CN115015119A - AOI (automated optical inspection) polishing imaging - Google Patents
AOI (automated optical inspection) polishing imaging Download PDFInfo
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- CN115015119A CN115015119A CN202210643724.2A CN202210643724A CN115015119A CN 115015119 A CN115015119 A CN 115015119A CN 202210643724 A CN202210643724 A CN 202210643724A CN 115015119 A CN115015119 A CN 115015119A
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
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- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
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Abstract
The invention discloses an AOI (automated optical inspection) polishing imaging device, which relates to the technical field of camera module detection and comprises a mounting plate, wherein a support frame is arranged on the front side of the mounting plate, four fixing supports are arranged on the bottom of the support frame in an annular mode, a sliding groove is formed in each fixing support, a fixing frame and a first mounting block which extend to the outside of the sliding groove are connected in the sliding groove in a sliding mode, the fixing frame and the first mounting block are respectively arranged on the left side and the right side of the sliding groove, a second mounting block is arranged on the right side of the first mounting block, a detection light source is arranged between the first mounting block and the second mounting block, the AOI polishing imaging device is characterized in that the light source, the polishing mode and the detection algorithm are improved to a certain extent by using an automatic optical detection technology, the detection and the distinguishing of a chip surface and the upper surface and the lower surface of glass are realized, and the false detection rate and the detection omission rate are reduced, the production efficiency is improved.
Description
Technical Field
The invention relates to the technical field of camera module detection, in particular to AOI (automatic optical inspection) polishing imaging.
Background
At camera module concatenation in-process, because various reasons, spare part inevitable can produce multiple defect, including the scratch that appears at random on chip face and glass surface, defects such as filth, the existence of these defects has reduced the performance of product, influence the normal use and the user experience of product and feel, cause certain economic loss for the producer, nevertheless the component produces in the ultra-clean workshop in process of production, still inevitable can introduce dust pollution, consequently, detect component surface defect and be indispensable operation.
The traditional defect detection method is an artificial visual detection method, a large number of industrial workers still perform the task in the industries such as mobile phones, flat panel displays, solar energy, lithium batteries and the like at present, the artificial visual detection method needs to be performed under the condition of intense light, the eye injury of detection personnel is large, the defects of strong subjectivity, limited space and time resolution of human eyes, high detection uncertainty, easy generation of ambiguity, low efficiency and the like exist, and the detection requirements of high speed and high resolution in modern industry are difficult to meet.
Disclosure of Invention
The invention aims to at least solve one of the technical problems in the prior art, provides AOI (automated optical inspection) polishing imaging, and can solve the problems that an artificial vision detection method needs to be carried out under a strong-light illumination condition, the eye damage to detection personnel is great, the subjectivity is strong, and the space and time resolution of the eye are limited.
In order to achieve the purpose, the invention provides the following technical scheme: AOI formation of image of polishing, including the mounting panel, the front side of mounting panel is provided with the support frame, and the bottom of support frame is provided with four fixed bolsters, and four fixed bolsters are the bottom that the annular mode set up at the support frame, have seted up the spout on the fixed bolster, and the inside sliding connection of spout has mount and the first installation piece that extends to the spout outside, and the mount sets up the left and right sides at the spout respectively with first installation piece, and the right side of first installation piece is provided with the second installation piece, is provided with the testing light source between first installation piece and the second installation piece, is provided with light source handling device on the first installation piece.
Preferably, the front side of mounting panel is opened and is equipped with the shifting chute, the inside sliding connection of shifting chute have with support frame fixed surface be connected the slider, the inner wall of shifting chute rotate be connected with the slider internal thread threaded rod of threaded connection, the top of threaded rod is rotated the inside of running through shifting chute and mounting panel and is extended to the outside of mounting panel.
Preferably, one side of the fixing frame close to the first mounting block is fixedly connected with a positioning block, one side of the first mounting block close to the fixing frame is provided with a positioning groove in sliding connection with the surface of the positioning block, the internal thread of the fixing frame is connected with a fixing bolt, and one end thread of the fixing bolt penetrates through the fixing frame and the positioning block and extends to the inside of the first mounting block.
