An AOI detection device and a detection method

Abstract

The present invention discloses an AOI detection device and a detection method, belonging to the field of liquid crystal panel detection. The diffusion plate structure is arranged on the stage structure, enabling the two to perform lifting operations synchronously. Thus, the detection camera can meet two detection requirements, namely, taking pictures through the diffusion plate and directly taking pictures of the product, while remaining stationary. This changes the traditional detection method in which the camera, the stage assembly, and the diffusion plate assembly are all independently designed and slide along the Z-axis, simplifies the adjustment process during detection, and greatly improves the detection efficiency. The AOI detection device and the detection method of the present invention have a simple overall structure, convenient operation, and high intelligence level. They can not only realize the automatic feeding and discharging of the product to be detected and automatic lighting, but also, through the optimization of the feeding and discharging method, better match the production line for other detections of the product to be detected, having good practical value and application prospects.

Description

Technical Field

[0001] The present invention belongs to the field of liquid crystal panel detection, and in particular relates to an AOI detection device and a detection method. Background Art

[0002] With the rapid development of the display panel industry and the gradual maturity of panel inspection technology, automated inspection machines have gradually replaced manual work to achieve rapid inspection of panels. For example, the Chinese patent "Patent Name: A Display Panel Optical Automatic Inspection Device; Application Number: 202210315411.4" discloses a display panel optical automatic inspection device, which includes: a darkroom inspection box, the front of which is provided with a window for taking in and placing the product to be inspected, and the window is provided with a closed door for closing the window; a product lifting platform, which includes a lifting platform that moves up and down along the Z axis, and a product carrier for fixing the product to be inspected is provided on the lifting platform, and a circuit board for lighting the product to be inspected is provided... It realizes automated high-quality inspection of the product to be inspected, reduces costs, ensures product quality, and improves product inspection efficiency.

[0003] During actual use, it was found that the equipment can only be used as a stand-alone test machine in most cases. It is difficult to connect to the production line and cannot adapt to subsequent rapid inspection operations. During use, the Z-axis distance of the camera needs to be adjusted, which causes the camera and the product to need to be realigned, affecting the inspection efficiency. Summary of the invention

[0004] In response to one or more of the above defects or improvement needs of the prior art, the present invention provides an AOI inspection device and an inspection method, which assembles a diffusion plate on a carrier assembly so that it can be raised and lowered synchronously with the product, and realizes rapid loading and unloading of products through vertical loading and unloading, and connects to the production line for rapid inspection.

[0005] To achieve the above-mentioned object, the present invention provides an AOI inspection device, which includes a lifting assembly, a driving assembly, a stage assembly, a diffusion plate assembly, an inspection assembly and a carrier;

[0006] The driving assembly is in transmission connection with at least one of the lifting assemblies, and is used to drive the lifting assembly to move; the platform assembly is mounted on the lifting assembly, and the carrier plate is used to carry the product to be tested, and is matched with the platform assembly, so that the product to be tested is transported to the platform assembly and is lifted and lowered with the platform assembly;

[0007] The diffusion plate assembly is assembled on the stage assembly, and a space is left between the two for loading and unloading of the product to be tested. The diffusion plate assembly rises and falls synchronously with the stage assembly, and can be flipped relative to the stage assembly;

[0008] The detection direction of the detection assembly is arranged toward the product to be detected on the stage assembly, and is used to detect the product to be detected before and after the diffusion plate assembly is turned over.

[0009] As a further improvement of the present invention, the carrier assembly includes a base and at least one belt line arranged on the base; at least one belt line is arranged in a direction parallel to a loading and unloading direction of the product to be tested, and is used to transport the carrier to the base;

[0010] The base is provided with a positioning structure for positioning the carrier plate on the base;

[0011] The base is also provided with an automatic crimping structure which can be extended and retracted vertically and is used to crimp and fix the carrier plate after it is moved onto the base.

[0012] As a further improvement of the present invention, a POGO module is provided on the carrier board for matching the product to be tested;

[0013] A probe module is also provided on the base, which is used to match with the POGO module. After the carrier is moved onto the base, it is connected with the POGO module through the probe module, so that the product to be tested is illuminated.

