Full-automatic FPC (flexible printed circuit) appearance defect detection device and detection method

Abstract

The invention discloses a full-automatic FPC appearance defect detection device and a detection method. The full-automatic FPC appearance defect detection device comprises a workbench, and the workbench is provided with a feeding unit, a detection unit and an after-detection classification unit; the feeding unit comprises a feeding platform and a feeding carrying hand, and the feeding carrying hand is used for grabbing a detected piece on the feeding platform; the detection unit comprises a positioning platform, a detection platform and a detection station; the after-inspection classification unit comprises a partition plate carrying hand, a discharging carrying hand, an OK product platform and an NG product platform. The invention relates to the technical field of FPC golden finger detection, the operation is convenient, products are automatically divided into two stacks after equipment detection, one stack is good products, the other stack is defective products, each product is independently numbered, the defective products are independently marked, and production line operation and manual re-judgment are facilitated. The product is prevented from moving in the detection process; and the air volume of the fan far exceeds the negative pressure, so that the use effect is not influenced even if part of air leaks. The platform plate is more convenient to adjust, and the leveling precision is high.

Description

Technical Field

[0001] The invention relates to the technical field of FPC gold finger detection, in particular to a device and a method for fully automatic FPC appearance defect detection. Background Art

[0002] In the modern electronic manufacturing industry, flexible printed circuit boards (FPCs) are widely used in various electronic products due to their thinness and bendability. However, in the FPC production process, the quality of the gold finger part is directly related to the performance and reliability of the entire product. Gold fingers refer to the metal contact point areas at both ends of the FPC used to connect other electronic components or circuit boards. These areas are usually treated with immersion gold or electroplating gold processes to enhance conductivity and corrosion resistance. However, even so, problems such as discoloration, foreign matter adhesion, surface scratches, material deficiencies, and oxidation corrosion are inevitable during the production process. If these problems are not discovered and handled in time, they will seriously affect the quality and service life of the final product.

[0003] There are currently three main solutions for FPC gold finger defect detection on the market: Defective products continue to flow downstream: Although this method is simple and quick, it will result in problems being discovered in the subsequent assembly stage, resulting in greater waste of resources and low production efficiency.

[0004] Manual inspection and screening: unqualified products are selected by visual inspection. This method is not only time-consuming and inefficient, but also due to the limited recognition ability of the human eye, it is difficult to ensure that all subtle defects can be accurately captured, especially for those problems with extremely small sizes (such as micrometers).

[0005] Semi-automatic CCD visual inspection system: Using machine vision technology to scan and analyze each FPC piece one by one can effectively improve the inspection accuracy and speed. However, most of the existing equipment of this type requires the operator to manually place the sample to be tested, and can only process a single object at a time, which undoubtedly increases the workload and reduces the continuity and stability of the overall process.

[0006] In view of the above situation, it is particularly important to develop a detection device that can meet the needs of high-efficiency production and ensure high accuracy. Summary of the invention

[0007] In view of the deficiencies in the prior art, the present invention provides a device and a method for fully automatic FPC appearance defect detection, which solves the problems of low production efficiency, long time consumption and low efficiency of the existing FPC gold finger detection device.

[0008] To achieve the above object, the present invention is implemented by the following technical scheme: a device for fully automatic FPC appearance defect detection, comprising a workbench, on which a loading unit, a detection unit and a post-inspection classification unit are provided; The loading unit includes a loading platform and a loading conveyor, and the loading conveyor is used to grab the inspected part on the loading platform; The detection unit includes a positioning platform, a detection platform and a detection station; the detection platform includes an X-axis motion mechanism, a Y-axis motion mechanism and a platform bracket arranged on the moving end of the Y-axis motion mechanism; the platform bracket is provided with a second platform plate with a plurality of air holes on the surface, and an adjustment sheet fixed on each side of the platform bracket, a strip groove is opened on the top of the adjustment sheet in the height direction, a bolt passes through the strip groove and a support block is fixed, the bolt is adjusted and locked in the height direction of the strip groove, so as to adjust the height of the support block to adjust the flatness of the platform plate; An air path structure is arranged on the second platform plate, a negative pressure is formed in the air path structure, and the negative pressure acts on the air holes; The post-inspection classification unit includes a partition conveyor, a material unloading conveyor, an OK product platform and an NG product platform. The material unloading conveyor will convey the inspected parts after inspection at the inspection station to the OK product platform or the NG product platform; the partition conveyor is used to grab the partition pad and place it on the surface of each inspected part on the OK product platform or the NG product platform.

