AVI one-driving-two testing and sorting integrated automation device and method

Abstract

The invention discloses an AVI one-driving-two testing and sorting integrated automation device and method. The device comprises an automatic feeding lifting table A, an automatic feeding lifting table B, an electrical testing machine A, an electrical testing machine B, a post-material-number-test OK and NG plate table storage table A, a post-material-number-test OK and NG plate table storage table B, a buffer section A, a buffer section B, a discharging conveyor A, a discharging conveyor B, a signal transmission sensor, an AVI detection machine, a discharging lifting table and temporary storage area, a feeding section, a sorting manipulator and an OK plate storage area. An NG plate storage area and an NG plate maintenance area. According to the AVI one-driving-two testing and sorting integrated automation device and method, the production efficiency is remarkably improved, the tedious process of manual carrying and circulation is successfully replaced, and great convenience is brought to field management. And meanwhile, the quality risk and the labor cost are effectively reduced, and powerful technical support is provided for optimization and upgrading of an automatic production line.

Description

Technical Field

[0001] The present application belongs to the technical field of printed circuit board detection, and in particular, relates to an AVI one-to-two test and sorting integrated automation device and method. Background Art

[0002] In the field of circuit board manufacturing, after the circuit board is formed, in order to ensure that its quality and performance meet the established standards, the finished product must undergo a series of rigorous testing processes. This mainly includes the electrical testing process and the AVI (Automatic Visual Inspection) process. The former is used to verify whether the electrical performance of the circuit board meets the standards, while the latter focuses on evaluating whether its appearance quality meets the requirements. In addition, the complete finished product inspection system also covers the qualified product sorting process to ensure that the final delivered products are qualified products.

[0003] However, under the existing technical framework, the electrical testing process, AVI process and qualified product sorting process are often divided into independent operation steps. These steps are carried out by manual handling to realize the flow of materials between different machines, and rely on manual operation to complete the loading and unloading and qualified product sorting. Although this operation mode meets the production needs to a certain extent, it exposes the following technical shortcomings:

[0004] 1. High labor costs and management challenges: The finished product inspection process generally relies on a large amount of manual operations, which not only leads to high labor costs, but also greatly increases the complexity and difficulty of on-site management. At the same time, the quality risks that may be introduced by human factors cannot be ignored, posing a potential threat to product quality.

[0005] 2. Capacity mismatch and resource waste: In the current testing process, the detection rate of electrical testers is relatively low, and each device can only detect 5-6 PCS circuit boards per minute; while AVI testers have higher detection efficiency and can detect more than 10 PCS circuit boards per minute. This mismatch in detection rate has caused the AVI tester to be idle for some time periods, resulting in a waste of valuable production capacity.

[0006] In summary, the circuit board finished product inspection process in the prior art has technical problems that need to be solved in terms of cost control, efficiency improvement, and quality assurance. Summary of the invention

[0007] One of the purposes of the present application is to provide an AVI one-to-two test and sorting integrated automation device and method to solve the above-mentioned technical problems.

[0008] In order to achieve the above application purpose, the technical solution adopted in this application is as follows:

[0009] The embodiment of the present application provides an AVI one-to-two test sorting integrated automation device, comprising:

[0010] Automatic loading lifting platform A and automatic loading lifting platform B are used to automatically load the finished circuit boards to be tested;

[0011] Electrical testing machine A and electrical testing machine B, electrical testing machine A is used to perform electrical testing on the material loading of automatic loading lifting platform A, and electrical testing machine B is used to perform electrical testing on the material loading of automatic loading lifting platform B;

[0012] The storage table A for OK and NG boards after material number testing and the storage table B for OK and NG boards after material number testing are used to store the finished circuit boards tested by the electrical tester A, and the storage table B for OK and NG boards after material number testing is used to store the finished circuit boards tested by the electrical tester B;

[0013] Buffer segment A and buffer segment B. Buffer segment A is used to buffer the finished circuit boards that have been tested for material numbers and are OK or NG and have flowed out of board storage station A. Buffer segment B is used to buffer the finished circuit boards that have been tested for material numbers and are OK or NG and have flowed out of board storage station B.

