thereto through bearings, and one group of feeding conveyor rollers is driven by a motor, the feeding conveyor belt bypasses the outside of two groups of feeding conveyor rollers, and a plurality of frame support columns are fixedly arranged at the bottom of the roller mounting frame by bolts; the feeding detection box is fixedly arranged on the top of the roller mounting frame, and openings are arranged on both sides of the feeding detection box;

[0008] The feed inspection box is equipped with an ultrasonic flaw detector, a surface defect visual scanner, an internal environment detection module, an internal environment adjustment mechanism and a shell clamping transfer mechanism; a control display panel is fixedly arranged on the front of the feed inspection box, and the ultrasonic flaw detector, the surface defect visual scanner and the internal environment detection module are all communicatively connected to the control display panel, and the control display panel includes a processor, a database, a feed fusion analysis module, a data preprocessing module, an internal environment performance feedback module and an equipment automatic inspection module, and the processor is communicatively connected to the database, the feed fusion analysis module, the data preprocessing module and the internal environment performance module;

[0009] The feed fusion analysis module performs fusion analysis on the detection data of the LCD display shell, determines whether the LCD display shell is high-quality, good-quality or low-quality, and sends a high-quality signal, a good-quality signal or a low-quality signal to the processor; the data preprocessing module preprocesses the internal environment information of the feed inspection box, and sends the preprocessed information to the internal environment performance module through the processor; the internal environment performance module performs stability analysis on the internal environment of the feed inspection box during the detection period, generates an internal environment stability signal or an internal environment deviation signal, and sends the internal environment stability signal or the internal environment deviation signal to the processor.

[0010] Furthermore, the specific analysis process of the input fusion analysis module is as follows:

[0011] The inspection data of the LCD display housing is obtained, including the inspection results of the ultrasonic flaw detector and the defect scanning results of the surface defect visual scanner. The inspection results include no damage, benign damage and severe damage, and the defect scanning results include no defect, benign defect and severe defect.

[0012] The non-damage result is assigned a flaw detection value of 1, the benign damage result is assigned a flaw detection value of 2, and the severe damage result is assigned a flaw detection value of 3; the non-defect result is assigned a defect scan value of 1, the benign defect result is assigned a defect scan value of 2, and the severe defect result is assigned a defect scan value of 3;

[0013] Multiply the flaw detection value of the flaw detection result by the defect scanning value of the defect scanning result, and calibrate the product of the two as the quality inspection value. If the value of the quality inspection value is 1 or 2, the corresponding LCD liquid crystal display shell is judged to be a good product, and a good product signal is generated and sent to the processor; if the value of the quality inspection value is 4, the corresponding LCD liquid crystal display shell is judged to be a good product, and a good product signal is generated and sent to the processor; if the value of the quality inspection value is 6 or 9, the corresponding LCD liquid crystal display shell is judged to be a bad product, and a bad product signal is generated and sent to the processor.

[0014] Furthermore, after receiving the high-quality signal, the processor issues a control instruction to enable the shell clamping transfer mechanism to place the corresponding LCD liquid crystal display shell into the high-quality conveying mechanism, and the high-quality conveying mechanism continues to convey the corresponding LCD liquid crystal display shell outward;

[0015] After receiving the good product signal, the processor issues a control instruction to make the shell clamping transfer mechanism put the corresponding LCD screen shell into the good product conveying mechanism, and the good product conveying mechanism conveys the corresponding LCD screen shell to the re-inspection area; the re-inspection area is a temporary storage area for good products, waiting for the operator to conduct a second inspection of the good products later;

[0016] After receiving the defective product signal, the processor sends a control instruction to make the shell clamping transfer mechanism put the corresponding LCD liquid crystal display shell into the defective product conveying mechanism, and the defective product conveying mechanism conveys the corresponding LCD liquid crystal display shell to the scrapping area; the scrapping area is a temporary storage area for defective products, waiting for the operator to transport the defective products away and scrap them later.

[0017] Furthermore, the internal environment detection module includes a temperature sensor, a humidity sensor, a dust concentration sensor and a brightness sensor, the temperature sensor, the humidity sensor, the dust concentration sensor and the brightness sensor are one or more groups, and the temperature sensor, the humidity sensor, the dust concentration sensor and the brightness sensor are all arranged on the inner wall of the feed detection box; the internal environment adjustment mechanism adjusts the temperature, humidity and brightness in the feed detection box, and is used to filter dust from the air in the feed detection box.

[0018] Furthermore, the preprocessing process of the data preprocessing module includes:

[0019] A detection period is set, and multiple groups of internal environment information within the detection period are obtained, the internal environment information including temperature, humidity, dust concentration and brightness of the detection environment; the multiple groups of temperatures within the detection period are summed and averaged to obtain the average temperature value in the feed detection box, the multiple groups of humidity within the detection period are summed and averaged to obtain the average humidity value in the feed detection box, the multiple groups of dust concentrations within the detection period are summed and averaged to obtain the average dust concentration value in the feed detection box, and the multiple groups of brightness within the detection period are summed and averaged to obtain the average brightness value in the feed detection box; the average temperature, average humidity, average dust concentration and average brightness are sent to the internal environment performance feedback module through the processor.

