Online edge grinding AOI detection method, medium and equipment

Abstract

The invention discloses an online edging AOI detection method, a medium and equipment. The method specifically comprises the following steps: S100, cutting glass into a set size by glass cutting equipment; s200, detecting the cut glass by the size defect detection equipment, and if glass surface defects are detected, adjusting the grinding amount and the grinding amount of the edge grinding equipment according to defect types; s300, edge grinding operation is conducted on the glass through edge grinding equipment; s400, the AOI detection equipment detects the grinding amount and the grinding amount of the edged glass, and if the glass detects grinding defects, the grinding equipment conducts grinding adjustment according to defect feedback; and S500, the adjusted edge grinding equipment conducts edge grinding on the glass newly entering the edge grinding equipment, and after edge grinding is completed, the glass enters AOI detection equipment to be re-judged. According to the method, the cut product can be detected, the grinding amount and the grinding amount of the edge grinding equipment are adjusted on line according to the detected cutting defects, and the product quality is improved. Therefore, the cutting defects are made up to the maximum extent.

Description

Technical Field

[0001] The invention relates to the field of glass edge grinding detection, and in particular to an online edge grinding AOI detection method, medium and equipment. Background Art

[0002] During the LCD & OLED processing, the following steps will be followed: glass cutting, first inspection, edge grinding and chamfering, and second inspection. Among them, the edge grinding and chamfering machine is a device for beveling the four sides of the product, vertically grinding the side ends, and grinding the R angle or C angle of the four corners. The above processes can eliminate the stress of the glass after cutting, remove the defects after cutting, ensure the stability of LCD & OLED products, and prepare for the next process;

[0003] At present, after testing the products, if many products are found to be unqualified, the machine can only be shut down for manual debugging, and online debugging cannot be performed, which will cause a waste of the testing process. Summary of the invention

[0004] The technical problem solved by the present invention is to provide an online edge grinding AOI detection method, which can realize online debugging and feedback of detected defects, thereby improving the accuracy of the edge grinding mechanism.

[0005] The technical solution adopted by the present invention to solve the technical problem is: an online edge grinding AOI detection method, comprising a glass cutting device, a size defect detection device, an edge grinding device and an AOI grinding detection device arranged in sequence, and the specific method is:

[0006] S100: Glass cutting equipment cuts glass into set sizes;

[0007] S200: The size defect detection device performs size detection and defect detection on the cut glass. If no defect is detected, no operation is performed. If a glass surface defect is detected, the detected defect type is fed back to the edge grinding device, and the grinding amount and grinding amount of the edge grinding device are adjusted according to the defect type.

[0008] S300: The edge grinding equipment performs edge grinding operation on the glass;

[0009] S400: The AOI inspection equipment detects the grinding amount and polishing amount of the edge-grinded glass. If the glass passes the inspection, no operation is performed. If grinding defects are detected in the glass, the defects are fed back to the edge-grinding equipment, and the grinding equipment makes grinding adjustments based on the defect feedback.

[0010] S500: The adjusted edge grinding equipment edges the glass newly entering the edge grinding equipment. After the edge grinding is completed, the glass enters the AOI inspection equipment for re-inspection. If the glass still has grinding defects, the edge grinding equipment is adjusted again.

[0011] Furthermore, in step S200, when the detected defect on the end face of the glass is a shell defect, the grinding amount of the R angle or C angle required for grinding the edge of the glass is increased according to the detected defect size data, so that the grinding and weaving equipment can remove the shell defect on the glass.

[0012] Furthermore, in step S200, when the detected glass cutting defect is a crack defect, the grinding depth of the grinder is increased according to the distance from the detected crack to the edge of the glass, so that the grinder can grind away the crack of the glass.

[0013] Furthermore, in step S200, when the detected glass cutting defect is a corner defect, the grinding depth of the grinder is increased according to the detected corner distance, so that the grinder can grind the corner portion of the glass flat.

[0014] Furthermore, in the step S200, the grinding amount and the polishing amount of the edge grinding equipment are adjusted according to the defect type. If the size of the glass after edge grinding exceeds the tolerance size set for the glass after the grinding amount and the polishing amount are increased by the edge grinding equipment, the size defect detection equipment will sound an alarm and remove the defective glass.

