Lithium electrode column appearance defect detection module and lithium electrode column appearance defect detection equipment

Abstract

The lithium electrode column appearance defect detection module is used for conducting visual detection on a lithium electrode column and comprises an upper-layer rotating disc and a lower-layer rotating disc, a turn-over assembly is arranged between the upper-layer rotating disc and the lower-layer rotating disc and comprises a first guiding piece, a second guiding piece and a turn-over sliding way, and the turn-over sliding way is arranged between the upper-layer rotating disc and the lower-layer rotating disc; the lithium electrode column slides down to the lower-layer turntable along the turn-over slide way and is turned over; detection assemblies are respectively arranged above the upper-layer rotary table and the lower-layer rotary table, each detection assembly comprises a top surface detection mechanism, a bottom surface detection mechanism and a side surface detection mechanism, and the top surface detection mechanisms and the bottom surface detection mechanisms are used for detecting the lithium electrode columns from above; the detection module further comprises a data processing center, and the data processing center is connected with the detection assembly. In addition, the utility model further discloses lithium electrode column appearance defect detection equipment applying the detection module, automatic detection can be carried out, manual visual detection is replaced, and the lithium electrode column appearance defect detection equipment has the advantages of being high in detection efficiency and high in precision.

Description

Technical Field

[0001] This application relates to the technical field of lithium electrode column detection through CCD vision, and particularly to an appearance defect detection module for lithium electrode columns and an appearance defect detection device for lithium electrode columns applying the appearance defect detection module for lithium electrode columns. Background Art

[0002] Prior to this, in the production workshop, the defect detection of lithium electrode columns was all carried out manually by visual inspection. Due to various defects in lithium electrode columns, it is very difficult for manual inspection to be quantified. Different inspectors will result in different judgment results, leading to unstable inspection quality. At the same time, such an inspection method has extremely low efficiency. Visual inspection will also cause a large number of misjudgments and missed inspections due to factors such as manual fatigue, resulting in a large number of complaints from end customers. Long-term operation is also a great physical burden on operators. Summary of the Utility Model

[0003] The technical problem to be solved by this application is to provide an appearance defect detection module for lithium electrode columns, which can replace the manual visual inspection method and automatically and accurately perform multi-directional appearance inspections on lithium electrode columns.

[0004] The technical solution adopted by this application to solve its technical problems is: An appearance defect detection module for lithium electrode columns, used for visually inspecting lithium electrode columns, includes:

[0005] An upper turntable for conveying the lithium electrode columns;

[0006] A lower turntable for conveying the lithium electrode columns. The upper turntable is located above the lower turntable and the upper turntable and the lower turntable are concentrically arranged. The area of the lower turntable is larger than the area of the upper turntable. The lower turntable includes a first area covered by the projection plane of the upper turntable and a second area exposed outside the projection plane of the upper turntable;

[0007] A turning-over assembly. The turning-over assembly includes a first guiding member, a second guiding member, and an arc-shaped turning-over slideway. The turning-over slideway is arranged between the upper turntable and the lower turntable. The first guiding member is arranged on the upper turntable to guide the lithium electrode columns on the upper turntable to the turning-over slideway. The lithium electrode columns slide down along the arc-shaped turning-over slideway to the lower turntable and complete turning over. The second guiding member is arranged on the lower turntable to guide the lithium electrode columns sliding down from the turning-over slideway to the second area;

[0008] The detection component includes a top surface detection mechanism, a bottom surface detection mechanism, and a side surface detection mechanism; the top surface detection mechanism inspects the lithium electrode columns on the upper turntable from above, and the bottom surface detection mechanism inspects the lithium electrode columns on the second area from above; or the bottom surface detection mechanism inspects the lithium electrode columns on the upper turntable from above, and the top surface detection mechanism inspects the lithium electrode columns on the second area from above.

[0009] The data processing center is connected to the detection component, and the detection component feeds back the detected data to the data processing center.

[0010] In some embodiments of the present application, at least two top surface detection mechanisms are provided, and the top surface detection mechanism includes a positioning hole defect detection mechanism and a surface defect detection mechanism.