Preferably, the light source loading and unloading device comprises an installation rod, one side of the installation rod, which is close to the first installation block, is fixedly connected with the surface of the first installation block, one side of the second installation block, which is close to the installation rod, is provided with an installation groove in sliding connection with the surface of the installation rod, one side of the installation rod is provided with a fixing groove, the inside of the second installation block is provided with a power groove communicated with the inside of the installation groove, the inside of the power groove is in sliding connection with a fixing rod extending to the inside of the fixing groove, and the cross section of the fixing rod and the cross section of the power groove are in an L shape.
Preferably, the inner wall of the power groove is fixedly connected with a spring, and one end of the spring, which is close to the fixing rod, is fixedly connected with the surface of the fixing rod.
When the AOI polishing imaging is used, the specific operation steps are as follows:
s1, placing the detection light source between the first mounting block and the second mounting block by a worker, enabling the two fixing rods to move relatively close to each other, compressing the spring, enabling the mounting rods to slide into the mounting groove, loosening the fixing rods, resetting the spring to enable the fixing rods to slide into the fixing grooves, and accordingly achieving mounting and fixing of the first mounting block and the second mounting block and enabling the position of the detection light source to be fixed;
and S2, dividing the light source into red, green and white colors for different detection surfaces, wherein the upper surface of the glass uses red light, the lower surface of the glass uses white light, and the surface of the chip uses green light.
S3, aiming at the polishing imaging device, by designing corresponding image acquisition software, the combination of software and hardware is achieved, different shooting parameters can be set for different types of products, and therefore accurate detection images can be obtained quickly and conveniently;
s4, for different types of products, a multi-surface detection mode or a single-surface detection mode can be set, the multi-surface detection is for the products with glass sheets, and the single-surface detection can be selected for other products;
s5, selecting images in image acquisition software: under the mode of multi-surface detection, the upper surface, the lower surface, the chip surface and the single-surface detection can be selected, and the detection image and the positioning image can be selected; after selecting a certain face, the hardware prepares for the next camera to capture an image: turning on a light source of a corresponding layer, moving a rotating shaft, focusing, setting exposure, and printing the hardware execution time of the message bar at the moment;
s6, selecting 'loading local pictures', 'one-key loading' or 'acquiring single frame', 'real-time acquisition', 'one-key acquisition', 'local picture loading' to select a local image to be displayed in a currently selected window, selecting a folder by 'one-key loading', automatically imaging to a corresponding window according to the name of the picture in the folder, and 'acquiring single frame' to control a camera to acquire and display the single frame image; the one-key acquisition can respectively acquire images of three surfaces according to the parameters of the three surfaces and present the images to corresponding window regions;
s7, control of a focusing shaft: the adjustment of the focal length is achieved by controlling the Z-axis movement of the camera. The motion control of the axis can be accurate to millimeter, and the defects of three layers can be accurately imaged through focal length adjustment. The movement speed of the shaft can be adjusted, the current position of the shaft can be read, the parameter adjustment of a mechanic is facilitated, and the focal distance of the current position and the focal distance of the current layer can be calculated through 'focal distance offset calculation';
s8, light source rotation axis control: different product outward appearances are different, and green light source need rotate to suitable angle, just can make light beat on the chip face uniformly, and certain region is too bright can lead to the false retrieval. The motor controls the angle of the light source, the speed and the rotating angle of the shaft can be manually controlled, the control is more convenient and accurate than manual control, and the shaft can automatically rotate to a set photographing angle during image collection;
s9, the three layers may be set up respectively: the exposure time, the selection of the illuminating light source, the focal length and the image acquisition waiting time are detected, the imaging effect can be influenced by the parameters, the image can be adjusted according to the actual condition, the defect part of the image can be highlighted, the subsequent detection is convenient, the brightness of the image can be influenced by the exposure time, the longer the exposure is, the brighter the obtained image is, the red, green and white three colors of the illuminating light source can be selected, the green light source is more suitable for the lower surface and the chip surface of the glass surface, the red light source is suitable for the illumination of the upper surface, and the white light source is used for positioning the image. If the camera shakes due to the movement of the Z axis of the camera, the picture is not clear, the waiting time for picture taking can be set, and the influence caused by shaking is reduced;
and S10, saving the parameters, reading the parameters and saving the images, wherein the parameters can be saved locally, and the parameters in the text can be automatically read without resetting the parameters when software is subsequently opened. The picture is saved by one key, the folder named at the current time is automatically generated in the currently selected folder, and the picture is named and saved according to different layers;
s11, message column: the time, operation and result of printing execution can know whether the current operation is normally executed or not through the printing information, and if a fault occurs, the reason of the problem can be accurately found.