[0020] Furthermore, the analysis process of the internal environment performance module includes:

[0021] The environmental pre-optimization information is obtained through the database, and the environmental pre-optimization information includes the optimal temperature range, the optimal humidity range, the dust concentration threshold and the optimal brightness range when the feed detection box (4) is detected. The maximum value and the minimum value of the optimal temperature range are summed and averaged to obtain the optimal temperature value, the maximum value and the minimum value of the optimal humidity range are summed and averaged to obtain the optimal humidity value, the maximum value and the minimum value of the optimal brightness range are summed and averaged to obtain the optimal brightness value, and the dust concentration threshold is marked as the optimal dust value;

[0022] The average temperature, average humidity, average dust concentration and average brightness of the detection period are obtained, and the absolute value of the difference between the average temperature and the optimal temperature value is marked as the temperature deviation value, the absolute value of the difference between the average humidity and the optimal humidity value is marked as the humidity deviation value, and the absolute value of the difference between the average brightness and the optimal brightness value is marked as the brightness deviation value; the temperature deviation threshold, humidity deviation threshold and brightness deviation threshold are obtained through the database, and the temperature deviation value, humidity deviation value and brightness deviation value are compared with the corresponding thresholds respectively, and the dust concentration average is numerically compared with the optimal dust value;

[0023] If the temperature deviation value, humidity deviation value, and brightness deviation value are all less than the corresponding threshold value and the dust concentration average value is less than the optimal dust value, an internal environment stability signal is generated and sent to the processor; otherwise, the temperature deviation value, humidity deviation value, brightness deviation value, and dust concentration average value are normalized and analyzed, and the internal stability coefficient of the feeding detection box during the detection period is obtained through normalized analysis and processing;

[0024] The internal stability threshold is obtained through the database, and the internal stability coefficient of the detection period is compared with the internal stability threshold. If the internal stability coefficient is less than the internal stability threshold, an internal environment stability signal is generated and sent to the processor; if the internal stability coefficient is greater than or equal to the internal stability threshold, an internal environment deviation signal is generated and sent to the processor.

[0025] Furthermore, after receiving the internal environment stability signal, the processor does not make any feedback; after receiving the internal environment deviation signal, the processor sends an adjustment instruction to the internal environment adjustment mechanism, and the internal environment adjustment mechanism adjusts the temperature, humidity and brightness in the feed inspection box accordingly, and reduces the dust concentration in the feed inspection box.

[0026] Furthermore, the processor is connected to the equipment automatic inspection module in communication. The equipment automatic inspection module performs equipment quality inspection on the ultrasonic flaw detector and the surface defect visual scanner when the inspection operation is ready to start on the day, and generates a normal equipment signal or an abnormal equipment signal. The specific operation process of the automatic inspection module includes:

[0027] The fault information and time limit information of the ultrasonic flaw detector and the surface defect visual scanner are respectively obtained through the database. The fault information of the ultrasonic flaw detector includes the total number of historical faults of the ultrasonic flaw detector and the number of faults in the past three months, and the time limit information of the ultrasonic flaw detector includes the total working time and life limit of the ultrasonic flaw detector; the fault information of the surface defect visual scanner includes the total number of historical faults of the surface defect visual scanner and the number of faults in the past three months, and the time limit information of the surface defect visual scanner includes the total working time and life limit of the surface defect visual scanner;

[0028] The fault information and time limit information of the ultrasonic flaw detector are numerically calculated to obtain the flaw detector quality coefficient, and the fault information and time limit information of the surface defect visual scanner are numerically calculated to obtain the scanner quality coefficient; the flaw detector quality threshold and the scanner quality threshold are obtained through the database, and the flaw detector quality coefficient and the scanner quality coefficient are numerically compared with the corresponding thresholds;

[0029] If the quality coefficient of the flaw detector and the quality coefficient of the scanner are both less than or equal to the corresponding threshold values, it is determined that the feed inspection box can perform normal inspection of the LCD display screen shell, and a normal device signal is generated and sent to the processor; otherwise, it is determined that the feed inspection box cannot perform normal inspection of the LCD display screen shell, and an abnormal device signal is generated and sent to the processor.

[0030] Furthermore, the processor is communicatively connected to the alarm reminder module, which consists of an alarm, a red light and a green light. After receiving a normal signal from the equipment, the processor sends a control command of "turn on the green light" to the alarm reminder module, and the green light in the alarm reminder module turns on; after receiving an abnormal signal from the equipment, the processor sends a control command of "turn on the red light and sound an alarm" to the alarm reminder module, and the red light in the alarm reminder module flashes and the alarm sounds.

[0031] The material feeding test detection method of the LCD liquid crystal display screen housing comprises the following steps:

[0032] Step 1: When the inspection operation is ready for the day, the automatic inspection module of the equipment performs equipment quality inspection on the ultrasonic flaw detector and the surface defect visual scanner, generates a normal equipment signal or an abnormal equipment signal, and starts preparing for the LCD display shell inspection operation for the day after the normal equipment signal is generated. After the abnormal equipment signal is generated, the operator replaces the internal ultrasonic flaw detector or surface defect visual scanner, and then performs the LCD display shell inspection operation after the replacement is completed;

[0033] Step 2: When the LCD screen shell is inspected, the main conveying mechanism conveys the LCD screen shell into the infeed inspection box. After the LCD screen shell enters the infeed inspection box, the main conveying mechanism stops conveying. The ultrasonic flaw detector and the surface defect visual scanner in the infeed inspection box perform quality inspection and analysis on the LCD screen shell, and send the inspection and analysis data to the infeed fusion analysis module through the processor.