[0014] The outfeed conveyor A and the outfeed conveyor B, the outfeed conveyor A is used to convey the finished circuit boards flowing out of the buffer section A, and the outfeed conveyor B is used to convey the finished circuit boards flowing out of the buffer section B;

[0015] Signal transmission sensors are used to cooperate with the first-out first-in sensing and first-come first-out detection principles;

[0016] AVI testing machine: a single AVI testing machine is connected to both discharge conveyor A and discharge conveyor B to achieve one-to-two AVI testing;

[0017] The discharging lifting platform and temporary storage area are connected to the discharging port of the AVI inspection machine;

[0018] The feeding section is connected with the discharging lifting platform and the discharging port of the temporary storage area;

[0019] The sorting robot is used to automatically sort the finished circuit boards flowing out from the upstream to the OK board storage area, NG board storage area or NG board inspection area.

[0020] The embodiment of the present application also provides an AVI one-to-two test sorting integrated automation method, which is implemented by using the above-mentioned AVI one-to-two test sorting integrated automation device, and the method includes:

[0021] (1) Automatic loading lifting platform A identifies the material number of the finished circuit board on its feeding side, and automatically transmits the material number information to the AVI inspection machine and the sorting robot, and automatically places the finished circuit board into the feeding port of the electrical testing machine A; Automatic loading lifting platform B identifies the material number of the finished circuit board on its feeding side, and automatically transmits the material number information to the AVI inspection machine and the sorting robot, and automatically places the finished circuit board into the feeding port of the electrical testing machine B;

[0022] (2) Electrical test machine A is connected to the automatic loading lifting platform A of the loader, and provides the AVI detection data switching signal source. The discharging arm of electrical test machine A is equipped with a coding machine to mark the serial number status to avoid abnormal testing and OK mixing of boards. The sorting arm CCD recognizes abnormal serial numbers and status and automatically alarms; electrical test machine B is connected to the automatic loading lifting platform B of the loader, and provides the AVI detection data switching signal source. The discharging arm of electrical test machine B is equipped with a coding machine to mark the serial number status to avoid abnormal testing and OK mixing of boards. The sorting arm CCD recognizes abnormal serial numbers and status and automatically alarms;

[0023] (3) After the material number test, the OK board and NG board storage table A is used to store the finished circuit boards that have been tested by the electrical test machine A and distinguished as the test OK board and the test NG board. The OK board signal is transmitted to the AVI inspection machine to switch data through the material discharge sensor after unloading, and the NG board signal is not transmitted to avoid mixing of boards; After the material number test, the OK board and NG board storage table B is used to store the finished circuit boards that have been tested by the electrical test machine B and distinguished as the test OK board and the test NG board. The OK board signal is transmitted to the AVI inspection machine to switch data through the material discharge sensor after unloading, and the NG board signal is not transmitted to avoid mixing of boards;

[0024] (4) After the test of electrical tester A is completed, it is temporarily stored in cache segment A. After the test of electrical tester B is completed, it is temporarily stored in cache segment B. The sensor cache board on the corresponding cache segment senses it. According to the first-in-first-out principle, the first-in cache board has priority to enter the AVI detection machine. This section of transportation is separated from other sections to solve the problem of detection speed difference.

[0025] (5) According to the material number information transmitted by electrical tester A and electrical tester B, AVI test is performed on the finished circuit boards that have passed the inspection of electrical tester A and electrical tester B, and data is automatically retrieved from the newly created database based on the material output information of the front buffer segment and identification, without human intervention;

[0026] (6) The A and B material numbers are distinguished by induction. After passing through the AVI inspection machine, the boards with the same material number are collected by the robotic arm and temporarily stored in a pile to wait for sorting;

[0027] (7) The finished circuit boards are transported from the feeding section to the sorting robot, and the analysis results of the AVI inspection machine are read by identifying the QR code or the serial number on the board, and the A material number and the B material number are distinguished. The finished circuit boards with an analysis result of 0 defects are listed as OK boards; the finished circuit boards with an analysis result of > 0 defects are listed as NG boards;

[0028] (8) Grab the finished circuit board, identify the mark set in step (2), identify the position through CCD, and place it in the corresponding storage area; the OK board storage area is used to store OK boards, the NG board storage area is used to store NG boards, and the NG board inspection area is used to store NG boards for inspection and testing.

[0029] In some embodiments, in step (1), the boards on the tray are transferred to the testing machine by visual recognition, and the loading platform transmits data information to the testing machine. When the loading platform senses the boards, it transmits a signal to the testing machine to retrieve the testing machine data, thereby avoiding manual intervention. The material number information of the automatic loading lift A and the automatic loading lift B is processed based on the first-come-first-tested principle to achieve automatic loading and unloading.