Preferably, in S4, when the product is detected to be multi-surface, the three imaging windows on the left side respectively display the pictures of the upper surface, the lower surface and the chip surface of the glass, the settable parameters on the right side are matched with each surface, and when a single surface is detected, the detection image and the positioning image are displayed.
Compared with the prior art, the invention has the beneficial effects that:
(1) this AOI formation of polish image through using automatic optical detection technique, has improved light source, the mode of polishing and detection algorithm to a certain extent, has realized the detection and the differentiation of surface about chip face and the glass, has reduced the false retrieval rate and the missed measure rate that detect, has improved production efficiency.
(2) This AOI formation of light, polish the chip face through the green light source that uses four not equidirectionals, can reduce the screen printing and shelter from the shadow area that produces, defect on the edge also can be clapped very clearly, reduce the leak detection rate, polish from the side simultaneously, make prominent dirty defect brighter more clear, be different from photosensitive element, can acquire high-quality image, reduce irrelevant background information, effectively reduced the false retrieval rate, form the imaging effect that is favorable to image processing, reduce visual detection system's the complexity and to the degree of difficulty of image processing algorithm.
(3) This AOI formation of light, make the inside that the dead lever slided into the fixed slot through spring return, thereby realize that the installation of first installation piece and second installation piece is fixed, make the position of testing light source obtain fixedly simultaneously, and make the loading and unloading of testing light source more convenient, make the testing light source when breaking down to a certain extent simultaneously, the staff can maintain the testing light source more conveniently, and make the later maintenance of testing light source more convenient, thereby make the testing light source move more smoothly, and make the staff can make things convenient for the using device more.
(4) This AOI formation of image of polishing, through the inside of the first installation piece of fixing bolt back-out first installation piece and the first installation piece of screw in, thereby realize the fixed position of first installation piece and the fixed position of first installation piece, make first installation piece can remove in the inside of spout more smoothly, make the position control of first installation piece and testing light source more convenient, thereby make the staff can make four testing light source's check point gathering more smoothly at a bit, and make the data that testing light source detected more accurate, thereby make the staff can make things convenient for the using device more.
(5) This AOI formation of polishing, product outward appearance through the difference differs, and green light source need rotate to suitable angle, just can make light beat on the chip face uniformly, and certain region is bright can lead to the false retrieval. Through motor control light source angle, the speed and the rotation angle of axle can both the manual control, and it is more convenient and accurate than manual control, can autogiration reach the angle of shooing that sets up when adopting the picture.
Drawings
The invention is further illustrated with reference to the following figures and examples:
FIG. 1 is a schematic structural diagram of AOI optical imaging according to the present invention;
FIG. 2 is a schematic view of a mounting bracket of the present invention;
FIG. 3 is a schematic front plan view of a mounting bracket of the present invention;
FIG. 4 is a left side plan view of the mounting plate of the present invention;
fig. 5 is a top plan view of a first mounting block of the present invention.
Reference numerals: 1. mounting a plate; 2. a moving groove; 3. a threaded rod; 4. a support frame; 5. fixing a bracket; 6.a chute; 7. a fixed mount; 8. fixing the bolt; 9. a first mounting block; 10. a second mounting block; 11. detecting a light source; 12. a slider; 13. positioning blocks; 14. positioning a groove; 15. mounting a rod; 16. mounting grooves; 17. fixing grooves; 18. fixing the rod; 19. a spring; 20. and a power groove.
Detailed Description
Referring to fig. 1-3, the present invention provides a technical solution: the AOI polishing imaging device comprises a mounting plate 1, wherein a support frame 4 is arranged on the front side of the mounting plate 1, a light source adjusting guide rail is arranged at the top of the support frame 4, four fixing supports 5 are arranged at the bottom of the support frame 4 in an annular mode, an external camera is arranged on the support frame 4 and is positioned among the four fixing supports 5, the camera can take pictures through the camera, the fixing supports 5 can move through the mutual matching of an external power device and the light source adjusting guide rail, a chute 6 is formed in each fixing support 5, a fixing frame 7 and a first mounting block 9 which extend to the outside of the chute 6 are connected in a sliding mode in the chute 6, the fixing frame 7 and the first mounting block 9 are respectively arranged on the left side and the right side of the chute 6, a second mounting block 10 is arranged on the right side of the first mounting block 9, and a detection light source 11 is arranged between the first mounting block 9 and the second mounting block 10, the detection light source 11 is of an existing structure, and is not described in detail herein, the detection light source 11 can be matched with light sources of different colors, and the first mounting block 9 is provided with a light source assembling and disassembling device.