[0014] As a further improvement of the present invention, the diffuser plate assembly is connected to the carrier assembly via two first telescopic cylinders for adjusting the vertical spacing between the diffuser plate assembly and the carrier assembly.

[0015] As a further improvement of the present invention, the detection assembly includes a fixing plate, an XY axis linear module, a leveling structure and a detection camera which are assembled and arranged in sequence along the vertical direction;

[0016] A through hole is provided on the leveling structure for the detection camera lens to pass through; and the detection direction of the detection camera is arranged toward the stage assembly.

[0017] As a further improvement of the present invention, the lifting assembly includes two of the first linear modules and a slider mounted on the first linear modules, and the carrier assembly is arranged between the sliders of the two first linear modules;

[0018] The driving assembly includes a cross-steering gear transmission-connected to a first motor and a rotating shaft of the first motor; two output shafts of the cross-steering gear are transmission-connected to the two first linear modules respectively, so as to synchronously drive the two first linear modules to move.

[0019] As a further improvement of the present invention, it also includes an outer cover, which covers the lifting assembly, the stage assembly and the detection assembly inside the outer cover;

[0020] The outer cover is also provided with a window for loading and unloading; and / or

[0021] On the outer cover, a loading port and an unloading port are vertically spaced, and a port shielding structure is provided corresponding to the loading port and the unloading port. The port shielding structure is assembled on the outer cover and is used to control the opening and closing of the loading port and the unloading port.

[0022] As a further improvement of the present invention, the port shielding structure includes a port shielding plate and a second telescopic cylinder;

[0023] At least one of the second telescopic cylinders is assembled on the outer cover, and its telescopic end is connected to the port shielding plate and drives the port shielding plate to move so as to shield the loading port and the unloading port.

[0024] As a further improvement of the present invention, auxiliary guide rollers are provided on the outer periphery of the stage assembly corresponding to the loading and unloading directions of the carrier plate, and the height of the auxiliary guide rollers is flush with the height of the stage assembly, which is used to assist the carrier plate to enter the stage assembly.

[0025] On this basis, the present invention also provides an AOI detection method, which is implemented by using the above AOI detection device, and includes the following steps:

[0026] S1; Move the carrier plate loaded with the product to be tested onto the stage assembly and light up the product to be tested;

[0027] S2: Adjust the stage assembly to the detection height through the lifting assembly so as to detect the product to be tested by using the detection assembly;

[0028] S3: Flip the diffusion plate assembly from the vertical state to the horizontal state and adjust the vertical height of the stage assembly, and directly detect the product to be tested by using the detection assembly;

[0029] S4: Adjust the diffusion plate assembly to the initial state and lift the stage assembly to the loading and unloading position;

[0030] S5: Complete the detection operation of the product to be tested.

[0031] The above improved technical features can be combined with each other as long as they do not conflict with each other.

[0032] Generally speaking, compared with the prior art, the beneficial effects of the above technical solutions conceived by the present invention include:

[0033] (1)The AOI detection device and detection method of the present invention arrange the diffuser plate structure on the stage structure, enabling the two to perform lifting operations synchronously. As a result, the detection camera can meet the two detection requirements of shooting through the diffuser plate and directly shooting the product while remaining stationary. This changes the traditional detection method in which the camera, stage assembly, and diffuser plate assembly are all independently designed and slide along the Z-axis, simplifies the adjustment process during detection, and significantly improves the detection efficiency.

[0034] (2)The AOI detection device and detection method of the present invention further optimize the design of the stage assembly. By using the belt lines on both sides to assist the carrier plate to move onto the base and through the positioning form of matching the laser module with the groove, the carrier plate can quickly reach the designated position on the base, making the process of matching the entire carrier plate with the base more intelligent and eliminating the need for manual operation, thus significantly improving the detection efficiency.

[0035] (3)The AOI detection device and detection method of the present invention match the vertical feeding and discharging method with the requirements of product detection, making the overall detection process smoother, optimizing the detection process, further saving the time required for detection, and at the same time enabling the device to be better connected to the production line for use.