[0030] In some embodiments, in step (2), electrical testing machine A and electrical testing machine B are respectively connected to the AVI testing machine, so that the two testing machines can synchronously measure the same material number or different material numbers.

[0031] In some embodiments, in step (3), the boards after passing through the testing machine are divided into test OK boards and test NG boards. The test OK boards are transmitted to the AVI inspection machine through the board output conveyor. The AVI inspection machine automatically switches to analyze the data based on the signal from the board output conveyor and the board machine material number.

[0032] In some embodiments, in step (4), electrical test machine A and electrical test machine B are temporarily stored in this cache conveying section after the test is completed, and are sensed by the sensor cache board on the corresponding cache section. According to the first-in-first-out principle, the first-in cache board enters the AVI detection machine first.

[0033] In some embodiments, in step (5), the board after testing by electrical tester A and electrical tester B is automatically switched to be scanned according to the material number information transmitted before AVI to perform appearance inspection.

[0034] In some embodiments, in step (6), the boards with the same material number after passing through the AVI inspection machine 70 are collected by a robotic arm and temporarily stored in a pile, with 50 to 100 sets of boards in each pile, and the A and B material numbers are distinguished by sensing here;

[0035] After the lifting platform piles up the boards, a temporary storage area is needed to store the boards to be sorted. Two piles can be temporarily stored before sorting according to the maximum set size of 400*500mm.

[0036] In some embodiments, in step (8), the robot takes the board from the feeding section, corresponds to the board information through the associated AVI inspection machine, and reads the analysis result of the AVI inspection machine by identifying the QR code or the board serial number on the board. After the two information match, the board with an analysis result of 0 defects is an OK board, which is taken to the OK board storage area by the sorting robot. The board with an analysis result > 0 defects is temporarily listed as an NG board and taken to the NG board storage area.

[0037] Compared with the prior art, the beneficial effects of the embodiments of the present application are:

[0038] The application provides an AVI one-to-two test sorting integrated automation device and method, which not only significantly improves production efficiency, but also successfully replaces the cumbersome process of manual handling and circulation, bringing great convenience to on-site management. At the same time, the implementation of this application also effectively reduces quality risks and labor costs, and provides strong technical support for the optimization and upgrading of automated production lines. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0040] Figure 1 A structural schematic diagram of an AVI one-to-two test and sorting integrated automation device provided in an embodiment of the present application is shown.

[0041] Illustration Description:

[0042] 11. Automatic loading lifting platform A; 12. Automatic loading lifting platform B;

[0043] 21. Electrical testing machine A; 22. Electrical testing machine B;

[0044] 31. After the material number test, the OK and NG pallets are stored at table A; 32. After the material number test, the OK and NG pallets are stored at table B;

[0045] 41. Cache segment A; 42. Cache segment B;

[0046] 51. Discharging conveyor A; 52. Discharging conveyor B;

[0047] 60. Signal transmission sensor;

[0048] 70. AVI testing machine;

[0049] 80. Material discharging lifting platform and temporary storage area;

[0050] 90. Feeding section;

[0051] 100. Sorting robot;

[0052] 110. OK board storage area;

[0053] 120. NG board storage area;

[0054] 130. NG board maintenance area. DETAILED DESCRIPTION

[0055] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0056] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0057] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0058] In the field of circuit board manufacturing, related technologies face the following four major challenges:

[0059] First, the incompatibility between the electrical test machine and the AVI (Automated Visual Inspection) test machine in terms of production board size limits the test scope;

[0060] Second, the need for manual adjustment of test data increases operational complexity and the risk of errors;

[0061] Third, the mismatch between electrical testing and AVI testing in efficiency affects the smoothness of the overall production line;

[0062] Fourth, it is difficult to accurately identify multiple material numbers at the same time during the sorting process, which reduces the accuracy and efficiency of sorting.

[0063] In view of this, this application innovatively proposes an AVI one-to-two test sorting integrated automation device and method, aiming to overcome the multiple limitations of the prior art. Specifically, in response to the above difficulties, this application proposes the following four innovative solutions:

[0064] 1. Adjustable test frame design: An adjustment block is added to the test frame mounting base of the electrical test machine, so that the test frame can flexibly adjust its size to perfectly match the production size requirements of the AVI inspection machine. This design not only realizes the compatible production of large and small boards, but also successfully connects the electrical test machine with the AVI inspection machine seamlessly, follows the first-in-first-out principle, and optimizes the production process.