Referring to fig. 3-5, further, a moving slot 2 is opened at the front side of the mounting plate 1, a sliding block 12 fixedly connected to the surface of the supporting frame 4 is slidably connected to the inside of the moving slot 2, a threaded rod 3 in threaded connection with the inside of the sliding block 12 is rotatably connected to the inner wall of the moving slot 2, and the top end of the threaded rod 3 rotatably penetrates through the moving slot 2 and the inside of the mounting plate 1 and extends to the outside of the mounting plate 1.
Make threaded rod 3 rotate through the staff to the position that makes the z axle direction of device obtains adjusting, makes the staff can make things convenient for more use device, makes the device can detect more conveniently simultaneously.
Furthermore, a positioning block 13 is fixedly connected to one side of the fixing frame 7 close to the first mounting block 9, a positioning groove 14 slidably connected with the surface of the positioning block 13 is formed in one side of the first mounting block 9 close to the fixing frame 7, a fixing bolt 8 is connected to the internal thread of the fixing frame 7, one end thread of the fixing bolt 8 penetrates through the fixing frame 7 and the internal part of the positioning block 13 and extends to the internal part of the first mounting block 9, the fixing bolt 8 is rotated forward and backward by a worker, so that the fixing bolt 8 is screwed out of the first mounting block 9 and screwed into the first mounting block 9, the position fixing of the first mounting block 9 and the position fixing of the first mounting block 9 are realized, the first mounting block 9 can move in the sliding groove 6 more smoothly, the position adjustment of the first mounting block 9 and the detection light source 11 is more convenient, and the worker can more smoothly gather the detection points of the four detection light sources 11 at one point, and the data detected by the detection light source 11 is more accurate, so that the device can be used more conveniently by workers.
Light source handling device is including installation pole 15, installation pole 15 is close to one side of first installation piece 9 and is connected with the fixed surface of first installation piece 9, second installation piece 10 is close to one side of installation pole 15 and offers and installs 15 surface sliding connection's mounting groove 16, fixed slot 17 has been offered to one side of installation pole 15, the power groove 20 with the inside intercommunication of mounting groove 16 is offered to the inside of second installation piece 10, the inside sliding connection of power groove 20 has the dead lever 18 that extends to fixed slot 17 inside, dead lever 18 is L shape with the cross-section of power groove 20.
Further, a spring 19 is fixedly connected to the inner wall of the power groove 20, one end of the spring 19 close to the fixing rod 18 is fixedly connected to the surface of the fixing rod 18, and the spring 19 can be compressed and reset by the forward and backward movement of the fixing rod 18.
Make light source 11 put into between first installation piece 9 and second installation piece 10 through the staff, make two dead levers 18 carry out the relative approach removal, spring 19 compresses, and make installation pole 15 slide into the inside of mounting groove 16 after, loosen dead lever 18, spring 19 resets and makes dead lever 18 slide into the inside of fixed slot 17, thereby realize the installation of first installation piece 9 and second installation piece fixedly, make light source 11's position fixed simultaneously, and make light source 11's loading and unloading more convenient, make light source 11 when breaking down to a certain extent simultaneously, the staff can maintain light source more conveniently, and make light source 11's later maintenance more convenient, thereby make light source 11 can operate more smoothly, and make the staff can more conveniently use the device.
When the AOI polishing imaging is used, the specific operation steps are as follows:
s1, placing the detection light source 11 between the first mounting block 9 and the second mounting block 10 by a worker, enabling the two fixing rods 18 to move relatively close to each other, compressing the spring 19, enabling the mounting rod 15 to slide into the mounting groove 16, then loosening the fixing rods 18, resetting the spring 19 to enable the fixing rods 18 to slide into the fixing grooves 17, and accordingly achieving mounting and fixing of the first mounting block 9 and the second mounting block and enabling the position of the detection light source 11 to be fixed;
further, an external camera is used for surface imaging of the precision component, and a 2500-ten-thousand-pixel CCD gigabit Ethernet industrial camera is used, so that the higher the pixel is, the more the details in the picture are, the clearer the details are, the accuracy of defect positioning is improved, and the misjudgment rate of the defect is further reduced.