[0036] (4)The AOI detection device and detection method of the present invention have a simple overall structure, convenient operation, and high intelligence level. It can not only realize the automatic feeding and discharging and automatic lighting of the product to be detected, but also, through the optimization of the feeding and discharging method, enable it to better match the production line for other detections of the product to be detected, having good practical value and application prospects. Description of the Drawings

[0037] Figure 1 is the overall structural schematic diagram of the AOI detection device of the present invention;

[0038] Figure 2 is the axonometric view of the stage assembly in the AOI detection device of the present invention;

[0039] Figure 3 is the structural schematic diagram when the stage assembly and the carrier plate in the AOI detection device of the present invention are matched;

[0040] Figure 4 is the overall axonometric structure diagram of the stage assembly and the diffuser plate assembly in the AOI detection device of the present invention;

[0041] Figure 5 is the overall side view structural schematic diagram of the stage assembly and the diffuser plate assembly in the AOI detection device of the present invention;

[0042] Figure 6 is the overall structural schematic diagram of the detection assembly in the AOI detection device of the present invention;

[0043] Figure 7 It is a schematic diagram of the overall structure of the outer cover in the AOI detection device of the present invention;

[0044] Figure 8 It is a schematic diagram of the overall structure of the outer cover from another perspective in the AOI detection device of the present invention;

[0045] Figure 9 It is an overall axonometric view of the material inlet shielding structure in the AOI detection device of the present invention.

[0046] In all the drawings, the same reference numerals represent the same technical features, specifically:

[0047] 100, lifting assembly; 101, outer frame; 102, first linear module; 103, slider;

[0048] 200, drive assembly; 201, first motor; 202, cross shaft;

[0049] 300, carrier platform assembly; 301, base; 302, belt line; 303, carrier plate; 304, limiting structure; 305, positioning structure; 306, POGO module; 307, probe module; 308, automatic crimping structure; 309, auxiliary guide roller;

[0050] 400, diffuser plate assembly; 401, first telescopic cylinder; 402, mounting plate; 402, second motor; 403, rotating shaft; 404, assembly frame;

[0051] 500, detection assembly; 501, fixing plate; 502, XY-axis linear module; 503, leveling structure; 504, detection camera;

[0052] 600, outer cover; 601, window; 602, loading port; 603, unloading port; 604, material inlet shielding plate; 605, second telescopic cylinder. Detailed implementation manners

[0053] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0054] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0055] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0056] In the present invention, unless otherwise clearly defined and limited, the terms "mounted", "connected", "coupled", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral body; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] In the present invention, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0058] Embodiment:

[0059] Please refer to Figures 1 to 9, the AOI detection device in the preferred embodiment of the present invention includes a lifting assembly 100, a driving assembly 200, a stage assembly 300, a diffusion plate assembly 400, a detection assembly 500 and a carrier plate 303; wherein, the lifting assembly 100 is in transmission connection with the driving assembly 200, the stage assembly 300 is assembled on the lifting assembly 100, the diffusion plate assembly 400 is assembled on the stage assembly 300, the carrier plate 303 is used to carry the product to be detected and is matched with the stage assembly 300, and the detection direction of the detection assembly 500 is set facing the stage. So that the driving assembly 200 can drive the lifting assembly 100 to move, thereby driving the stage assembly 300 and the carrier plate 303 assembled on its top to lift synchronously, and through the flip - design of the diffusion plate assembly 400, the detection assembly 500 can realize the rapid detection operation of the product to be detected with and without the diffusion plate while keeping the vertical height unchanged.

[0060] Specifically, the stage assembly 300 in the preferred embodiment of the present invention includes a base 301 and at least one belt line 302 located on the base 301, as well as a positioning structure 305 and an automatic pressing structure 308; the belt line 302 is parallel to the loading and unloading direction of the carrier plate 303, and is used to convey the whole carrier plate 303 to the base 301 after it contacts the front end of the carrier plate 303; the positioning structure 305 is also arranged on the base 301 and is used to position the carrier plate 303 after it is completely conveyed to the base 301, and the automatic pressing structure 308 realizes vertical pressing between the carrier plate 303 and the base 301 after the carrier plate 303 is conveyed to the designated position.