[0015] Furthermore, in step S400, when the grinding amount is too large, the current ground size is compared with the original size through visual inspection to obtain the over-grinding size, which is fed back to the edge grinding equipment in the previous station to reduce the grinding depth of the edge grinding equipment. The reduced grinding depth is the over-grinding size.

[0016] Furthermore, in step S400, when the grinding amount is too small, the currently ground size is compared with the original size through visual inspection to obtain the grinding missing size, which is fed back to the edge grinding equipment in the previous station to increase the grinding depth of the edge grinding equipment. The increased grinding depth is the grinding missing size.

[0017] Furthermore, in step S400, when there is a deviation in the grinding amount of the R angle or C angle on the upper and lower sides of the glass, the AOI grinding detection equipment detects the grinding depth on the upper and lower sides of the glass, obtains the grinding depth deviation value, and feeds back the grinding depth deviation value to the edge grinding equipment of the previous station, and adjusts the height of the glass during grinding. The adjusted height value is equal to half of the grinding depth deviation value.

[0018] The present invention also discloses a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the above-mentioned online edge grinding AOI detection method are implemented.

[0019] The present invention also discloses a computer device, comprising a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other via the communication bus; wherein:

[0020] The memory is used to store computer programs;

[0021] The processor is used to execute the steps of the above-mentioned online edge grinding AOI detection method by running the program stored in the memory.

[0022] The beneficial effects of the present invention are:

[0023] 1. This method can detect the cut product and adjust the grinding amount and grinding amount of the edge grinding equipment online according to the detected cutting defects, so as to compensate for the cutting defects to the greatest extent.

[0024] 2. This method can detect the ground glass products through AOI grinding detection equipment, and adjust the grinding amount and grinding amount of the edge grinding equipment online according to the detected defects, so as to ensure the accuracy of subsequent product grinding.

[0025] 3. This method can adjust the height of the product during edge grinding in the edge grinding equipment according to the difference in grinding data between the upper and lower sides, so that the consistency of grinding between the upper and lower sides can be guaranteed during subsequent chamfering operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 Schematic diagram of the process of the linear edge grinding AOI inspection method according to an embodiment of the present application.

[0027] Figure 2 Schematic diagram of grinding of the linear edge grinding AOI inspection method according to an embodiment of the present application (the chamfer is the R angle).

[0028] Figure 3 Schematic diagram of grinding of the linear edge grinding AOI inspection method according to an embodiment of the present application (the chamfer is a C angle).

[0029] Figure 4 This is a schematic diagram of the AOI grinding inspection equipment according to an embodiment of the present application.

[0030] Figure 5 This is a schematic diagram of a shell defect according to an embodiment of the present application. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0032] like Figure 1As shown, the embodiment of the present application discloses an online AOI edge grinding detection method, including a glass cutting device, a size defect detection device, an edge grinding device and an AOI grinding detection device arranged in sequence, and the specific method is:

[0033] S100: Glass cutting equipment cuts the glass into set grinding size;

[0034] S200: The size defect detection device performs size detection and defect detection on the cut glass. If no defect is detected, no operation is performed. If a glass surface defect is detected, the detected defect type is fed back to the edge grinding device, and the grinding amount and grinding amount of the edge grinding device are adjusted according to the defect type.

[0035] S300: The edge grinding equipment performs edge grinding operation on the glass;

[0036] S400: The AOI inspection equipment detects the grinding amount and polishing amount of the edge-grinded glass. If the glass passes the inspection, no operation is performed. If grinding defects are detected in the glass, the defects are fed back to the edge-grinding equipment, and the grinding equipment makes grinding adjustments based on the defect feedback.

[0037] S500: The adjusted edge grinding equipment edges the glass newly entering the edge grinding equipment. After the edge grinding is completed, the glass enters the AOI inspection equipment for re-inspection. If the glass still has grinding defects, the edge grinding equipment is adjusted again.