[0034] Step 3: The feed fusion analysis module performs fusion analysis based on the detection analysis data and generates a superior signal, a good signal or a inferior signal, and sends the superior signal, the good signal or the inferior signal to the processor;

[0035] After receiving the good product signal, the processor issues a control instruction to make the shell clamping transfer mechanism put the corresponding LCD liquid crystal display shell into the good product conveying mechanism, and the good product conveying mechanism continues to convey the corresponding LCD liquid crystal display shell outward; after receiving the good product signal, the processor issues a control instruction to make the shell clamping transfer mechanism put the corresponding LCD liquid crystal display shell into the good product conveying mechanism, and the good product conveying mechanism conveys the corresponding LCD liquid crystal display shell to the re-inspection area; after receiving the bad product signal, the processor issues a control instruction to make the shell clamping transfer mechanism put the corresponding LCD liquid crystal display shell into the bad product conveying mechanism, and the bad product conveying mechanism conveys the corresponding LCD liquid crystal display shell to the scrapping area;

[0036] Step 4: Repeat steps 2 and 3 to continuously convey and inspect the LCD display housing.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] 1. In the present invention, the equipment quality inspection of the ultrasonic flaw detector and the surface defect visual scanner is performed through the equipment automatic inspection module to generate a normal equipment signal or an abnormal equipment signal. After the normal equipment signal is generated, the preparation for the LCD liquid crystal display screen shell inspection operation of the day is started, which helps to ensure the normal and continuous operation of the inspection equipment on the day, and helps to ensure the accuracy of the inspection results on the day;

[0039] 2. In the present invention, the main conveying mechanism conveys the LCD display screen shell, and the ultrasonic flaw detector and the surface defect visual scanner in the feed inspection box perform quality inspection and analysis on the LCD display screen shell, and send the inspection and analysis data to the feed fusion analysis module through the processor. The feed fusion analysis module performs fusion analysis based on the inspection and analysis data and generates a superior signal, a good signal or a inferior signal, and sends the superior signal, the good signal or the inferior signal to the processor;

[0040] During the detection process, the detection results can be directly integrated and analyzed and the quality status of the LCD display shell can be intuitively displayed, thereby improving the detection efficiency and ensuring the accuracy of the detection results. Based on the received integrated analysis signal, the processor issues a control instruction to enable the shell clamping transfer mechanism to place the corresponding LCD display shell into the superior product conveying mechanism, the good product conveying mechanism or the inferior product conveying mechanism. After the detection is completed, the shell can be directly classified and conveyed out, thereby realizing continuous and accurate judgment of the quality of the LCD display shell.

[0041] 3. In the present invention, the internal environment information of the feed inspection box is preprocessed by the data preprocessing module, and the internal environment performance module performs stability analysis on the internal environment of the feed inspection box during the inspection period, generates an internal environment stability signal or an internal environment deviation signal and sends it to the processor. After receiving the internal environment deviation signal, the processor issues an adjustment instruction to enable the internal environment adjustment mechanism to make corresponding adjustments to the inspection environment, thereby achieving accurate analysis and automatic adjustment of the inspection environment, reducing the impact of the inspection environment on the accuracy of the inspection results, and playing an auxiliary role in ensuring the normal and stable operation of the inspection equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings;

[0043] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0044] Figure 2 It is a transfer and conveying block diagram of the LCD liquid crystal display screen housing in the present invention;

[0045] Figure 3 It is a structural block diagram of the feeding detection box in the present invention;

[0046] Figure 4 is the overall system block diagram of the present invention;

[0047] Figure 5 A system block diagram for controlling a display panel in the present invention;

[0048] Figure 6 This is a system block diagram of Embodiment 3 of the present invention.

[0049] Figure numerals: 1. feeding conveyor belt; 2. frame support column; 3. roller mounting frame; 4. feeding detection box; 5. control display panel; 6. feeding conveyor roller. DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0051] Embodiment 1:

[0052] like Figure 1-5 As shown, the present invention proposes a feeding test detection device and method for an LCD liquid crystal display screen housing, comprising a main conveying mechanism and a feeding detection box 4, wherein the feeding detection box 4 is located near the output side of the main conveying mechanism, and the main conveying mechanism is composed of a feeding conveyor belt 1, a roller mounting frame 3 and a feeding conveyor roller 6, wherein the feeding conveyor roller 6 is located on both sides of the roller mounting frame 3 and is rotatably connected thereto through bearings, and one group of the feeding conveyor rollers 6 is driven by a motor, thereby realizing the feeding conveyor belt 1 conveying the LCD liquid crystal display screen housing, and the feeding conveyor belt 1 bypasses the outside of the two groups of feeding conveyor rollers 6, and a plurality of frame support columns 2 are fixedly provided at the bottom of the roller mounting frame 3 by bolts; the feeding detection box 4 is fixedly provided on the top of the roller mounting frame 3, and openings are provided on both sides of the feeding detection box 4 for input and output of the LCD liquid crystal display screen;

[0053] An ultrasonic flaw detector, a surface defect visual scanner and a shell clamping and transferring mechanism are installed in the feed inspection box 4. The ultrasonic flaw detector and the surface defect visual scanner are existing technologies and are widely used in surface defect detection of products. The shell clamping and transferring mechanism is a manipulator capable of three-axis motion, which is mainly used to clamp and transfer the LCD liquid crystal display screen shell;

[0054] A control display panel 5 is fixedly arranged on the front of the feed inspection box 4. The ultrasonic flaw detector and the surface defect visual scanner are both communicatively connected to the control display panel 5. The control display panel 5 includes a processor, a database and a feed fusion analysis module. The processor is communicatively connected to the database and the feed fusion analysis module. The feed fusion analysis module performs fusion analysis on the detection data of the LCD liquid crystal display screen shell, determines whether the LCD liquid crystal display screen shell is a high-quality, good or low-quality product, and sends a high-quality signal, a good signal or a low-quality signal to the processor. The specific analysis process of the feed fusion analysis module is as follows:

[0055] Step S1, obtaining detection data of the LCD display housing, the detection data including the detection results of the ultrasonic flaw detector and the defect scanning results of the surface defect visual scanner, wherein the detection results include no damage, benign damage and severe damage, and the defect scanning results include no defect, benign defect and severe defect;