[0011] In some embodiments of the present application, at least two bottom surface detection mechanisms are provided, and the bottom surface detection mechanism includes a bottom surface 3D detection mechanism and a bottom surface oxidation appearance defect detection mechanism.

[0012] In some embodiments of the present application, the lower turntable rotates in the same direction as the upper turntable.

[0013] In some embodiments of the present application, the lithium electrode column appearance defect detection module further includes a screening component, the screening component includes a screening execution mechanism and a collection box, the screening execution mechanism is connected to the data processing center, and the screening execution mechanism sends the defective lithium electrode columns into the collection box according to the instructions of the data processing center.

[0014] In some embodiments of the present application, multiple screening components are provided.

[0015] In some embodiments of the present application, the lithium electrode column appearance defect detection module further includes a blanking component, the blanking component includes a blanking mechanism and a blanking belt line.

[0016] In some embodiments of the present application, the blanking belt line includes a first blanking belt line and a second blanking belt line, monitoring devices are respectively arranged on the first blanking belt line and the second blanking belt line, and the first blanking belt line, the second blanking belt line, and the monitoring devices are respectively connected to the data processing center;

[0017] When the monitoring device detects that the first blanking belt line is full, the blanking mechanism sends the lithium electrode columns to the second blanking belt line;

[0018] When the monitoring device detects that the second blanking belt line is full, the blanking mechanism sends the lithium electrode columns to the first blanking belt line.

[0019] In addition, the present application also provides a lithium electrode post appearance defect detection device, including the above-mentioned lithium electrode post appearance defect detection module.

[0020] In some embodiments of the present application, the detection device further includes a pole post loading module and a pole post unloading module. The pole post loading module is docked with the upper turntable, and the pole post unloading module is docked with the unloading component in the lithium electrode post appearance defect detection module.

[0021] By implementing the present application, the following beneficial effects are achieved: The lithium electrode post appearance defect detection module of the present application is provided with a turning component between the upper turntable and the lower turntable. The front and bottom surfaces of the lithium electrode post are turned over by the turning component without pausing, with high efficiency. The lithium electrode post completes the detection of the front and back surfaces and the side surfaces of the product on the upper turntable and the lower turntable respectively. When detecting, the cameras are installed above or on the side of the turntable, there are no obstacles in the middle, and it is not necessary to detect through the turntable, thus avoiding misjudgment caused by poor transparency of the turntable itself when the camera detects through the turntable. The lithium electrode post appearance defect detection device of the present application applies the above-mentioned detection module for automatic detection, which can replace manual visual inspection and has the advantages of high detection efficiency and high accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present application will be further described below in conjunction with the drawings and embodiments. In the drawings:

[0023] Figure 1 is a schematic structural diagram of the lithium electrode post appearance defect detection module provided by an embodiment of the present application;

[0024] Figure 2 is Figure 1 a schematic structural diagram of the screening component and the unloading component on the lithium electrode post appearance defect detection module in

[0025] Figure 3 is a schematic structural diagram of the lithium electrode post appearance defect detection device provided by an embodiment of the present application;

[0026] Figure 4 is Figure 3 a schematic structural diagram of the pole post loading module in

[0027] Figure 5 is Figure 3 a schematic structural diagram of the pole post unloading module in

[0028] Explanation of the reference numerals in the drawings:

[0029] Lithium electrode post appearance defect detection module 100, upper turntable 10, lower turntable 20, turning-over assembly 30, turning-over slideway 31, first guiding member 32, second guiding member 33, bottom 3D detection mechanism 41, bottom oxidation appearance defect detection mechanism 42, positioning hole defect detection mechanism 43, surface defect detection mechanism 44, side detection mechanism 45, lithium electrode post 50, screening component 60, screening actuator 61, collection box 62, blanking component 70, first blanking belt line 71, second blanking belt line 72;

[0030] Pole post feeding module 200, feeding belt line 210, lifting mechanism 220, first transfer mechanism 230, second transfer mechanism 240, feeding buffer mechanism 250, feeding component 260, feeding belt line 270;

[0031] Pole post blanking module 300, third transfer mechanism 310, blanking buffer mechanism 320, fourth transfer mechanism 330, disk placing mechanism 340, descending mechanism 350, discharging belt line 360. Detailed implementation manners

[0032] For a clearer understanding of the technical features, objectives, and effects of this application, the specific implementation manners of this application will now be described in detail with reference to the accompanying drawings.