[0038] Specifically, the equipment in this application are all existing equipment, and the specific equipment structure can refer to Patent 202210586024.4, a glass edge grinding and chamfering machine with automatic detection.

[0039] Specifically, it needs to be explained that the grinding amount mentioned above refers to the size of the four sides of the glass, and the grinding amount refers to the grinding size of the upper and lower sides of the glass edge into R angle or C angle. Under normal circumstances, the depth of the upper and lower edges of the glass ground into R angle or C angle should be consistent. The edge grinding equipment will include an upper edge grinding knife and a lower edge grinding knife. If the glass is not in the middle of the upper and lower edge grinding knives when grinding the chamfer, it will cause the upper and lower chamfers to be ground inconsistently, which will lead to grinding errors.

[0040] Specifically, in actual operation, after N glasses have been inspected, if they have the same defect, the edge grinding machine will be adjusted online. N can be 10, 50, 100, etc. This setting can prevent the edge grinding machine from being incorrectly adjusted due to a single defect in a single piece of glass. If N glasses have the same defect, it means that the edge grinding equipment must have an error. Therefore, online adjustment of the edge grinding equipment can prevent the same defect from occurring again in subsequent glass products.

[0041] This method can detect the product after cutting, and adjust the grinding amount and grinding amount of the edge grinding equipment online according to the detected cutting defects, so as to compensate for the cutting defects to the greatest extent. At the same time, this method can detect the glass product after grinding through the AOI grinding detection equipment, and adjust the grinding amount and grinding amount of the edge grinding equipment online according to the detected defects, so as to ensure the accuracy of subsequent product grinding. In addition, a re-judgment step is added to this method, so that the adjusted grinding equipment can be re-inspected on the newly ground glass, so as to detect whether the edge grinding machine is accurately adjusted. If it is not accurately adjusted, it can be re-fine-tuned.

[0042] In this embodiment, in step S200, when the detected defect on the end face of the glass is a shell defect, the grinding amount of the R angle or C angle required for grinding the edge of the glass is increased according to the detected defect size data, so that the grinding and weaving equipment can remove the shell defect on the glass.

[0043] Specifically, when defects are detected, the glass product is photographed and detected through the size defect detection equipment to obtain the product image and the defect size data of the shell defect. The machine vision algorithm is an existing practical algorithm and has not been improved here, so it will not be described in detail.

[0044] Specifically, Figure 5 As shown, the shell defect refers to the fact that the end face of the glass presents a raised shell shape. At this time, the defect can be ground away by grinding. That is, according to the position of the shell defect obtained by the above-mentioned algorithm, the grinding distance of the edge grinding equipment is increased, so that the shell defect can be ground away during the next grinding process, thereby ensuring the quality of the product.

[0045] In this embodiment, in step S200, when the detected glass cutting defect is a crack defect, the grinding depth of the grinder is increased according to the distance from the detected crack to the edge of the glass, so that the grinder can grind away the crack of the glass.

[0046] Specifically, the glass product is photographed and inspected by the size defect detection equipment to obtain the position of the crack, that is, the distance from the crack to the edge of the glass. For example, if the distance from the crack to the edge of the glass is 0.7mm, and if the set grinding amount is 0.6mm, then the grinding amount of the edge grinder in the next step can be modified online to 0.7mm. It must be ensured that the grinding amount of 0.7mm must be within the grinding tolerance range of the product. Then, when the subsequent edge grinding equipment is used for edge grinding, the crack position can be ground off to ensure the quality of the product.

[0047] In this embodiment, in step S200, when the detected glass cutting defect is a corner defect, the grinding depth of the grinder is increased according to the detected corner distance, so that the grinder can grind the corner portion of the glass flat.

[0048] Specifically, the glass product is photographed and inspected by the size defect detection equipment to obtain the position of the missing corner. At this time, the grinding distance of the edge grinding equipment is increased so that the missing corner position can be ground off during the next grinding process, thereby ensuring the quality of the product.