[0056] Step S2, assigning a flaw detection value of 1 to a result without damage, a flaw detection value of 2 to a result with benign damage, and a flaw detection value of 3 to a result with severe damage; the larger the flaw detection value TSZ value is, the more severe the damage to the corresponding LCD display housing is; assigning a defect scan value of 1 to a result without defect, a defect scan value of 2 to a result with benign defect, and a defect scan value of 3 to a result with severe defect; the larger the defect scan value QSZ value is, the more severe the surface defect condition of the corresponding LCD display housing is;

[0057] Step S3, multiplying the flaw detection value TSZ of the flaw detection result by the defect scanning value QSZ of the defect scanning result, and calibrating the product of the two as the quality inspection value ZJZ; that is, ZJZ=TSZ*QSZ. As can be seen from the above, the value of the quality inspection value ZJZ is 1, 2, 4, 6 or 9; the larger the value of the quality inspection value ZJZ, the less ideal the detection result of the corresponding LCD liquid crystal display screen shell is, and the worse the quality of the corresponding LCD liquid crystal display screen shell is;

[0058] Step S4, analyze the quality inspection value. If the value of the quality inspection value is 1 or 2, the corresponding LCD liquid crystal display shell is determined to be a good product, and a good product signal is generated and sent to the processor; if the value of the quality inspection value is 4, the corresponding LCD liquid crystal display shell is determined to be a good product, and a good product signal is generated and sent to the processor; if the value of the quality inspection value is 6 or 9, the corresponding LCD liquid crystal display shell is determined to be a bad product, and a bad product signal is generated and sent to the processor.

[0059] After receiving the high-quality signal, the processor sends a control instruction to make the shell clamping transfer mechanism put the corresponding LCD liquid crystal display shell into the high-quality conveying mechanism, and the high-quality conveying mechanism continues to convey the corresponding LCD liquid crystal display shell outward;

[0060] After receiving the good product signal, the processor issues a control instruction to make the shell clamping transfer mechanism put the corresponding LCD screen shell into the good product conveying mechanism, and the good product conveying mechanism conveys the corresponding LCD screen shell to the re-inspection area; the re-inspection area is a temporary storage area for good products, waiting for the operator to conduct a second inspection of the good products later;

[0061] After receiving the defective product signal, the processor issues a control command to make the shell clamping transfer mechanism put the corresponding LCD screen shell into the defective product conveying mechanism, and the defective product conveying mechanism conveys the corresponding LCD screen shell to the scrapping area; the scrapping area is a temporary storage area for defective products, waiting for the operator to transport the defective products away and scrap them later;

[0062] The structures of the superior product conveying mechanism, the good product conveying mechanism, and the inferior product conveying mechanism are the same as that of the main conveying mechanism. The control display panel also includes a display module. After receiving the superior product signal, the good product signal, or the inferior product signal, the processor edits the text information of "superior product", "good product", or "inferior product" and sends it to the display module for display. The display module also displays the flaw detection results and scanning results.

[0063] Embodiment 2:

[0064] like Figure 3-5 As shown, the difference between this embodiment and embodiment 1 is that the control display panel also includes a data preprocessing module and an internal environment display module, and the internal environment detection module and the internal environment adjustment mechanism are also installed in the feed detection box 4; the internal environment detection module includes a temperature sensor, a humidity sensor, a dust concentration sensor and a brightness sensor, the number of the temperature sensor, the humidity sensor, the dust concentration sensor and the brightness sensor is one group or multiple groups, and the temperature sensor, the humidity sensor, the dust concentration sensor and the brightness sensor are all arranged on the inner wall of the feed detection box 4; the internal environment adjustment mechanism adjusts the temperature, humidity and brightness in the feed detection box 4, and is used to filter the air in the feed detection box 4 for dust.

[0065] The processor is in communication connection with both the data preprocessing module and the internal environment performance module. The data preprocessing module preprocesses the internal environment information of the infeed detection box and sends the preprocessed information to the internal environment performance module through the processor. The preprocessing process of the data preprocessing module includes:

[0066] Step U1, set the detection period W1, the detection period W1 is five minutes, the time interval between two adjacent detection periods is the same, and obtain multiple groups of internal environment information within the detection period, the internal environment information includes the temperature, humidity, dust concentration and brightness of the detection environment;

[0067] Step U2, summing and averaging the multiple groups of temperatures in the detection period to obtain the temperature average value WJZ in the feed detection box 4, the temperature average value WJZ represents the average temperature of the detection environment in the corresponding detection period; summing and averaging the multiple groups of humidity in the detection period to obtain the humidity average value SJZ in the feed detection box 4, the humidity average SJZ represents the average humidity of the detection environment in the corresponding detection period;

[0068] The dust concentration of multiple groups in the detection period is summed and averaged to obtain the dust concentration average CNZ in the feed detection box 4, and the dust concentration average CNZ represents the average dust concentration of the detection environment in the corresponding detection period; the brightness of multiple groups in the detection period is summed and averaged to obtain the brightness average LJZ in the feed detection box 4, and the brightness average LJZ represents the average brightness of the detection environment in the corresponding detection period;

[0069] Step U3: Send the temperature average value WJZ, humidity average value SJZ, dust concentration average value CNZ and brightness average value LJZ to the internal environment performance feedback module through the processor.