[0009] Preferably, the air path structure includes a main pipeline and at least one branch pipeline arranged below the second platform plate, the branch pipeline is connected to the air hole, and negative pressure is applied to the air hole; the main pipeline is connected to a fan; the inner walls of the main pipeline and the branch pipeline are both provided with lined steel wires.

[0010] Preferably, the loading platform comprises a first platform plate, baffles are fixed on two adjacent sides of the platform plate, and an anti-adhesion brush is arranged along the height direction of the baffles.

[0011] Preferably, the loading and conveying arm includes an X-axis moving mechanism, a first lifting mechanism is arranged on the moving end of the X-axis moving mechanism in the height direction, a first conveying mechanism is arranged on the telescopic end of the first lifting mechanism, and the first conveying mechanism includes an aluminum profile frame and a suction nozzle arranged on the aluminum profile frame.

[0012] Preferably, the partition conveying hand and the unloading conveying hand both include a second lifting mechanism, a Y-axis moving mechanism is provided at the moving end of the second lifting mechanism, a second conveying mechanism is provided on the moving end of the Y-axis moving mechanism, and the second conveying mechanism includes a profile frame and a suction cup arranged on the profile frame.

[0013] Preferably, the positioning platform includes a platform body, and an X-direction correction mechanism and a Y-direction correction mechanism are arranged on two adjacent sides of the platform body. The X-direction correction mechanism and the Y-direction correction mechanism both include a cylinder, and a strip plate is fixed to the output end of the cylinder, and the strip plate is arranged along the side length direction of the platform body.

[0014] Preferably, the inspection station includes a gantry, a height lifting mechanism is fixed on the gantry, an inspection camera and an inkjet printer are fixed at the output end of the height lifting mechanism, and the inspection camera and the inkjet printer are electrically connected to a controller and a display.

[0015] A detection method for a fully automatic FPC appearance defect detection device, the detection method is performed by any of the above-mentioned devices for fully automatic FPC appearance defect detection, comprising the following steps: S1. The loading and conveying hand grabs the inspected part on the loading platform and places it on the platform body of the positioning platform. The cylinder drives the strip plate to rise so that the strip plate protrudes from the positioning platform. The adjacent two sides of the inspected part are attached to the strip plate to correct the positioning of the inspected part; the loading and conveying hand grabs the corrected inspected part onto the inspection platform; S2. The fan works to make negative pressure act on the air holes of the second platform plate through the air path structure, so as to adsorb and fix the inspected part; S3. The height lifting mechanism adjusts the operating height of the inspection camera and the inkjet printer. The inspection camera scans the gold finger drawing on the inspected part and determines whether there is a defect. After the entire product is inspected, if there is a defect, the inkjet printer will mark the defective part; S4, the X-axis motion mechanism and the Y-axis motion mechanism drive the inspection platform to move to the post-inspection classification unit, and the products are grabbed by the unloading and conveying hands. OK products are placed on the OK product platform, and NG products are placed on the NG product platform.

[0016] Preferably, the inspected piece has a first inspection part and a second inspection part. When all the inspection results of the first inspection part and the second inspection part are OK, the whole result is judged to be OK. When any one of the inspection results of the first inspection part and the second inspection part is NG, the whole result is judged to be NG, and the specific position of the defective point is displayed on the display.

[0017] Preferably, the first detection part and the second detection part are divided into a plurality of detection sections from top to bottom along the setting direction.

[0018] Beneficial effects of the present invention: By using a device and a method for fully automatic FPC appearance defect detection provided by the present invention, the following technical effects are achieved compared with the prior art: 1. The whole batch loading design is adopted. Workers only need to complete the loading of raw materials at one time to start the entire testing process without frequent intervention. When the test is completed, good and defective products will be automatically classified and stacked, which greatly reduces the manpower input.

[0019] 2. This system can achieve highly sensitive identification of tiny defects with high detection accuracy, effectively reducing the missed detection rate and ensuring that only products that truly meet the standards can enter the next stage.

[0020] 3. Easy to operate. After detection, the equipment automatically divides the products into two piles, one for good products and the other for defective products. Each product is individually numbered and defective products are individually marked, which is convenient for production line operation and manual re-judgment.

[0021] 4. High working efficiency. The robot arm carries out transportation and detection simultaneously, basically achieving a seamless connection. The scanning speed is 128mm / s, which is far higher than the speed of manual detection.