[0049] In this embodiment, in step S200, the grinding amount and the polishing amount of the edge grinding equipment are adjusted according to the defect type. If the size of the glass after edge grinding exceeds the tolerance size set for the glass after the grinding amount and the polishing amount are increased by the edge grinding equipment, the size defect detection equipment will sound an alarm and remove the glass as a defective product.

[0050] Specifically, when adjusting the grinding amount and the grinding amount of the edge grinding equipment, it is necessary to first ensure that after the adjustment, after the edge grinding operation on the product, the edged glass product is still within the tolerance range, thereby ensuring the yield rate of the edged product. If the edge grinding equipment is adjusted so that the edged glass product exceeds its tolerance range, it means that even if the defects of the glass product are removed, the glass product will become a defective product. Therefore, when it is detected that the edged product exceeds its tolerance range, it means that the product cannot be repaired and needs to be labeled as a defective product and removed. This setting can maximize the yield rate of the product.

[0051] In this embodiment, in step S400, when the grinding amount is too large, the grinding size is compared with the original size through visual inspection to obtain the grinding excess size, which is fed back to the edge grinding device of the previous station to reduce the grinding depth of the edge grinding device. The reduced grinding depth is the grinding excess size.

[0052] In step S400, when the grinding amount is too small, the current ground size is compared with the original size through visual inspection to obtain the grinding missing size, which is fed back to the edge grinding equipment in the previous station to increase the grinding depth of the edge grinding equipment. The increased grinding depth is the grinding missing size.

[0053] Specifically, when performing AOI visual inspection, the specific detection principle is: a mark detection point will be set on the glass product. In step S200, the distance from the mark point to the outermost edge will be detected and recorded as A, which is the size of the original product. After the grinding operation, the AOI grinding detection equipment will perform inspection. At this time, the distance from the mark point to the outermost edge is recorded as B, and the grinding amount at this time is C, C=AB. At this time, it is determined whether B is within the qualified range according to the pre-setting. If B is not within the range, it means that the grinding amount is too large, and the grinding distance of the edge grinding equipment is adjusted. According to the difference between the set value and B, the grinding amount C is adjusted so that the subsequent glass can be within the specified range during the edge grinding operation.

[0054] In this embodiment, in step S400, when the R angle or C angle grinding amount on the upper and lower sides of the glass deviates, the AOI grinding detection equipment detects the grinding depth on the upper and lower sides of the glass, obtains the grinding depth deviation value, and feeds back the grinding depth deviation value to the edge grinding equipment of the previous station, and adjusts the height of the glass during grinding. The adjusted height value is half of the grinding depth deviation value.

[0055] Specifically, when performing AOI visual inspection, the upper inspection camera and the lower inspection camera in the AOI grinding inspection equipment inspect the upper and lower sides of the glass respectively. When inspecting the R angle or C angle position, since the R angle or C angle position has a certain grinding depth, the inspection camera will output a black edge when shooting. Different grinding depths will result in different color depths of the output black edge. The color can be converted into grinding depth through the conversion algorithm in the inspection camera, and then the grinding depth data on both sides are compared. If the data is the same, it means that the product is qualified. If the data is different, it means that the grinding position height has deviated. At this time, the height of the product during edge grinding in the edge grinding equipment is adjusted according to the difference in grinding data on the upper and lower sides, so that the consistency of grinding on the upper and lower sides can be guaranteed during subsequent chamfering operations.

[0056] The present invention also discloses a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the above-mentioned online edge grinding AOI detection method are implemented.

[0057] In addition, the computer-readable storage medium of this embodiment may adopt any combination of one or more computer-readable storage media, wherein the computer-readable storage medium includes electrical, optical, electromagnetic, infrared or semiconductor systems, devices or components, or any combination thereof.

[0058] The present invention also discloses a computer device, comprising a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other via the communication bus; wherein:

[0059] The memory is used to store computer programs;

[0060] The processor is used to execute the steps of the above-mentioned online edge grinding AOI detection method by running the program stored in the memory.

[0061] As an embodiment of the present invention, the communication bus mentioned in the above terminal can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. The communication bus can be divided into an address bus, a data bus, a control bus, etc.

[0062] As an implementation mode of the present invention, the communication interface is used for communication between the above-mentioned terminal and other devices.