[0061] More specifically, the positioning structure 305 includes a pair of positioning PINs arranged on the base 301, and the layout directions of the two are perpendicular to the loading and unloading direction. Corresponding to the two positioning PINs, two grooves are arranged on the outer periphery of the carrier plate 303. During actual use, when the carrier plate 303 is conveyed to the base 301 along the belt line 302, the positioning PINs are embedded into the grooves. At this time, the positioning PINs simulate the positioning effect of positioning bumps for mechanical positioning; and, the grooves are designed in an arc shape, preferably in a "V" shape; so that even if there is a slight deviation during the conveying process of the carrier plate 303, as long as the positioning PINs can enter the grooves, when the belt line 302 continues to drive, its arc surface (inclined surface) will guide the positioning PINs to approach the center of the grooves, realizing the automatic adjustment of the carrier plate 303 and the base 301. At the same time, the corresponding control of the belt line 302 stops conveying, thereby realizing the positioning of the carrier plate 303 in the X and Y planes.

[0062] It can be understood that in the conventional positioning form, such as in the applicant's prior application, the positioning bumps and the laser and infrared detection modules often adopt independent designs. Taking that case as an example, the operator often sets a laser module at one end, and then sets positioning bumps at designated positions on the base 301 to achieve mechanical limit. Then, the control of the belt line 302 is realized by electrically connecting the laser module to the controller. In the positioning structure 305 in the present application, the two are functionally integrated. Through the positioning PIN and the "V"-shaped groove formed on the carrier plate 303, while realizing mechanical limit, fine adjustment of the carrier plate 303 and control of the belt line 302 are achieved.

[0063] In the above preferred embodiment, the automatic crimping mechanism includes a pressing cylinder and a pressing plate. The pressing plate is connected to the telescopic end of the pressing cylinder, so that the pressing cylinder can drive the pressing plate to press the carrier plate 303 onto the base 301 after the belt line 302 stops working, realizing the limit of the carrier plate 303 in the Z-axis direction. In Figure 2 In Figure 3 the preferred embodiment shown, there are two belt lines 302. The two belt lines 302 are respectively arranged on both sides of the base 301 and are on the same height plane as the base 301. There are also two automatic pressing mechanisms, which are respectively arranged on two opposite side surfaces of the outer periphery of the base 301.

[0064] Furthermore, to realize the lighting operation of the product to be tested before detection, a POGO module 306 is arranged on the carrier plate 303, and a probe module 307 is also arranged on the base 301. The probe module 307 is matched with the POGO module 306. After the carrier plate 303 is pressed and fixed, the cylinder in the probe module 307 can jack up the probe upwards, so that the product to be tested connected to the POGO module 306 is powered on to realize the lighting of the product to be tested. As for how to realize the upward jacking of the probe module 307, it is a conventional technical means for those skilled in the art, such as setting a cylinder at the bottom, which will not be elaborated here.

[0065] It can be understood that in the POGO module 306 and the probe module 307 in the preferred embodiment of the present invention, a split design is adopted. The POGO module 306 is integrally arranged on the carrier plate 303, and the probe module 307 for subsequent power-on is arranged on the fixed base 301, so as to realize the automatic lighting of the product to be tested. It should be noted that this automatic lighting method is a lighting form based on the above-mentioned sliding matching relationship between the carrier plate 303 and the base 301 and the good positioning structure 305 between the carrier plate 303 and the base 301. Through this split lighting form in the present invention, in cooperation with the belt line 302, the positioning structure 305, and the automatic crimping structure 308, the matching of the carrier plate 303 and the base 301 and the subsequent lighting process completely do not require the operation of the operator, realizing the full automation of product docking and lighting.

[0066] In addition, a plurality of limiting structures 304 are provided on the top of the carrier plate 303. The plurality of limiting structures 304 enclose a containing space for containing the product to be tested, so that the product to be tested is restricted into the plurality of limiting structures 304, thereby enabling the product to be tested to be stably placed on the carrier plate 303.