S2, dividing a light source into red, green and white colors, wherein the red, green and white colors are used for different detection surfaces, the upper surface of the glass uses red light, the lower surface of the glass uses white light, and the chip surface uses green light;
because the green light has shorter wavelength and stronger scattering than the red light, and the red light is easier to transmit air, the power required for forming the light path is larger, so the green light can be emitted farther and brighter than the red light, and the chip surface under the glass sheet can be shot more clearly.
Furthermore, the lighting system comprises a detection light source 11, a light source fixing support 5 and a light source adjusting guide rail;
the light source fixing support 5 can manually adjust the incident angle of the light source, the light source adjusting guide rail can electrically adjust the directions of the four green light sources, and the most suitable angles and directions can be adjusted according to different product structures.
The green light sources in four different directions are used for polishing the chip surface, the shadow area generated by screen printing shielding can be reduced, the defects on the edge can be clearly shot, the omission ratio is reduced, and meanwhile, the green light sources are polished from the side surface, so that the protruding dirty defects are brighter and clearer, the green light sources are different from photosensitive elements, high-quality images can be obtained, irrelevant background information is reduced, the false detection rate is effectively reduced, the imaging effect beneficial to image processing is formed, and the complexity of a visual detection system and the difficulty of an image processing algorithm are reduced.
Through the auxiliary zoom system of outside Z axle, can realize the zooming of the different height aspect of product through the height of adjusting the Z axle that the camera is located to reach and shoot the image that different height aspect can both obtain the high definition.
S3, aiming at the polishing imaging device, by designing corresponding image acquisition software, the combination of software and hardware is achieved, different shooting parameters can be set for different types of products, and therefore accurate detection images can be obtained quickly and conveniently;
s4, for different types of products, a multi-surface detection mode or a single-surface detection mode can be set, the multi-surface detection is for the products with glass sheets, and the single-surface detection can be selected for other products;
further, when the product is detected in multiple planes, the three imaging windows on the left side respectively display pictures of the upper surface, the lower surface and the chip surface of the glass, the parameters which can be set on the right side are matched with each plane, and when a single plane is detected, the detection image and the positioning image are displayed.
S5, selecting images in image acquisition software: under the mode of multi-surface detection, the upper surface, the lower surface, the chip surface and the single-surface detection can be selected, and the detection image and the positioning image can be selected; after selecting a certain face, the hardware prepares for the next camera to capture an image: turning on a light source of a corresponding layer, moving a rotating shaft, focusing, setting exposure, and printing the hardware execution time of the message bar at the moment;
s6, selecting 'loading local picture', 'one-key loading' or 'acquiring single frame', 'real-time acquisition', 'one-key acquisition', 'loading local picture' to select a local image to be displayed in a currently selected window, selecting a folder by 'one-key loading', automatically imaging to a corresponding window according to the name of the picture in the folder, and 'acquiring single frame' to control a camera to acquire and display the single frame image; the one-key acquisition can respectively acquire images of three surfaces according to the parameters of the three surfaces and present the images to corresponding window regions;
s7, control of a focusing shaft: the adjustment of the focal length is achieved by controlling the movement of the Z-axis of the camera. The motion control of the axis can be accurate to millimeter, and the defects of three layers can be accurately imaged through focal length adjustment. The movement speed of the shaft can be adjusted, the current position of the shaft can be read, the parameter adjustment of a mechanic is facilitated, and the focal distance of the current position and the focal distance of the current layer can be calculated through 'focal distance offset calculation';
s8, light source rotation axis control: different product outward appearances are different, and green light source need rotate to suitable angle, just can make light beat on the chip face uniformly, and certain region is too bright can lead to the false retrieval. The motor controls the angle of the light source, the speed and the rotating angle of the shaft can be manually controlled, the control is more convenient and accurate than manual control, and the shaft can automatically rotate to a set photographing angle during image collection;
s9, the three layers may be set up respectively: the exposure time, selection of the illumination light source, the focal length and the drawing waiting time are detected. These parameters all can influence the formation of image effect, need adjust according to actual conditions, make the picture can highlight the defect part, make things convenient for follow-up detection, and exposure time can influence the luminance of image, and the longer the exposure, the brighter the image that obtains, illumination light source has red green white three kinds of colours to select, and green light source more is fit for glass face lower surface and chip face, and red light source is fit for the illumination of upper surface, and white light source is used in the location image. If the camera shakes due to the movement of the Z axis of the camera, the picture is not clear, the waiting time for picture taking can be set, and the influence caused by shaking is reduced;
and S10, parameter storage, parameter reading and image storage functions. The parameters can be stored locally, software is opened subsequently, the parameters in the text can be automatically read without resetting the parameters, the 'picture is saved by one key', and the folder named at the current time can be automatically generated in the currently selected folder. The pictures are named and stored according to different layers;
s11, message column: the time, operation and result of printing execution can know whether the current operation is normally executed or not through the printing information, and if a fault occurs, the reason of the problem can be accurately found.