[0063] As an embodiment of the present invention, the memory may include a random access memory (RAM) or a non-volatile memory, such as at least one disk memory. Optionally, the memory may also be at least one storage device located away from the aforementioned processor.

[0064] As an embodiment of the present invention, the above-mentioned processor can be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it can also be a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components.

[0065] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An online AOI edge grinding inspection method, comprising a glass cutting device, a size defect inspection device, an edge grinding device and an AOI grinding inspection device arranged in sequence, characterized in that: The specific method is: S100: Glass cutting equipment cuts glass into set sizes; S200: The size defect detection device performs size detection and defect detection on the cut glass. If no defect is detected, no operation is performed. If a glass surface defect is detected, the detected defect type is fed back to the edge grinding device, and the grinding amount and grinding amount of the edge grinding device are adjusted according to the defect type. S300: The edge grinding equipment performs edge grinding operation on the glass; S400: The AOI inspection equipment detects the grinding amount and polishing amount of the edge-grinded glass. If the glass passes the inspection, no operation is performed. If grinding defects are detected in the glass, the defects are fed back to the edge-grinding equipment, and the grinding equipment makes grinding adjustments based on the defect feedback. S500: The adjusted edge grinding equipment edges the glass newly entering the edge grinding equipment. After the edge grinding is completed, the glass enters the AOI inspection equipment for re-inspection. If the glass still has grinding defects, the edge grinding equipment is adjusted again.

2. The online edge grinding AOI detection method according to claim 1, characterized in that: In the step S200, when the detected defect on the glass end face is a shell defect, the grinding amount of the R angle or C angle required for grinding the glass edge is increased according to the detected defect size data, so that the grinding and weaving equipment can strip off the shell defect on the glass.

3. The online edge grinding AOI detection method according to claim 1, characterized in that: In the step S200, when the detected glass cutting defect is a crack defect, the grinding depth of the grinder is increased according to the distance from the detected crack to the edge of the glass, so that the grinder can grind away the crack of the glass.

4. The online edge grinding AOI detection method according to claim 1, characterized in that: In the step S200, when the detected glass cutting defect is a corner defect, the grinding depth of the grinder is increased according to the detected corner distance, so that the grinder can grind the corner portion of the glass flat.

5. The online edge grinding AOI detection method according to claim 1, characterized in that: In step S200, the grinding amount and the polishing amount of the edge grinding device are adjusted according to the defect type. If the size of the glass after edge grinding exceeds the tolerance size set for the glass after the grinding amount and the polishing amount are increased, the size defect detection device will sound an alarm and remove the defective glass.

6. The online edge grinding AOI detection method according to any one of claims 1, characterized in that: In step S400, when the grinding amount is too large, the current ground size is compared with the original size through visual inspection to obtain the over-grinding size, which is fed back to the edge grinding equipment in the previous station to reduce the grinding depth of the edge grinding equipment. The reduced grinding depth is the over-grinding size.

7. The online edge grinding AOI detection method according to any one of claims 1, characterized in that: In step S400, when the grinding amount is too small, the current ground size is compared with the original size through visual inspection to obtain the grinding missing size, which is fed back to the edge grinding equipment in the previous station to increase the grinding depth of the edge grinding equipment. The increased grinding depth is the grinding missing size.

8. The online edge grinding AOI detection method according to any one of claims 1, characterized in that: In step S400, when there is a deviation in the grinding amount of the R angle or C angle on the upper and lower sides of the glass, the AOI grinding detection equipment detects the grinding depth on the upper and lower sides of the glass, obtains the grinding depth deviation value, and feeds back the grinding depth deviation value to the edge grinding equipment in the previous station, and adjusts the height of the glass during grinding. The adjusted height value is half of the grinding depth deviation value.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the online edge grinding AOI detection method according to any one of claims 1 to 8 are implemented.

10. A computer device, characterized in that: It includes a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other through the communication bus; wherein: The memory is used to store computer programs; The processor is used to execute the steps of the online edge grinding AOI detection method according to any one of claims 1 to 8 by running the program stored in the memory.

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