[0067] Furthermore, as Figure 4 and Figure 5 shown, in the diffusion plate assembly 400 in the preferred embodiment of the present invention, it includes a mounting plate 402 which is assembled on the base 301 and has a gap for the loading and unloading of the carrier plate 303 between it and the base 301. A rotating shaft 403 is assembled on one side of the mounting plate 402, and an assembly frame 404 is provided on the rotating shaft 403 for carrying the diffusion plate. At the same time, a second motor 402 is provided corresponding to the rotating shaft 403, and the output shaft of the second motor 402 is connected to the rotating shaft 403 for driving the rotating shaft 403 to move.

[0068] Further preferably, during actual use, there are certain differences in the thicknesses of different products. Therefore, the distance between the diffusion plate and the base 301 should be adjusted accordingly. Thus, the base 301 and the mounting plate 402 are connected by a first telescopic cylinder 401, so that the first telescopic cylinder 401 can drive the entire diffusion plate assembly 400 to move vertically to adjust the distance between the two. Preferably, as Figure 4 and Figure 5 shown, there are two first telescopic cylinders 401, and the two first telescopic cylinders 401 are respectively arranged on the same side of the outer periphery of the base 301 at intervals and are connected to the mounting plate 402. More specifically, in order to accurately detect the distance between the diffusion plate assembly 400 and the top of the base 301, a micrometer and a distance sensor are also provided on the assembly frame 404, and their detection directions are perpendicular to the top of the base 301 for detecting the distance between the assembly frame 404 and the top of the base 301.

[0069] It should be understood that in the preferred embodiment of the present invention, the AOI detection device integrates the diffusion plate assembly 400 and the stage assembly 300 together and realizes the synchronous lifting of the two through the lifting assembly 100. Compared with the applicant's prior application, through this design, the requirements for the Z-axis adjustment of the diffusion plate assembly 400 and the detection assembly 500 are reduced. Only through the synchronous lifting of the two and partial adjustment can the detection operations of the product to be tested with and without the diffusion plate be realized. Moreover, this design also does not require the camera to be realigned due to the change in the position of the diffusion plate, further optimizing the detection process, greatly improving the detection efficiency, and saving the manufacturing cost at the same time.

[0070] Even further, as Figure 1As shown in the figure, the lifting assembly 100 in the preferred embodiment of the present invention includes an outer frame 101 and a first linear module 102 assembled to the outer frame 101; the first linear module 102 is arranged along the Z-axis direction (i.e., vertically arranged). A slider 103 is slidably connected to the first linear module 102, and the slider 103 is connected to the base 301. Preferably, the outer frame 101 is a gantry, and two first linear modules 102 are respectively provided on both sides of the gantry. The stage assembly 300 is arranged between the two first linear modules 102, and the detection assembly 500 is arranged on the top of the gantry, and its irradiation direction is such that the two first linear modules 102 can drive the stage assembly 300 to be adjusted vertically; corresponding to the two first linear modules 102, the drive assembly 200 includes a first motor 201 and a cross shaft 202, and the output end of the first motor 201 is in transmission connection with the input end of the cross shaft 202, such as through gear meshing; the two output ends of the cross shaft 202 are respectively in transmission connection with the two first linear modules 102 for driving the first linear modules 102 to move. Preferably, the first linear module 102 adopts the structural form of a servo motor and a lead screw.

[0071] It should be noted that in the applicant's prior application, a set of drive systems are respectively and independently provided for the two first linear modules 102 to drive the two first linear modules 102 to rotate. However, in the above preferred embodiment of the present invention, through the first motor 201 and the cross steering shaft, the synchronous rotation of the two first linear modules 102 is realized to ensure the above-mentioned stability and synchronism of the stage assembly 300.

[0072] Furthermore, in the present invention, since the diffusion plate assembly 400 and the stage assembly 300 can be lifted synchronously. There is no need for the detection assembly 500 to be adjusted on the Z-axis. Therefore, the detection assembly 500 can be directly fixed to the gantry, such as Figure 1 as shown in the figure. Further specifically, the detection assembly 500 includes a fixing plate 501, an XY-axis linear module 502, a leveling structure 503 and a detection camera 504 which are sequentially assembled and arranged vertically. A through hole for the lens of the detection camera 504 to pass through is provided on the leveling structure 503, and the detection direction of the detection camera 504 is set towards the center of the base 301.