[0070] The internal environment performance module performs stability analysis on the internal environment of the feed detection box 4 during the detection period, generates an internal environment stability signal or an internal environment deviation signal, and sends the internal environment stability signal or the internal environment deviation signal to the processor. The analysis process of the internal environment performance module includes:

[0071] Step T1, obtaining environmental pre-optimization information through the database, the environmental pre-optimization information represents the environmental data corresponding to the preset optimal environment in the feed inspection box 4, which is conducive to the accuracy of the test results when the feed inspection box 4 is in the preset optimal environment, and the environmental pre-optimization information includes the optimal temperature range, optimal humidity range, dust concentration threshold and optimal brightness range when the feed inspection box 4 is tested;

[0072] Step T2, summing and averaging the maximum and minimum values ​​of the optimal temperature range to obtain an optimal temperature value, summing and averaging the maximum and minimum values ​​of the optimal humidity range to obtain an optimal humidity value, summing and averaging the maximum and minimum values ​​of the optimal brightness range to obtain an optimal brightness value, and marking the dust concentration threshold as the optimal dust value;

[0073] Step T3, obtain the average temperature WJZ, average humidity SJZ, average dust concentration CNZ and average brightness LJZ of the detection period, mark the absolute value of the difference between the average temperature WJZ and the optimal temperature value as the temperature deviation WPZ, mark the absolute value of the difference between the average humidity SJZ and the optimal humidity value as the humidity deviation SPZ, and mark the absolute value of the difference between the average brightness LJZ and the optimal brightness value as the brightness deviation LPZ;

[0074] T4. Obtain the temperature deviation threshold, humidity deviation threshold and brightness deviation threshold through the database, compare the temperature deviation value WPZ with the temperature deviation threshold, the humidity deviation value SPZ with the humidity deviation threshold, the brightness deviation value LPZ with the brightness deviation threshold, and compare the dust concentration average value CNZ with the dust value;

[0075] If the temperature deviation value WPZ, the humidity deviation value SPZ, and the brightness deviation value LPZ are all less than the corresponding thresholds and the dust concentration average value CNZ and the good dust value are less than the good dust value, it indicates that the environmental conditions in the feeding detection box 4 during the current detection period are extremely good, and the real-time environment in the feeding detection box 4 has little impact on the detection result, then an internal environment stability signal is generated and sent to the processor; otherwise, the temperature deviation value WPZ, the humidity deviation value SPZ, the brightness deviation value LPZ, and the dust concentration average value CNZ are normalized and analyzed;

[0076] T5, Formula-based And the internal stability coefficient NWXs inside the feeding detection box 4 during the detection period is obtained through normalized analysis and processing; wherein, μ is the error correction factor and the value of μ is 1.127, k1, k2, k3, k4 are preset proportional coefficients, k1>k2>k3>k4>0 and k1+k2+k3+k4=3.628; it should be noted that, the larger the temperature deviation WPZ, the larger the humidity deviation SPZ, the larger the brightness deviation LPZ and the larger the dust concentration average CNZ, the larger the value of the internal stability coefficient NWXs, indicating that the greater the deviation of the real-time environmental conditions in the feeding detection box 4 from the optimal detection environment, the greater the adverse effect of the current detection environment on the detection result;

[0077] T6. Obtain the internal stability threshold through the database, and compare the internal stability coefficient NWXs of the detection period with the internal stability threshold. If the internal stability coefficient NWXs is less than the internal stability threshold, it indicates that the environment in the feeding detection box 4 during the current detection period has little impact on the detection result, and an internal environment stability signal is generated and sent to the processor; if the internal stability coefficient NWXs is greater than or equal to the internal stability threshold, it indicates that the current detection environment condition has a greater impact on the detection result, and an internal environment deviation signal is generated and sent to the processor.

[0078] After receiving the internal environment stable signal, the processor does not make any feedback; after receiving the internal environment deviation signal, the processor sends an adjustment instruction to the internal environment adjustment mechanism, and the internal environment adjustment mechanism adjusts the temperature, humidity and brightness in the feed inspection box 4 accordingly, and reduces the dust concentration in the feed inspection box 4, so as to realize real-time monitoring of the environment inside the feed inspection box 4. When the detection environment deviates from the optimal environment and an abnormality occurs, the detection environment is corrected and adjusted in time, which helps to ensure the normal operation of the internal detection equipment and the accuracy of the LCD detection results.

[0079] Embodiment three:

[0080] like Figure 6 As shown, the difference between this embodiment and embodiment 1 and embodiment 2 is that the control display panel also includes an equipment automatic inspection module, the processor is communicatively connected to the equipment automatic inspection module, the equipment automatic inspection module performs equipment quality inspection on the ultrasonic flaw detector and the surface defect visual scanner when the inspection operation preparation for the day begins, and generates a normal equipment signal or an abnormal equipment signal. The specific operation process of the automatic inspection module includes:

[0081] Step R1, respectively obtain the fault information and time limit information of the ultrasonic flaw detector and the surface defect visual scanner through the database, the fault information of the ultrasonic flaw detector includes the total historical fault count CLGc and the fault count CSGc in the past three months of the ultrasonic flaw detector, and the time limit information of the ultrasonic flaw detector includes the total working time CZGs and the life limit time CSQs of the ultrasonic flaw detector;

[0082] The fault information of the surface defect vision scanner includes the total number of historical faults QLGc and the number of faults in the past three months QSGc of the surface defect vision scanner, and the time limit information of the surface defect vision scanner includes the total working time QZGs and the life limit time QSQs of the surface defect vision scanner;

[0083] The life span duration indicates the remaining time of the ultrasonic flaw detector or surface defect visual scanner in its service life. The smaller the value of the life span duration is, the closer the ultrasonic flaw detector or surface defect visual scanner is to being scrapped.