[0033] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments may be combined with each other.

[0034] In the description of the utility model, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing this application 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, and thus should not be construed as a limitation to this application. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of this application, unless otherwise specified, the meaning of "plural" is two or more.

[0035] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or a chemical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0036] See Figures 1 to 5 , the present application discloses a visual defect detection module for the appearance of lithium electrode columns, and a detection device applying the visual defect detection module for the appearance of lithium electrode columns.

[0037] As Figure 1 , Figure 2 As shown in FIGS.

[0038] As Figure 1As shown, the lithium electrode post appearance defect detection module 100 of the present application further includes a detection component, and the detection component includes a top surface detection mechanism, a bottom surface detection mechanism, and a side surface detection mechanism 45. Among them, in this embodiment, the bottom surface detection mechanism inspects the lithium electrode posts 50 on the upper turntable 10 from above. At least two bottom surface detection mechanisms are provided. The bottom surface detection mechanism includes a bottom surface 3D detection mechanism 41 and a bottom surface oxidation appearance defect detection mechanism 42. The 3D detection mechanism 41 is used to detect the deformation amount of the bottom surface of the lithium electrode post 50 and whether the injection molding nozzle is higher than the plane. The bottom surface oxidation appearance defect detection mechanism 42 mainly detects whether there are appearance defects such as dirt or oxidation on the bottom surface. The top surface detection mechanism inspects the lithium electrode posts 50 in the second area from above. At least two top surface detection mechanisms are provided. The top surface detection mechanism includes a positioning hole defect detection mechanism 43 and a surface defect detection mechanism 44. The positioning hole defect detection mechanism 43 mainly detects whether there are problems such as deformation, scratches, and metal wires in the positioning holes on the top surface of the lithium electrode post 50. The surface defect detection mechanism 44 mainly detects whether there are problems such as dirt, scratches, pits, plastic overflow inside or outside the plastic on the metal and plastic surfaces on the top surface of the lithium electrode post 50. The side surface detection mechanism 45 inspects the lithium electrode posts 50 in the second area from the side. The side surface detection mechanism 45 has four detection probes, which detect the side surface of the lithium electrode post 50 from different angles, mainly detecting whether there are defects such as plastic leaking metal, plastic cracking, dirt, scratches or scuffs. Since both the top surface detection mechanism and the bottom surface detection mechanism in the present application detect the lithium electrode post 50 from above, the detection camera is above the turntable during detection, there are no obstacles in the middle, and it is not necessary to detect through the turntable, thus avoiding misjudgment caused by poor transparency of the turntable itself when the camera detects through the turntable and improving the detection accuracy. In addition, the lithium electrode post appearance defect detection module 100 of the present application further includes a data processing center. The data processing center is electrically connected to the detection component. The detection component feeds back the detected data to the data processing center, and the data processing center analyzes and processes it to indicate the next operation.

[0039] As Figure 2As shown, in some embodiments, the lithium electrode post appearance defect detection module 100 further includes a screening component 60. The screening component 60 includes a screening actuator 61 and a collection box 62. The screening actuator 61 is connected to the data processing center, and the data processing center controls the operation of the screening actuator 61. When the detection component feeds back to the data processing center that a defective product has been detected, the data processing center issues an instruction to trigger the operation of the screening actuator 61. The screening actuator 61 pushes the defective lithium electrode posts 50 (defective products) into the collection box 62, removing the defective products from the production line, thereby greatly improving the yield rate of the product. In this embodiment, multiple groups of screening components 60 are provided. The multiple groups of screening components 60 are respectively connected to the data processing center, and the data processing center can trigger the corresponding screening component 60 to operate according to different product defects, and classify and recycle the defective products according to different product defects.