[0073] Furthermore, as shown in Figures 7 to 9 the figure, the AOI detection device in the preferred embodiment of the present invention further includes an outer cover 600 which covers the outside of the gantry, so that the entire detection environment can be in a dark room environment. At the same time, a window 601 is formed on any one side of the outer periphery of the outer cover 600 for loading and unloading products. During actual use, if the device is used as a single machine, the operator can directly perform loading and unloading operations through the provided window 601.

[0074] If the window 601 is directly connected to the production line, it is very easy to cause light leakage in the internal environment, affecting the accuracy of the detection results. Moreover, it is also necessary to manually assemble the carrier plate 303 onto the stage assembly 300 and then perform operations, which is not only cumbersome but also difficult to directly connect to the production line. Therefore, a separate loading port 602 and unloading port 603 are provided on the outer periphery of the outer cover 600 of the present application, and a port shielding structure is provided corresponding to the loading port 602 and the unloading port 603, so that the ports are opened during loading and unloading and closed when not in use for detection or other purposes.

[0075] In principle, only one loading port 602 and one unloading port 603 can be provided. However, considering the equipment time TT, if only one opening is provided for loading and unloading, the loading and unloading operations will affect each other, affecting the detection efficiency. Therefore, in the above preferred embodiment, it is preferred that the loading port 602 and the unloading port 603 are arranged at intervals in the vertical direction, and the heights of the loading port 602 and the unloading port 603 respectively correspond to the height positions of the product during the detection with a diffusion plate and the detection without a diffusion plate.

[0076] More specifically, the port shielding structure includes a port shielding plate 604 and a second telescopic cylinder 605 provided corresponding to the loading port 602 and the unloading port 603. The port shielding plate 604 can slide along the outer cover 600, and the second telescopic cylinder 605 is connected to the port shielding plate 604 to drive the port shielding plate 604 to expand and contract, so as to realize the shielding and opening operations of the loading port 602 and the unloading port 603. More details are as follows Figure 9 As shown in, the port shielding plate 604 includes two shielding units and a connecting unit connecting the two shielding units. The area of the front view projection plane of the shielding unit is larger than the projection plane of the feeding port 602 and the unloading port 603. At the same time, there are two connecting units, and the two connecting units are respectively connected to both ends of the two shielding units. And there are also two second telescopic cylinders 605, which are respectively connected to the two connecting units, so as to drive the two shielding units to move vertically along the vertical direction through the two vertically arranged connecting units, realizing the shielding of the loading port 602 and the unloading port 603.

[0077] Furthermore, considering that during the detection of the product, the diffusion plate needs to be flipped, and the product to be detected needs to be detected at different height positions. Therefore, to prevent the diffusion plate from colliding with the detection camera 504 during the flipping process, it is preferred that the diffusion plate is parallel to the stage assembly 300 when approaching the detection camera 504. At this time, the detection camera 504 detects the product to be detected through the diffusion plate; then control the stage assembly 300 to descend, and control the second motor 402 to rotate to flip the diffusion plate to a vertical state. After descending to the specified height, then directly photograph the product to be detected on the stage assembly 300 through the detection camera 504.

[0078] In addition, considering that the carrier plate 303 carries the product when entering from the outside, since there is a certain gap between the outer cover 600 and the stage, on one side of the stage structure 300 close to the loading port 602 and the unloading port 603, auxiliary guiding rollers 309 are provided, and the height of the auxiliary guiding rollers 309 is flush with the height of the base 301, for the gap between the base 301 and the loading port 602 and the unloading port 603 of the outer cover 600.

[0079] On this basis, the present invention further provides an AOI detection method, which is implemented by using the detection device in the above preferred embodiment, and includes the following steps;

[0080] S1; Move the carrier plate 303 loaded with the product to be tested onto the stage assembly 300 and light up the product to be tested.