By using an automatic optical detection technology, a light source, a polishing mode and a detection algorithm are improved to a certain extent, the detection and the distinguishing of the chip surface and the upper and lower surfaces of the glass are realized, the false detection rate and the missing detection rate of the detection are reduced, and the production efficiency is improved.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (7)
- AOI formation of image of polishing, including mounting panel (1), its characterized in that: the front side of mounting panel (1) is provided with support frame (4), the bottom of support frame (4) is provided with four fixed bolster (5), four fixed bolster (5) are the bottom that the annular mode set up at support frame (4), spout (6) have been seted up on fixed bolster (5), the inside sliding connection of spout (6) has mount (7) and the first installation piece (9) that extend to spout (6) outside, mount (7) and first installation piece (9) set up the left and right sides at spout (6) respectively, the right side of first installation piece (9) is provided with second installation piece (10), be provided with between first installation piece (9) and second installation piece (10) and detect light source (11), be provided with light source handling device on first installation piece (9).
- 2. The AOI gloss imaging according to claim 1, wherein: the front side of mounting panel (1) is opened and is equipped with shifting chute (2), and the inside sliding connection of shifting chute (2) has slider (12) of being connected with support frame (4) fixed surface, and the inner wall of shifting chute (2) rotates threaded rod (3) that are connected with slider (12) internal thread, and the top of threaded rod (3) is rotated and is run through the inside of shifting chute (2) and mounting panel (1) and extend to the outside of mounting panel (1).
- 3. The AOI gloss imaging according to claim 2, wherein: one side fixedly connected with locating piece (13) that mount (7) are close to first installation piece (9), one side that first installation piece (9) are close to mount (7) is seted up with locating piece (13) surface sliding connection's constant head tank (14), the inside threaded connection of mount (7) has fixing bolt (8), the one end screw thread of fixing bolt (8) runs through the inside of mount (7) and locating piece (13) and extends to the inside of first installation piece (9).
- 4. The AOI gloss imaging according to claim 1, wherein: light source handling device is including installation pole (15), one side that installation pole (15) are close to first installation piece (9) is connected with the fixed surface of first installation piece (9), one side that second installation piece (10) are close to installation pole (15) is seted up and is installed pole (15) surface sliding connection's mounting groove (16), fixed slot (17) have been seted up to one side of installation pole (15), power groove (20) with the inside intercommunication of mounting groove (16) are seted up to the inside of second installation piece (10), the inside sliding connection of power groove (20) has dead lever (18) that extend to fixed slot (17) inside, the cross-section of dead lever (18) and power groove (20) is the L shape.
- 5. The AOI gloss imaging according to claim 4, wherein: the inner wall of the power groove (20) is fixedly connected with a spring (19), and one end, close to the fixing rod (18), of the spring (19) is fixedly connected with the surface of the fixing rod (18).