[0040] As Figure 2 shown, in some embodiments, the lithium electrode post appearance defect detection module 100 further includes a blanking component 70. The blanking component 70 includes a blanking mechanism and a blanking belt line. The blanking mechanism can send the lithium electrode posts 50 to the blanking belt line in any form such as blowing or pushing. The blanking belt line is used to send the lithium electrode posts 50 to the next operation step. Further, in this embodiment, the blanking belt line includes a first blanking belt line 71 and a second blanking belt line 72. Monitoring devices are respectively arranged on the first blanking belt line 71 and the second blanking belt line 72. The first blanking belt line 71, the second blanking belt line 72, and the monitoring devices are respectively connected to the data processing center. When the monitoring device detects that the first blanking belt line 71 is full, the blanking mechanism sends the lithium electrode posts 50 to the second blanking belt line 72; when the monitoring device detects that the second blanking belt line 72 is full, the blanking mechanism sends the lithium electrode posts 50 to the first blanking belt line 71. The first blanking belt line 71 and the second blanking belt line 72 are cyclically switched to complete the continuous blanking of the product, improving the efficiency.

[0041] As Figure 3 shown, some embodiments of the present application further provide a lithium electrode post appearance defect detection device, including the above-mentioned lithium electrode post appearance defect detection module 100, and a pole post loading module 200 and a pole post unloading module 300 that are docked with the lithium electrode post appearance defect detection module 100.

[0042] Specifically, as Figure 4As shown in the figure, the pole feeding module 200 includes a feeding belt line 210, a jacking mechanism 220, a first transfer mechanism 230, a second transfer mechanism 240, a feeding buffer mechanism 250, a feeding component 260, and a feeding belt line 270. In this embodiment, the feeding belt line 210 consists of four ribbed flat belts arranged on a structural bracket and is driven by a stepping motor. Workers place the lithium electrode columns 50 filled in trays on the feeding belt line 210, and the stepping motor drives the feeding belt line 210 to operate, so that the trays full of lithium electrode columns 50 automatically move to the jacking mechanism 220. The jacking mechanism 220 is located in front of the feeding belt line 210. The jacking mechanism 220 includes a screw sliding assembly, and the servo motor drives the screw sliding assembly to perform vertical lifting to drive the trays full of lithium electrode columns 50 to lift. After the trays full of lithium electrode columns 50 rise in place and wait to be picked up, each time a tray of lithium electrode columns 50 is taken away, the screw sliding assembly automatically rises by the distance of one layer to wait for the next pick-up. After all the trays full of lithium electrode columns 50 are taken away, the jacking mechanism 220 descends to the initial position to wait for the next feeding. The first transfer mechanism 230 consists of a motion module and a suction nozzle, and is used to suck and take away the empty trays at the jacking mechanism 220 and place them at the outside collection area for collection. The second transfer mechanism 240 consists of an XZ-axis motion module and a suction nozzle, and is used to suck and transport the lithium electrode columns 50 (excluding the trays) at the jacking mechanism 220 to the feeding buffer mechanism 250. Both the first transfer mechanism 230 and the second transfer mechanism 240 can operate in a reciprocating cycle. The feeding buffer mechanism 250 includes a buffer belt line. The second transfer mechanism 240 sucks and transports a whole tray of lithium electrode columns 50 (excluding the trays) to the buffer belt line at one time, and the buffer belt line runs step by step. The feeding component 260 is arranged near the feeding buffer mechanism 250. The feeding component 260 picks up a row of lithium electrode columns 50 from the buffer belt line and places them on the feeding belt line 270 at one time, and the feeding belt line 270 transports the lithium electrode columns 50 to the upper turntable 10 to complete the feeding operation. Further, the feeding belt line 270 consists of an upper belt line, a lower belt line, and an arc channel. The lithium electrode columns 50 are placed face up on the upper belt line by the feeding component 260, and the stepping motor drives the upper belt line to operate. After passing through the arc channel, the lithium electrode columns 50 are turned over, and the bottom faces up and falls on the lower belt line. The lower belt line transports the lithium electrode columns 50 to the upper turntable 10.