[0022] 5. The inspected part is not easy to overlap with the hollow part, and the vacuum will not be broken, so that the platform has suction to prevent the product from moving during the inspection process; and the fan air volume far exceeds the negative pressure, even if there is some air leakage, it does not affect the use effect. Compared with the common top screw adjustment on the market, the platform plate is more convenient to adjust and has a longer life. The top screw will not lose its function after a period of time, and the leveling accuracy is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of a device for fully automatic FPC appearance defect detection according to the present invention; Figure 2 This is a schematic diagram of the three-dimensional structure of the feeding platform of the present invention; Figure 3 This is a schematic diagram of the three-dimensional structure of the loading and transporting arm of the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the partition conveying hand and the material unloading conveying hand of the present invention; Figure 5 This is a schematic diagram of the three-dimensional structure of the positioning platform of the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the detection platform of the present invention; Figure 7 This is a schematic diagram of the three-dimensional structure of the detection station of the present invention; Figure 8 It is a schematic diagram of the structure of the regulating mechanism of the present invention; Fig. 9 This is a schematic diagram of the first detection part A and the second detection part B of the detected part being divided into a plurality of detection sections; Fig.10 Schematic diagram of the positions of the first detection part A and the second detection part B of the present invention.

[0024] Description of reference numerals in the figures 1. Loading platform, 2. OK product platform, 3. NG product platform, 4. Loading conveyor, 5. Partition conveyor, 6. Unloading conveyor, 7. Positioning platform, 8. Testing platform, 9. Testing station; 10. first platform plate, 11. baffle bar, 12. anti-adhesion brush; 13. First conveying mechanism, 14. First lifting mechanism, 15. X-axis moving mechanism; 16. Second conveying mechanism, 17. Y-axis moving mechanism, 18. Second lifting mechanism; 19. Platform body, 20. X-direction correction mechanism, 21. Y-direction correction mechanism; 22. second platform plate, 23. platform bracket, 24. X-axis motion mechanism, 25. Y-axis motion mechanism, 26. gas path structure, 261. main pipeline, 262. branch pipeline; 27. Detection camera, 28. Inkjet printer; 29. Support block, 30. Adjustment sheet. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. As long as the effects of the present invention can be exerted, various changes can be made to the implementation scheme.

[0026] By those skilled in the art, the components in this case are connected in sequence. The specific connection and operation sequence should refer to the following working principle. The detailed connection means are well-known technologies in the art. The following mainly introduces the working principle and process.

[0027] Reference Figure 1-10 A device for fully automatic FPC appearance defect detection according to this implementation scheme is described.

[0028] The device for fully automatic FPC appearance defect detection comprises a workbench, on which a feeding unit, a detection unit and a post-detection classification unit are arranged.

[0029] like Figure 1 As shown, the loading unit includes a loading platform 1 and a loading conveyor 4, and the loading conveyor 4 is used to grab the inspected piece on the loading platform 1. The inspection unit includes a positioning platform 7, an inspection platform 8 and an inspection station 9. The positioning platform 7 is used to align the inspected piece, and after alignment, the inspected piece is transferred to the inspection station 9 on the inspection platform 8 by the loading conveyor 4. The post-inspection classification unit includes a partition conveyor 5, a material unloading conveyor 6, an OK product platform 2 and an NG product platform 3.

[0030] like Figure 2 As shown, the loading platform 1 includes a first platform plate 10, on which stacked parts to be tested (FPC gold fingers) are placed, and the parts are loaded manually or mechanically. When loading, it should be noted that no more than one piece should be loaded. Baffles 11 are fixed on the adjacent sides of the first platform plate 10, and anti-adhesion brushes 12 are arranged in the height direction of the baffles 11. When the loading and conveying hand 4 grabs a piece of the part to be tested and rises, the edge of the part to be tested contacts the anti-adhesion brush 12 to generate friction, which can prevent multiple parts to be tested from being grabbed at one time.