- The use method of AOI (automated optical inspection) polishing imaging is characterized by comprising the following steps: the specific operation steps are as follows:s1, the detection light source (11) is placed between the first installation block (9) and the second installation block (10) through a worker, the two fixing rods (18) move relatively close to each other, the spring (19) compresses, the installation rod (15) slides into the installation groove (16), then the fixing rods (18) are loosened, the spring (19) resets to enable the fixing rods (18) to slide into the fixing grooves (17), and therefore installation and fixation of the first installation block (9) and the second installation block are achieved, and meanwhile the position of the detection light source (11) is fixed;and S2, dividing the light source into red, green and white colors for different detection surfaces, wherein the upper surface of the glass uses red light, the lower surface of the glass uses white light, and the surface of the chip uses green light.S3, aiming at the polishing imaging device, by designing corresponding image acquisition software, the combination of software and hardware is achieved, different shooting parameters can be set for different types of products, and therefore accurate detection images can be obtained quickly and conveniently;s4, for different types of products, a multi-surface detection mode or a single-surface detection mode can be set, the multi-surface detection is for the products with glass sheets, and the single-surface detection can be selected for other products;s5, selecting images in image acquisition software: under the mode of multi-surface detection, the upper surface, the lower surface, the chip surface and the single-surface detection can be selected, and the detection image and the positioning image can be selected; after selecting a certain face, the hardware prepares for the next camera to capture an image: turning on a light source of a corresponding layer, moving a rotating shaft, focusing, setting exposure, and printing the hardware execution time of the message bar at the moment;s6, selecting 'loading local picture', 'one-key loading' or 'acquiring single frame', 'real-time acquisition', 'one-key acquisition', 'loading local picture' to select a local image to be displayed in a currently selected window, selecting a folder by 'one-key loading', automatically imaging to a corresponding window according to the name of the picture in the folder, and 'acquiring single frame' to control a camera to acquire and display the single frame image; the one-key acquisition can respectively acquire images of three surfaces according to the parameters of the three surfaces and present the images to corresponding window regions;s7, control of a focusing shaft: the adjustment of the focal length is achieved by controlling the Z-axis movement of the camera. The motion control of the axis can be accurate to millimeter, and the defects of three layers can be accurately imaged through focus adjustment. The movement speed of the shaft can be adjusted, the current position of the shaft can be read, the parameter adjustment of a mechanic is facilitated, and the focal distance of the current position and the focal distance of the current layer can be calculated through 'focal distance offset calculation';s8, light source rotation axis control: different product outward appearances are different, and green light source need rotate to suitable angle, just can make light beat on the chip face uniformly, and certain region is too bright can lead to the false retrieval. The motor controls the angle of the light source, the speed and the rotating angle of the shaft can be manually controlled, the control is more convenient and accurate than manual control, and the shaft can automatically rotate to a set photographing angle during image collection;s9, three levels may be set up: the exposure time, the selection of the illuminating light source, the focal length and the image acquisition waiting time are detected, the imaging effect can be influenced by the parameters, the parameters need to be adjusted according to actual conditions, the defect part of the image can be highlighted, the subsequent detection is convenient, the brightness of the image can be influenced by the exposure time, the longer the exposure is, the brighter the obtained image is, the red, green and white illuminating light sources have three selectable colors, the green light source is more suitable for the lower surface of a glass surface and the chip surface, the red light source is suitable for the illumination of the upper surface, and the white light source is used for positioning the image. If the camera shakes due to the movement of the Z axis of the camera, the picture is not clear, the waiting time for picture taking can be set, and the influence caused by shaking is reduced;and S10, saving the parameters, reading the parameters and saving the images, wherein the parameters can be saved locally, and the parameters in the text can be automatically read without resetting the parameters when software is subsequently opened. The picture is saved by one key, the folder named at the current time is automatically generated in the currently selected folder, and the picture is named and saved according to different layers;s11, message column: the time, operation and result of printing execution can know whether the current operation is normally executed or not through the printing information, and if a fault occurs, the reason of the problem can be accurately found.
- 7. The AOI illuminated imaging of claim 6, wherein: in the step S4, when the product is detected in multiple planes, the three imaging windows on the left side respectively display the pictures of the upper surface, the lower surface and the chip plane of the glass, the parameters which can be set on the right side are matched with each plane, and when a single plane is detected, the detection image and the positioning image are displayed.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117152165A (en) * | 2023-11-01 | 2023-12-01 | 深圳中科精工科技有限公司 | Photosensitive chip defect detection method and device, storage medium and electronic equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117152165A (en) * | 2023-11-01 | 2023-12-01 | 深圳中科精工科技有限公司 | Photosensitive chip defect detection method and device, storage medium and electronic equipment |
| CN117152165B (en) * | 2023-11-01 | 2024-03-22 | 深圳中科精工科技有限公司 | Photosensitive chip defect detection method and device, storage medium and electronic equipment |
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