[0084] Step R2, by formula The fault information and time limit information of the ultrasonic flaw detector are numerically calculated to obtain the flaw detector quality coefficient TBXs; wherein a1, a2, a3, and a4 are preset proportional coefficients, a1>a2>a4>a3>0, and a1+a2+a3+a4=5.612;

[0085] By formula The fault information and time limit information of the surface defect visual scanner are numerically calculated to obtain the scanner quality coefficient QBXs; wherein b1, b2, b3, and b4 are preset proportional coefficients, b1>b2>b4>b3>0 and b1+b2+b3+b4=4.127;

[0086] It should be noted that the larger the value of the flaw detector quality coefficient TBXs, the less likely it is that the ultrasonic flaw detector can work normally and stably, and the larger the value of the scanner quality coefficient QBXs, the less likely it is that the surface defect visual scanner can work normally and stably;

[0087] Step R3, obtaining the flaw detector quality meter threshold and the scanner quality meter threshold through the database, and numerically comparing the flaw detector quality meter coefficient and the scanner quality meter coefficient with the corresponding thresholds;

[0088] Step R4: If the quality coefficient of the flaw detector and the quality coefficient of the scanner are both less than or equal to the corresponding threshold values, it is determined that the feed inspection box 4 is capable of performing normal inspection of the LCD display screen casing, a normal device signal is generated and the normal device signal is sent to the processor; otherwise, it is determined that the feed inspection box 4 is unable to perform normal inspection of the LCD display screen casing, an abnormal device signal is generated and the abnormal device signal is sent to the processor.

[0089] The processor communicates with the alarm reminder module, which consists of an alarm, a red light and a green light. After receiving the normal signal of the equipment, the processor sends a control command of "turn on the green light" to the alarm reminder module, and the green light in the alarm reminder module lights up; after receiving the abnormal signal of the equipment, the processor sends a control command of "turn on the red light and sound the alarm" to the alarm reminder module, and the red light in the alarm reminder module flashes and the alarm sounds; passed.

[0090] The working process and principle of the present invention are as follows: when in use, when the preparation for the inspection operation of the day begins, the automatic inspection module of the equipment performs equipment quality inspection on the ultrasonic flaw detector and the surface defect visual scanner, generates a normal equipment signal or an abnormal equipment signal, and starts preparing for the inspection operation of the LCD liquid crystal display screen shell of the day after the normal equipment signal is generated, which helps to ensure the normal and continuous operation of the inspection equipment of the day, and helps to ensure the accuracy of the inspection results of the day; when performing the inspection, the main conveying mechanism conveys the LCD liquid crystal display screen shell, and the main conveying mechanism stops conveying after the LCD liquid crystal display screen shell enters the feed inspection box 4, and the ultrasonic flaw detector and the surface defect visual scanner in the feed inspection box 4 perform quality inspection and analysis on the LCD liquid crystal display screen shell, and send the inspection and analysis data to the feed fusion analysis module through the processor;

[0091] The feed fusion analysis module performs fusion analysis based on the detection analysis data and generates a superior signal, a good signal or a inferior signal, and sends the superior signal, the good signal or the inferior signal to the processor; during the detection process, the detection results can be directly fused and analyzed and the quality status of the LCD display shell can be intuitively displayed, without the need for manual visual observation to detect defects and flaws on the shell surface, thereby improving the detection efficiency while ensuring the accuracy of the detection results. Based on the received fusion analysis signal, the processor issues a control instruction to enable the shell clamping transfer mechanism to place the corresponding LCD display shell into the superior conveying mechanism, the good conveying mechanism or the inferior conveying mechanism. After the detection is completed, the shell can be directly classified and conveyed out, realizing continuous and accurate judgment of the quality of the LCD display shell;

[0092] During the detection process, the data preprocessing module preprocesses the internal environment information of the feed detection box, and sends the preprocessed information to the internal environment performance module through the processor. The internal environment performance module performs stability analysis on the internal environment of the feed detection box 4 during the detection period, generates an internal environment stability signal or an internal environment deviation signal and sends it to the processor. After receiving the internal environment deviation signal, the processor sends an adjustment instruction to the internal environment adjustment mechanism, and the internal environment adjustment mechanism performs corresponding adjustments to the detection environment, realizes analysis and automatic adjustment of the detection environment, reduces the impact of the detection environment on the accuracy of the detection results, and plays an auxiliary role in ensuring the normal and stable operation of the detection equipment.

[0093] The above formulas are obtained by collecting a large amount of data for software simulation and selecting a formula that is close to the actual value. The formulas are dimensionless and calculated numerically. The coefficients in the formulas are set by technical personnel in this field according to actual conditions. As for the size of the coefficients, as long as it does not affect the proportional relationship between the parameters and the quantized values, it can be. For example, the internal stability coefficient NWXs is proportional to the value of the brightness deviation LPZ.