[0031] like Figure 3 As shown, the loading and conveying hand 4 includes an X-direction moving mechanism 15, and a first lifting mechanism 14 is arranged on the moving end of the X-direction moving mechanism 15 in the height direction, and a first conveying mechanism 13 is arranged on the telescopic end of the first lifting mechanism 14, and the first conveying mechanism 13 includes an aluminum profile frame and a suction nozzle arranged on the aluminum profile frame. The suction nozzle can be an electric suction cup or a vacuum suction cup. The X-direction moving mechanism 15 is a ball screw nut mechanism driven by a servo motor. The first lifting mechanism 14 is a cylinder. The first lifting mechanism 14 descends, so that the suction nozzle absorbs the inspected part, and then the first lifting mechanism 14 rises, and the X-direction moving mechanism 15 moves laterally to move the inspected part to the positioning platform 7, and the first lifting mechanism 14 descends to place the inspected part on the surface of the positioning platform 7. The X-direction moving mechanism 15 resets and moves laterally.

[0032] like Figure 5 As shown, the positioning platform 7 includes a platform body 19, and an X-direction correction mechanism 20 and a Y-direction correction mechanism 21 are arranged on two adjacent sides of the platform body 19. The X-direction correction mechanism 20 and the Y-direction correction mechanism 21 both include cylinders, and a strip plate is fixed to the output end of the cylinder, and the strip plate is arranged along the length direction of the side of the platform body 19. The cylinders of the X-direction correction mechanism 20 and the Y-direction correction mechanism 21 drive the strip plate to rise, and the first lifting mechanism 14 descends to place the detected part on the surface of the positioning platform 7 and fits it on the inner wall of the strip plate.

[0033] like Figure 6 As shown, the detection platform 8 includes an X-axis motion mechanism 24, a Y-axis motion mechanism 25, and a platform bracket 23 disposed on the moving end of the Y-axis motion mechanism 25; the X-axis motion mechanism 24 and the Y-axis motion mechanism 25 are ball screw nut mechanisms, the X-axis motion mechanism 24 is driven by a linear motor, and the Y-axis motion mechanism 25 is driven by a servo motor. A second platform plate 22 with a plurality of air holes on the surface is disposed on the platform bracket 23. The loading and conveying hand 4 then grabs the corrected test piece onto the detection platform 8 for testing.

[0034] like Figure 8As shown, an adjustment mechanism is provided on the platform bracket 23 for leveling the second platform plate 22. The adjustment mechanism includes an adjustment sheet 30 fixed on each side of the platform bracket 23, a strip groove is opened above the adjustment sheet 30 in the height direction, a bolt passes through the strip groove and a support block 29 is fixed, the bolt is adjusted and locked in the height direction of the strip groove, and the support block 29 is adjusted up and down with the bolt, so as to adjust the height of the support block 29 to adjust the flatness of the second platform plate 22, so that the flatness is finally within 0.03mm.

[0035] like Figure 6 As shown, an air path structure 26 is provided on the second platform plate 22, and negative pressure is formed in the air path structure 26, and the negative pressure acts on the air holes; the air path structure 26 includes a main pipeline 261 and at least one branch pipeline 262 provided below the second platform plate 22, and the branch pipeline 262 is connected to the air holes, and the negative pressure acts on the air holes. There are two branch pipelines 262, one end of the two branch pipelines 262 is connected, and the other end is connected to the main pipeline 261 through a hose (not shown in the figure). In one embodiment, the number of air holes is 10201; the main pipeline 261 is connected to a fan, and the maximum air volume reaches 210m3 / h and the maximum suction pressure is 24kPa in actual implementation, and it can be compatible with all products with a length and width of ≤500mm; the inner walls of the main pipeline 261 and the branch pipeline 262 are both provided with lined steel wires, which avoids the problem that the pipeline is deformed by negative pressure and affects the suction effect.

[0036] During operation, the inspected part is not easy to overlap with the hollow part, and the vacuum will not be broken, so that the platform has suction to prevent the product from moving during the inspection process; and the fan air volume far exceeds the negative pressure, even if there is some air leakage, it will not affect the use effect.

[0037] like Figure 7 As shown, the inspection station 9 includes a gantry, on which a height lifting mechanism is fixed, and an inspection camera 27 and an inkjet printer 28 are fixed at the output end of the height lifting mechanism, and the inspection camera 27 and the inkjet printer 28 are electrically connected to the controller and the display. The height lifting mechanism is a ball screw nut mechanism driven by a servo motor. The inspection camera 27 uses a black and white line scan camera, and the inspection speed can reach 128mm / s; the inkjet printer 28 uses a high-speed quick-drying inkjet printer, which has the characteristics of environmental protection, easy drying and easy cleaning, and can meet the maximum inkjet speed of 1.2m / s, with extremely high efficiency.