[0043] As Figure 5As shown in the figure, the pole blanking module 300 includes a third transfer mechanism 310, a blanking buffer mechanism 320, a fourth transfer mechanism 330, a disk placing mechanism 340, a lowering mechanism 350, and a discharging belt line 360. In this embodiment, the third transfer mechanism 310 is composed of an XZ-axis movement module, a cylinder, and a suction nozzle. The third transfer mechanism 310 sucks a row of lithium electrode columns 50 from the discharging belt line each time, and after completing pitch variation, places them on the blanking buffer mechanism 320. The pitch variation is equal to the row pitch when the products are loaded onto the disk. The blanking buffer mechanism 320 includes a blanking buffer belt line, which is driven by a stepping motor. Each time the third transfer mechanism 310 places a row of lithium electrode columns 50, the stepping motor drives the blanking buffer belt line to move a fixed distance and waits for the next feeding. The stepping fixed distance is equal to the column pitch when the products are loaded onto the disk. When the number of products in a column on the blanking buffer belt line is equal to the number of columns when the products are loaded onto the disk, the blanking buffer belt line steps to below the fourth transfer mechanism 330 and waits to be picked up. The fourth transfer mechanism 330 is composed of an XZ-axis movement module and multiple suction nozzles. The fourth transfer mechanism 330 transports the lithium electrode columns 50 on the blanking buffer mechanism 320 onto an empty disk at one time, and each time it transports enough to fill one empty disk. The disk placing mechanism 340 is composed of an XZ-axis movement module and a suction nozzle. The disk placing mechanism 340 is used to transport the empty disk to the lowering mechanism 350. After the disk placing mechanism 340 transports the empty disk to the lowering mechanism 350, the fourth transfer mechanism 330 completes the loading of the lithium electrode columns 50 at the lowering mechanism 350. Each time the fourth transfer mechanism 330 fills one disk with lithium electrode columns 50, the lowering mechanism 350 automatically descends a layer of distance, and the disk placing mechanism 340 and the fourth transfer mechanism 330 sequentially perform the next feeding. After filling a predetermined number of full disks with lithium electrode columns 50, the lowering mechanism 350 descends to a position lower than the discharging belt line 360, and the discharging belt line 360 transports all the full disks with lithium electrode columns 50 out. The lowering mechanism 350 rises to the initial position and waits for the next feeding. After the discharging belt line 360 transports a certain number of full disks with lithium electrode columns 50 out, an alarm prompts the operator to pick up the materials.

[0044] In the lithium electrode column appearance defect detection module 100 of the present application, a turning-over assembly 30 is arranged between the upper turntable 10 and the lower turntable 20. The front and bottom surfaces of the lithium electrode column 50 are turned over through the turning-over assembly 30. The turning-over process requires no pause and has high efficiency. The lithium electrode column 50 respectively completes the detection of the front and back surfaces and the side surfaces of the product on the upper turntable 10 and the lower turntable 20. When detecting, the cameras are installed above or on the side of the turntable, there are no obstacles in the middle, and it is not necessary to detect through the turntable, thus avoiding misjudgment caused by poor transparency of the turntable itself when the camera detects through the turntable. The lithium electrode column appearance defect detection equipment of the present application uses the above detection module for automatic detection, and has the advantages of high detection efficiency and high precision.

[0045] It can be understood that the above embodiments only represent the preferred embodiments of the present application, and the description thereof is relatively specific and detailed. However, it should not be construed as a limitation on the scope of the patent of the present application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, the above embodiments or technical features can be freely combined, and several deformations and improvements can also be made, all of which fall within the protection scope of the present application, that is, the embodiments described in "in some embodiments" can be freely combined with any of the above and below embodiments. Therefore, all equivalent transformations and modifications made to the scope of the claims of the present application shall fall within the scope covered by the claims of the present application.