[0094] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A material feeding test detection device for an LCD display housing, comprising a main conveying mechanism and a material feeding detection box (4), wherein the material feeding detection box (4) is located near the output side of the main conveying mechanism, and is characterized in that: The main conveying mechanism is composed of a feed conveyor belt (1), a roller mounting frame (3) and a feed conveyor roller (6), wherein the feed conveyor rollers (6) are located on both sides of the roller mounting frame (3) and are rotatably connected thereto via bearings, and one group of the feed conveyor rollers (6) is driven by a motor, the feed conveyor belt (1) passes around the outside of the two groups of feed conveyor rollers (6), and a plurality of groups of frame support columns (2) are fixedly provided at the bottom of the roller mounting frame (3) by bolts; the feed inspection box (4) is fixedly provided on the top of the roller mounting frame (3), and openings are provided on both sides of the feed inspection box (4); The feed inspection box (4) is equipped with an ultrasonic flaw detector, a surface defect visual scanner, an internal environment detection module, an internal environment adjustment mechanism and a shell clamping transfer mechanism; a control display panel (5) is fixedly arranged on the front of the feed inspection box (4); the ultrasonic flaw detector, the surface defect visual scanner and the internal environment detection module are all communicatively connected to the control display panel (5); the control display panel (5) comprises a processor, a database, a feed fusion analysis module, a data preprocessing module, an internal environment display module and an equipment automatic inspection module; the processor is communicatively connected to the database, the feed fusion analysis module, the data preprocessing module and the internal environment display module; The feed fusion analysis module performs fusion analysis on the detection data of the LCD liquid crystal display screen shell, determines whether the LCD liquid crystal display screen shell is a high-quality, good-quality or low-quality product, and sends a high-quality signal, a good-quality signal or a low-quality signal to the processor; the data preprocessing module preprocesses the internal environment information of the feed inspection box, and sends the preprocessed information to the internal environment performance module through the processor; the internal environment performance module performs stability analysis on the internal environment of the feed inspection box (4) during the detection period, generates an internal environment stability signal or an internal environment deviation signal, and sends the internal environment stability signal or the internal environment deviation signal to the processor; The internal environment detection module comprises a temperature sensor, a humidity sensor, a dust concentration sensor and a brightness sensor, the temperature sensor, the humidity sensor, the dust concentration sensor and the brightness sensor are one or more groups, and the temperature sensor, the humidity sensor, the dust concentration sensor and the brightness sensor are all arranged on the inner wall of the feed detection box (4); the internal environment adjustment mechanism adjusts the temperature, humidity and brightness in the feed detection box (4), and is used to filter dust from the air in the feed detection box (4); The preprocessing process of the data preprocessing module includes: A detection period is set, and multiple groups of internal environment information within the detection period are obtained, the internal environment information including the temperature, humidity, dust concentration and brightness of the detection environment; the multiple groups of temperatures within the detection period are summed and averaged to obtain the temperature average value within the feed detection box (4); the multiple groups of humidity within the detection period are summed and averaged to obtain the humidity average value within the feed detection box (4); the multiple groups of dust concentration within the detection period are summed and averaged to obtain the dust concentration average value within the feed detection box (4); the multiple groups of brightness within the detection period are summed and averaged to obtain the brightness average value within the feed detection box (4); and the temperature average value, humidity average value, dust concentration average value and brightness average value are sent to the internal environment display module through the processor; The analysis process of the internal environment performance module includes: The environmental pre-optimization information is obtained through the database, and the environmental pre-optimization information includes the optimal temperature range, the optimal humidity range, the dust concentration threshold and the optimal brightness range when the feed detection box (4) is detected. The maximum value and the minimum value of the optimal temperature range are summed and averaged to obtain the optimal temperature value, the maximum value and the minimum value of the optimal humidity range are summed and averaged to obtain the optimal humidity value, the maximum value and the minimum value of the optimal brightness range are summed and averaged to obtain the optimal brightness value, and the dust concentration threshold is marked as the optimal dust value; The average temperature, average humidity, average dust concentration and average brightness of the detection period are obtained, and the absolute value of the difference between the average temperature and the optimal temperature value is marked as the temperature deviation value, the absolute value of the difference between the average humidity and the optimal humidity value is marked as the humidity deviation value, and the absolute value of the difference between the average brightness and the optimal brightness value is marked as the brightness deviation value; the temperature deviation threshold, humidity deviation threshold and brightness deviation threshold are obtained through the database, and the temperature deviation value, humidity deviation value and brightness deviation value are compared with the corresponding thresholds respectively, and the dust concentration average is numerically compared with the optimal dust value; If the temperature deviation value, the humidity deviation value, and the brightness deviation value are all less than the corresponding threshold value and the dust concentration average value is less than the optimal dust value, an internal environment stability signal is generated and sent to the processor; otherwise, the temperature deviation value, the humidity deviation value, the brightness deviation value, and the dust concentration average value are normalized and analyzed, and the internal stability coefficient of the feeding detection box (4) during the detection period is obtained through the normalized analysis and processing; The internal stability threshold is obtained through the database, and the internal stability coefficient of the detection period is compared with the internal stability threshold. If the internal stability coefficient is less than the internal stability threshold, an internal environment stability signal is generated and sent to the processor; if the internal stability coefficient is greater than or equal to the internal stability threshold, an internal environment deviation signal is generated and sent to the processor; After receiving the internal environment stabilization signal, the processor does not make any feedback; after receiving the internal environment deviation signal, the processor sends an adjustment instruction to the internal environment adjustment mechanism, and the internal environment adjustment mechanism adjusts the temperature, humidity and brightness in the feed inspection box (4) accordingly, and reduces the dust concentration in the feed inspection box (4); The processor is connected to the equipment automatic inspection module through communication. The equipment automatic inspection module performs equipment quality inspection on the ultrasonic flaw detector and the surface defect visual scanner when the inspection operation is ready to start on the day, and generates a normal equipment signal or an abnormal equipment signal. The specific operation process of the automatic inspection module includes: The fault information and time limit information of the ultrasonic flaw detector and the surface defect visual scanner are respectively obtained through the database. The fault information of the ultrasonic flaw detector includes the total number of historical faults of the ultrasonic flaw detector and the number of faults in the past three months, and the time limit information of the ultrasonic flaw detector includes the total working time and life limit of the ultrasonic flaw detector; the fault information of the surface defect visual scanner includes the total number of historical faults of the surface defect visual scanner and the number of faults in the past three months, and the time limit information of the surface defect visual scanner includes the total working time and life limit of the surface defect visual scanner; The fault information and time limit information of the ultrasonic flaw detector are numerically calculated to obtain the flaw detector quality coefficient, and the fault information and time limit information of the surface defect visual scanner are numerically calculated to obtain the scanner quality coefficient; the flaw detector quality threshold and the scanner quality threshold are obtained through the database, and the flaw detector quality coefficient and the scanner quality coefficient are numerically compared with the corresponding thresholds; If the quality coefficient of the flaw detector and the quality coefficient of the scanner are both less than or equal to the corresponding threshold value, it is determined that the feed inspection box (4) can perform normal inspection of the LCD liquid crystal display screen shell, and a normal device signal is generated and sent to the processor; otherwise, it is determined that the feed inspection box (4) cannot perform normal inspection of the LCD liquid crystal display screen shell, and an abnormal device signal is generated and sent to the processor; The processor is communicatively connected to the alarm reminder module, which consists of an alarm, a red light and a green light. After receiving a normal signal from the equipment, the processor sends a control command of "turn on the green light" to the alarm reminder module, and the green light in the alarm reminder module turns on; after receiving an abnormal signal from the equipment, the processor sends a control command of "turn on the red light and sound an alarm" to the alarm reminder module, and the red light in the alarm reminder module flashes and the alarm sounds.