[0038] like Figure 4As shown, both the partition conveying hand 5 and the blanking conveying hand 6 include a second lifting mechanism 18, and the moving end of the second lifting mechanism 18 is provided with a Y-direction moving mechanism 17, and the Y-direction moving mechanism 17 is a ball screw nut mechanism driven by a servo motor. The moving end of the Y-direction moving mechanism 17 is provided with a second conveying mechanism 16, and the second conveying mechanism 16 includes an aluminum profile frame and a suction nozzle arranged on the aluminum profile frame, and the suction nozzle is an electric suction nozzle or a vacuum suction nozzle. The blanking conveying hand 6 conveys the inspected parts after inspection at the inspection station 9 to the OK product platform 2 or the NG product platform 3; the partition conveying hand 5 is used to grab the spacers and place them on the surface of each inspected part on the OK product platform 2 or the NG product platform 3.

[0039] This embodiment also provides a device detection method for fully automatic FPC appearance defect detection, which is performed by the above-mentioned device for fully automatic FPC appearance defect detection, and includes the following steps: S1. The loading and conveying hand 4 grabs the inspected piece on the loading platform 1 and places it on the platform body 19 of the positioning platform 7. The cylinder drives the strip plate to rise so that the strip plate protrudes from the positioning platform 7. The adjacent two sides of the inspected piece are attached to the strip plate to correct the positioning of the inspected piece; the loading and conveying hand 4 grabs the corrected inspected piece and places it on the inspection platform 8; S2, the fan works to make negative pressure act on the air holes of the second platform plate 22 through the air path structure 26, so as to adsorb and fix the detected part; S3, the height lifting mechanism adjusts the use height of the inspection camera 27 and the inkjet printer 28, the inspection camera 27 scans the gold finger drawing on the inspected part and determines whether there is a defect. After the whole product is inspected, if there is a defect, the inkjet printer 28 marks the defective part; S4, the X-axis motion mechanism 24 and the Y-axis motion mechanism 25 drive the inspection platform 8 to move to the post-inspection classification unit, the product is grabbed by the unloading conveying hand 6, the OK product is placed on the OK product platform 2, and the NG product is placed on the NG product platform 3.

[0040] The stack of products on the OK product platform 2 and the NG product platform 3 are placed in the order of one product and one spacer. So when the inspected piece is taken away by the loading and conveying hand 4, the spacer conveying hand 5 will move to the loading platform 1, grab the spacer and place it in the designated position. Repeat the above actions until all the products in the stack are inspected and placed separately according to OK and NG.

[0041] like Fig.10As shown, the inspected piece has a first inspection part A and a second inspection part B. When the inspected piece is inspected in the above step 3, if all the inspection results of the first inspection part A and the second inspection part B are OK, the whole sheet result is determined to be OK. If any of the inspection results of the first inspection part A and the second inspection part B are NG, the whole sheet result is determined to be NG. For example, the inspection result of the first inspection part A is NG, the inspection result of the second inspection part B is OK, and the whole sheet result is NG. The inspection result of the first inspection part A is OK, the inspection result of the second inspection part B is NG, and the whole sheet result is NG. The inspection result of the first inspection part A is OK, the inspection result of the second inspection part B is OK, and the whole sheet result is NG. The inspection result of the first inspection part A is OK, the inspection result of the second inspection part B is OK, and the whole sheet result is OK. The specific location of the defective point is displayed on the display.

[0042] like Fig. 9 As shown, the first detection part A and the second detection part B are divided into several detection sections from top to bottom along the setting direction. For example, the upper, middle and lower sections, the ROI threshold is set for regional detection. The upper, middle and lower areas can be set freely. For example, when a certain value is set to 0, the three areas become two areas.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for fully automatic FPC appearance defect detection, characterized in that: It comprises a workbench, on which a loading unit, a detection unit and a post-inspection classification unit are arranged; The loading unit includes a loading platform and a loading conveyor, and the loading conveyor is used to grab the inspected part on the loading platform; The detection unit includes a positioning platform, a detection platform and a detection station; the detection platform includes an X-axis motion mechanism, a Y-axis motion mechanism and a platform bracket arranged on the moving end of the Y-axis motion mechanism; the platform bracket is provided with a second platform plate with a plurality of air holes on the surface, and an adjustment sheet fixed on each side of the platform bracket, a strip groove is opened on the top of the adjustment sheet in the height direction, a bolt passes through the strip groove and a support block is fixed, the bolt is adjusted and locked in the height direction of the strip groove, so as to adjust the height of the support block to adjust the flatness of the platform plate; An air path structure is arranged on the second platform plate, a negative pressure is formed in the air path structure, and the negative pressure acts on the air holes; The post-inspection classification unit includes a partition conveyor, a material unloading conveyor, an OK product platform and an NG product platform. The material unloading conveyor will convey the inspected parts after inspection at the inspection station to the OK product platform or the NG product platform; the partition conveyor is used to grab the partition pad and place it on the surface of each inspected part on the OK product platform or the NG product platform.