Claims

1. A visual inspection module for detecting appearance defects of a lithium electrode post, which is used for visually inspecting the lithium electrode post (50), and is characterized in that, Including: An upper turntable (10) for conveying the lithium electrode column (50); A lower turntable (20) for conveying the lithium electrode column (50), the upper turntable (10) is located above the lower turntable (20) and the upper turntable (10) and the lower turntable (20) are concentrically arranged. The area of the lower turntable (20) is larger than the area of the upper turntable (10). The lower turntable (20) includes a first area covered by the projection plane of the upper turntable (10), and a second area exposed outside the projection plane of the upper turntable (10); A turning-over assembly (30), the turning-over assembly (30) includes a first guiding member (32), a second guiding member (33) and an arc-shaped turning-over slideway (31). The turning-over slideway (31) is arranged between the upper turntable (10) and the lower turntable (20). The first guiding member (32) is arranged on the upper turntable (10) to guide the lithium electrode column (50) on the upper turntable (10) to the turning-over slideway (31). The lithium electrode column (50) slides down along the arc-shaped turning-over slideway (31) to the lower turntable (20) and completes turning over. The second guiding member (33) is arranged on the lower turntable (20) to guide the lithium electrode column (50) sliding down from the turning-over slideway (31) to the second area; A detection assembly, including a top surface detection mechanism, a bottom surface detection mechanism and a side surface detection mechanism (45); the top surface detection mechanism inspects the lithium electrode column on the upper turntable from above, and the bottom surface detection mechanism inspects the lithium electrode column on the second area from above; or the bottom surface detection mechanism inspects the lithium electrode column on the upper turntable from above, and the top surface detection mechanism inspects the lithium electrode column on the second area from above; A data processing center, connected to the detection assembly, and the detection assembly feeds back the detected data to the data processing center.

2. The appearance defect detection module for the lithium electrode column according to claim 1, wherein At least two top surface detection mechanisms are provided, and the top surface detection mechanism includes a positioning hole defect detection mechanism (43) and a surface defect detection mechanism (44).

3. The appearance defect detection module for the lithium electrode column according to claim 1, characterized in that, At least two bottom surface detection mechanisms are provided, and the bottom surface detection mechanism includes a bottom surface 3D detection mechanism (41) and a bottom surface oxidation appearance defect detection mechanism (42).

4. The appearance defect detection module for the lithium electrode post according to claim 1, characterized in that The lower turntable (20) rotates in the same direction as the upper turntable (10).

5. The appearance defect detection module of the lithium electrode column according to claim 1, characterized in that, The lithium electrode column appearance defect detection module further includes a screening component (60), the screening component (60) includes a screening execution mechanism (61) and a collection box (62). The screening execution mechanism (61) is connected to the data processing center, and the screening execution mechanism (61) sends the defective lithium electrode column (50) into the collection box (62) according to the instruction of the data processing center.

6. The appearance defect detection module for the lithium electrode column according to claim 5, wherein, A plurality of screening components (60) are provided.

7. The appearance defect detection module of the lithium electrode column according to claim 1, characterized in that The lithium electrode column appearance defect detection module further includes a blanking component (70), and the blanking component includes a blanking mechanism and a blanking belt line.

8. The appearance defect detection module for the lithium electrode column according to claim 7, characterized in that, The blanking belt line includes a first blanking belt line (71) and a second blanking belt line (72). Monitoring devices are respectively arranged on the first blanking belt line (71) and the second blanking belt line (72). The first blanking belt line (71), the second blanking belt line (72) and the monitoring devices are respectively connected to the data processing center; When the monitoring device detects that the first blanking belt line (71) is full, the blanking mechanism sends the lithium electrode post (50) onto the second blanking belt line (72); When the monitoring device detects that the second blanking belt line (72) is full, the blanking mechanism sends the lithium electrode post (50) onto the first blanking belt line (71).

9. Lithium electrode post appearance defect detection equipment, characterized in that, It includes the lithium electrode post appearance defect detection module (100) according to any one of claims 1 to 8.

10. The appearance defect detection device for the lithium electrode column according to claim 9, characterized in that, The detection device further includes a pole post feeding module (200) and a pole post blanking module (300). The pole post feeding module (200) is docked with the upper turntable (10), and the pole post blanking module (300) is docked with the blanking component (70) in the lithium electrode post appearance defect detection module (100).

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