2. The device for testing the incoming material of an LCD display housing according to claim 1, characterized in that: The specific analysis process of the input fusion analysis module is as follows: The inspection data of the LCD display housing is obtained, including the inspection results of the ultrasonic flaw detector and the defect scanning results of the surface defect visual scanner. The inspection results include no damage, benign damage and severe damage, and the defect scanning results include no defect, benign defect and severe defect. The non-damage result is assigned a flaw detection value of 1, the benign damage result is assigned a flaw detection value of 2, and the severe damage result is assigned a flaw detection value of 3; the non-defect result is assigned a defect scan value of 1, the benign defect result is assigned a defect scan value of 2, and the severe defect result is assigned a defect scan value of 3; Multiply the flaw detection value of the flaw detection result by the defect scanning value of the defect scanning result, and calibrate the product of the two as the quality inspection value. If the value of the quality inspection value is 1 or 2, the corresponding LCD liquid crystal display shell is judged to be a good product, and a good product signal is generated and sent to the processor; if the value of the quality inspection value is 4, the corresponding LCD liquid crystal display shell is judged to be a good product, and a good product signal is generated and sent to the processor; if the value of the quality inspection value is 6 or 9, the corresponding LCD liquid crystal display shell is judged to be a bad product, and a bad product signal is generated and sent to the processor.

3. The device for testing the incoming material of an LCD display housing according to claim 2, characterized in that: After receiving the high-quality signal, the processor sends a control instruction to make the shell clamping transfer mechanism put the corresponding LCD liquid crystal display shell into the high-quality conveying mechanism, and the high-quality conveying mechanism continues to convey the corresponding LCD liquid crystal display shell outward; After receiving the good product signal, the processor issues a control instruction to make the shell clamping transfer mechanism put the corresponding LCD screen shell into the good product conveying mechanism, and the good product conveying mechanism conveys the corresponding LCD screen shell to the re-inspection area; the re-inspection area is a temporary storage area for good products, waiting for the operator to conduct a second inspection of the good products later; After receiving the defective product signal, the processor sends a control instruction to make the shell clamping transfer mechanism put the corresponding LCD liquid crystal display shell into the defective product conveying mechanism, and the defective product conveying mechanism conveys the corresponding LCD liquid crystal display shell to the scrapping area; the scrapping area is a temporary storage area for defective products, waiting for the operator to transport the defective products away and scrap them later.

4. A detection method for the material test detection device of the LCD liquid crystal display housing according to any one of claims 1 to 3, characterized in that: The following steps are involved: Step 1: When the inspection operation is ready for the day, the automatic inspection module of the equipment performs equipment quality inspection on the ultrasonic flaw detector and the surface defect visual scanner, generates a normal equipment signal or an abnormal equipment signal, and starts preparing for the LCD display shell inspection operation for the day after the normal equipment signal is generated. After the abnormal equipment signal is generated, the operator replaces the internal ultrasonic flaw detector or surface defect visual scanner, and then performs the LCD display shell inspection operation after the replacement is completed; Step 2: When the LCD display screen shell is inspected, the main conveying mechanism conveys the LCD display screen shell into the in-feed inspection box (4). After the LCD display screen shell enters the in-feed inspection box (4), the main conveying mechanism stops conveying. The ultrasonic flaw detector and the surface defect visual scanner in the in-feed inspection box (4) perform quality inspection and analysis on the LCD display screen shell, and send the inspection and analysis data to the in-feed fusion analysis module through the processor. Step 3: The feed fusion analysis module performs fusion analysis based on the detection analysis data and generates a superior signal, a good signal or a inferior signal, and sends the superior signal, the good signal or the inferior signal to the processor; After receiving the good product signal, the processor issues a control instruction to make the shell clamping transfer mechanism put the corresponding LCD liquid crystal display shell into the good product conveying mechanism, and the good product conveying mechanism continues to convey the corresponding LCD liquid crystal display shell outward; after receiving the good product signal, the processor issues a control instruction to make the shell clamping transfer mechanism put the corresponding LCD liquid crystal display shell into the good product conveying mechanism, and the good product conveying mechanism conveys the corresponding LCD liquid crystal display shell to the re-inspection area; after receiving the bad product signal, the processor issues a control instruction to make the shell clamping transfer mechanism put the corresponding LCD liquid crystal display shell into the bad product conveying mechanism, and the bad product conveying mechanism conveys the corresponding LCD liquid crystal display shell to the scrapping area; Step 4: Repeat steps 2 and 3 to continuously convey and inspect the LCD display housing.

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