2. The device for fully automatic FPC appearance defect detection according to claim 1 is characterized in that: The air path structure includes a main pipeline and at least one branch pipeline arranged below the second platform plate, wherein the branch pipeline is connected to the air hole and negative pressure is applied to the air hole; the main pipeline is connected to a fan; and the inner walls of the main pipeline and the branch pipeline are both provided with lining steel wires.

3. The device for fully automatic FPC appearance defect detection according to claim 1 is characterized in that: The loading platform comprises a first platform plate, baffles are fixed on two adjacent sides of the platform plate, and anti-adhesion brushes are arranged along the height direction of the baffles.

4. The device for fully automatic FPC appearance defect detection according to claim 1 is characterized in that: The loading and conveying arm includes an X-direction moving mechanism, a first lifting mechanism is arranged on the moving end of the X-direction moving mechanism in the height direction, a first conveying mechanism is arranged on the telescopic end of the first lifting mechanism, and the first conveying mechanism includes an aluminum profile frame and a suction nozzle arranged on the aluminum profile frame.

5. The device for fully automatic FPC appearance defect detection according to claim 1 is characterized in that: The partition conveying hand and the unloading conveying hand both include a second lifting mechanism, a Y-axis moving mechanism is provided at the moving end of the second lifting mechanism, a second conveying mechanism is provided on the moving end of the Y-axis moving mechanism, and the second conveying mechanism includes a profile frame and a suction cup provided on the profile frame.

6. The device for fully automatic FPC appearance defect detection according to claim 1 is characterized in that: The positioning platform includes a platform body, and an X-direction correction mechanism and a Y-direction correction mechanism are arranged on two adjacent sides of the platform body. The X-direction correction mechanism and the Y-direction correction mechanism both include a cylinder, and a strip plate is fixed to the output end of the cylinder. The strip plate is arranged along the length direction of the side of the platform body.

7. The device for fully automatic FPC appearance defect detection according to claim 1 is characterized in that: The inspection station comprises a gantry, a height lifting mechanism is fixed on the gantry, an inspection camera and an inkjet printer are fixed at the output end of the height lifting mechanism, and the inspection camera and the inkjet printer are electrically connected to a controller and a display.

8. A detection method for a device for fully automatic FPC appearance defect detection, the detection method is performed by a device for fully automatic FPC appearance defect detection according to any one of claims 1 to 7, comprising the following steps: S1. The loading and conveying hand grabs the inspected part on the loading platform and places it on the platform body of the positioning platform. The cylinder drives the strip plate to rise so that the strip plate protrudes from the positioning platform. The adjacent two sides of the inspected part are attached to the strip plate to correct the positioning of the inspected part; the loading and conveying hand grabs the corrected inspected part onto the inspection platform; S2. The fan works to make negative pressure act on the air holes of the second platform plate through the air path structure, so as to adsorb and fix the inspected part; S3. The height lifting mechanism adjusts the operating height of the inspection camera and the inkjet printer. The inspection camera scans the gold finger drawing on the inspected part and determines whether there is a defect. After the entire product is inspected, if there is a defect, the inkjet printer will mark the defective part; S4, the X-axis motion mechanism and the Y-axis motion mechanism drive the inspection platform to move to the post-inspection classification unit, and the products are grabbed by the unloading and conveying hands. OK products are placed on the OK product platform, and NG products are placed on the NG product platform.

9. The method for fully automatic FPC appearance defect detection according to claim 8, characterized in that: The inspected piece has a first inspection part and a second inspection part. When all the inspection results of the first inspection part and the second inspection part are OK, the whole result is determined to be OK. When any one of the inspection results of the first inspection part and the second inspection part is NG, the whole result is determined to be NG, and the specific position of the defective point is displayed on the display.

10. The method for fully automatic FPC appearance defect detection according to claim 9, characterized in that: The first detection part and the second detection part are divided into a plurality of detection sections from top to bottom along the setting direction.

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