[0081] Specifically, first, the product to be tested is placed in a plurality of limiting structures on the carrier plate 303, and then the connection line of the product to be tested is connected to the POGO module 306 to realize the assembly of the product to be tested on the carrier plate 303. Then the operator can convey the product to be tested and the carrier plate 303 from the loading port 602 into the equipment. At this time, the carrier plate 303 first contacts the auxiliary guiding roller 309, and then contacts the belt line 302 on the base 301. The belt line 302 starts to work, drives the carrier plate 303 onto the base 301 until the groove at the front end of the carrier plate 303 abuts against the positioning structure 305. At the same time, since the positioning structure 305 (positioning pin) is blocked and cannot receive normally, the blocking signal is sent to the controller, and the controller correspondingly controls the belt line 302 to stop working. At this time, the carrier plate 303 is completely moved onto the base 301. Then the automatic crimping structure 308 crimps the carrier plate 303 to the base 301 to realize the fixation between the two.

[0082] S2: Adjust the stage assembly 300 to the detection height through the lifting assembly 100, so as to use the detection assembly 500 to detect the product to be tested.

[0083] As Figure 1 shown in, at this time, the diffuser plate assembly 400 is arranged in parallel with the stage assembly 300, and the detection assembly 500 detects the product to be tested through the diffuser plate.

[0084] S3: Flip the diffuser plate assembly 400 from the vertical state to the horizontal state, and adjust the vertical height of the stage assembly 300, and use the detection assembly 500 to directly detect the product to be tested.

[0085] In this process, first control the stage assembly 400 to descend, and then control the diffuser plate assembly 400 to start flipping until the diffuser plate assembly 400 is in the vertical state. After descending to the specified position, use the detection camera 504 to directly take pictures of the product to be tested without the diffuser plate.

[0086] Meanwhile, after the shooting is completed, keep the position of the stage assembly 300 unchanged, and output the product to be tested from the blanking port 603 to the outside in the reverse direction of the belt line 302.

[0087] Complete the detection operation of a single product to be tested.

[0088] S4: Finally, adjust the diffusion plate assembly 400 to its initial state, and lift the stage assembly 300 to the loading and unloading position.

[0089] S5: Complete the detection operation of the product to be tested.

[0090] (1) In the AOI detection device of the present invention, the diffusion plate structure is arranged on the stage structure, enabling the two to perform lifting operations synchronously. Thus, the detection camera can meet two detection requirements, namely, taking pictures through the diffusion plate while remaining stationary and directly taking pictures of the product, changing the traditional detection method in which the camera, the stage assembly, and the diffusion plate assembly are all independently designed and slide along the Z-axis, simplifying the adjustment process during detection and significantly improving the detection efficiency.

[0091] (2) In the AOI detection device of the present invention, through further optimized design of the stage assembly, the belt lines on both sides are used to assist the carrier plate to move to the base, and through the positioning form of matching the laser module with the groove, the carrier plate can quickly reach the specified position on the base, making the process of matching the entire carrier plate with the base more intelligent, without manual operation, and significantly improving the detection efficiency.

[0092] (3) In the AOI detection device of the present invention, the vertical feeding and discharging method is matched with the requirements of product detection, making the overall detection process smoother, optimizing the detection process, further saving the time required for detection, and at the same time, enabling the device to be better connected to the production line for use.

[0093] (4) The AOI detection device of the present invention has a simple overall structure, convenient operation, and high intelligence level. It can not only realize the automatic feeding and discharging and automatic lighting of the product to be tested, but also, through the optimization of the feeding and discharging method, better match the production line for other detections of the product to be tested, having good practical value and application prospects.

[0094] Those skilled in the art can easily understand that the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An AOI detection device, which includes a lifting component (100), a stage component (300), a diffuser plate component (400) and a detection component (500); the stage component (300) is assembled on the lifting component (100), and the stage component (300) is used to carry the product to be tested, Characterized in that, The diffuser plate component (400) is movably assembled on the stage component (300), and there is a space for loading and unloading the product to be tested between the two; the diffuser plate component (400) is lifted synchronously with the stage component (300) and can be flipped relative to the stage component (300); The diffuser plate component (400) includes a mounting plate (402) assembled on the stage component (300), and a rotating shaft (403) is assembled on one side of the mounting plate (402); an assembly frame (404) for carrying the diffuser plate is arranged on the rotating shaft (403); a motor (403) is provided corresponding to the rotating shaft (403), and the output shaft of the motor (402) is connected to the rotating shaft (403); The detection direction of the detection component (500) is set towards the product to be tested on the stage component (300), and is used to detect the product to be tested before and after the diffuser plate component (400) is flipped.

2. The AOI detection device according to claim 1, Characterized in that, The stage component (300) includes a base (301) and a stage plate (303) for carrying the product to be tested; the base (301) can be movably assembled with the stage plate (303); A POGO module (306) is arranged on the stage plate (303), and a probe module (307) is also arranged on the base (301), which is used to match with the POGO module (306). After the stage plate (303) moves onto the base (301), the probe module (307) is communicated with the POGO module (306) to realize lighting of the product to be tested.

3. The AOI detection device according to claim 2, Characterized in that, At least one belt line (302) is arranged on the base (301); its layout direction is parallel to the loading and unloading direction of the product to be tested, and is used to convey the stage plate (303) onto the base (301); and A positioning structure (305) is arranged on the base (301) for positioning the position of the stage plate (303) on the X and Y planes of the base (301); An automatic crimping structure (308) is also arranged on the base (301), which can be telescoped vertically and is used to crimp and fix the stage plate (303) after it moves onto the base (301).

4. The AOI detection device according to claim 2 or 3, Characterized in that, It further includes an outer cover (600), which covers the lifting component (100), the stage component (300) and the detection component (500) inside it; The outer cover (600) is also provided with a window (601) for loading and unloading; and / or A loading port (602) and a loading port (603) are vertically spaced apart on the upper edge of the outer cover (600).

5. The AOI inspection device according to claim 4, It is characterized in that A material port shielding structure is provided corresponding to the material loading port (602) and the material unloading port (603), which is assembled on the outer cover (600) and is used to control the opening and closing of the material loading port (602) and the material unloading port (603).

6. The AOI inspection device according to claim 4, It is characterized in that An auxiliary guide roller (309) is provided on the outer periphery of the carrier assembly (300) and in the loading and unloading direction corresponding to the carrier plate (303), and its height is flush with the height of the carrier assembly (300) and is used to assist the product to be tested to enter the carrier assembly (300).

7. The AOI inspection device according to any one of claims 1 to 3, 5 and 6, It is characterized in that The diffusion plate assembly (400) is connected to the platform assembly (300) via at least one first telescopic cylinder (401) and is used to adjust the vertical spacing between the diffusion plate assembly (400) and the platform assembly (300).

8. The AOI inspection device according to claim 1, It is characterized in that The detection assembly (500) comprises a fixing plate (501), an XY axis linear module (502), a leveling structure (503), and a detection camera (504) which are assembled in sequence along the vertical direction; A through hole is provided on the leveling structure (503) through which a lens of the detection camera (504) can pass; and the detection direction of the detection camera (504) is arranged toward the stage assembly (300).

9. The AOI inspection device according to claim 1, It is characterized in that Also included is a driving assembly (100); the driving assembly comprises a first motor (201) and a cross-shaped steering gear drivingly connected to an output end of the first motor (201); The lifting assembly (100) comprises two first linear modules (102) and a slider (103) mounted on the first linear modules (102), and the carrier assembly (300) is arranged between the sliders (103) of the two first linear modules (102); The two output shafts of the cross-shaped steering device are respectively connected in transmission with the two first linear modules (102) for synchronously driving the two first linear modules (102) to move.

10. An AOI detection method, It is characterized in that It is implemented using the AOI inspection device described in any one of claims 1 to 9, and comprises the following steps: S1: moving the product to be tested onto the carrier assembly (300) and lighting the product to be tested; S2: adjusting the platform assembly (300) to a detection height by means of the lifting assembly (100), so that the product to be detected can be detected by means of the detection assembly (500); S3: flipping the diffusion plate assembly (400) from a vertical state to a horizontal state, adjusting the vertical height of the carrier assembly (300), and directly inspecting the product to be inspected using the inspection assembly (500); S4: Adjust the diffusion plate assembly (400) to its initial state and raise or lower the carrier assembly (300) to the loading and unloading position; S5: Complete the inspection operation of the product to be tested.

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