[0065] 2. Automatically associated data folders: By creating automatically associated data folders, this application avoids the tedious process of manually adjusting the test data, realizes the automatic management and updating of the test data, and significantly improves work efficiency and accuracy.

[0066] 3. First-in-first-out sensing and caching mechanism: Before AVI testing, this application sets up a first-in-first-out sensor and is equipped with an area to cache the boards to be tested. This mechanism ensures the orderly flow of test boards (finished circuit boards) based on the logic of first-in-first-out, further improving the overall efficiency of the production line.

[0067] 4. CCD visual inspection and accurate identification: By installing a CCD visual inspection system on the board placement robot and combining it with the board marking method, this application can accurately read the board markings and accurately identify the status of the board. This technology not only solves the problem of difficulty in accurately identifying multiple material numbers at the same time during the sorting process, but also realizes the automation and precision of board placement.

[0068] In summary, the AVI one-to-two test sorting integrated automation device and method provided by this application not only significantly improves production efficiency, but also successfully replaces the cumbersome process of manual handling and circulation, bringing great convenience to on-site management. At the same time, the implementation of this application also effectively reduces quality risks and labor costs, and provides strong technical support for the optimization and upgrading of automated production lines.

[0069] In order to illustrate the technical solution described in this application, a specific embodiment is provided below for illustration.

[0070] See also Figure 1 As shown, the embodiment of the present application provides an AVI one-to-two test sorting integrated automation device, comprising:

[0071] The automatic loading lifting platform A11 and the automatic loading lifting platform B12 are used for automatically loading the finished circuit boards to be tested.

[0072] Electrical testing machine A21 and electrical testing machine B22, electrical testing machine A21 is used to perform electrical testing on the loading of automatic loading lifting platform A11, and electrical testing machine B22 is used to perform electrical testing on the loading of automatic loading lifting platform B12.

[0073] The OK and NG board storage table A31 after material number testing and the OK and NG board storage table B32 after material number testing, the OK and NG board storage table A31 after material number testing is used to store the finished circuit boards tested by the electrical testing machine A21, and the OK and NG board storage table B32 after material number testing is used to store the finished circuit boards tested by the electrical testing machine B22.

[0074] Cache segment A41 and cache segment B42, cache segment A41 is used to cache the finished circuit boards that flow out of the OK and NG pallet storage station A31 after the material number test, and cache segment B42 is used to cache the finished circuit boards that flow out of the OK and NG pallet storage station B32 after the material number test.

[0075] The discharging conveyor A51 and the discharging conveyor B52, the discharging conveyor A51 is used to convey the finished circuit boards flowing out of the buffer section A41, and the discharging conveyor B52 is used to convey the finished circuit boards flowing out of the buffer section B42.

[0076] The signal transmission sensor 60 is used to cooperate to realize the first-out first-in sensing and first-come first-out detection principle.

[0077] AVI inspection machine 70, a single AVI inspection machine 70 is connected to the discharge conveyor A51 and the discharge conveyor B52 at the same time, realizing AVI one-to-two testing.

[0078] The material discharging lifting platform and the temporary storage area 80 are connected to the material discharging port of the AVI inspection machine 70 .

[0079] The feeding section 90 is connected to the discharging lifting platform and the discharging port of the temporary storage area 80 .

[0080] The sorting robot 100 is used to automatically sort the finished circuit boards flowing out from the upstream to the OK board storage area 110, the NG board storage area 120 or the NG board inspection area 130. Specifically, the OK board storage area 110 is connected to one side of the sorting robot 100; the NG board storage area 120 and the NG board inspection area 130 are connected in sequence to the other side of the sorting robot 100.

[0081] In some embodiments, an AVI one-to-two test sorting integrated automation method is also disclosed, which is implemented using the above-mentioned AVI one-to-two test sorting integrated automation device. The method includes the following steps:

[0082] (1) Automatic loading lifting platform A11 and automatic loading lifting platform B12:

[0083] The automatic loading lifting platform A11 identifies the material number of the finished circuit board on its feeding side, and automatically transmits the material number information to the AVI inspection machine 70 and the sorting robot 100, and automatically puts the finished circuit board into the feeding port of the electrical testing machine A21.

[0084] The automatic loading lifting platform B12 identifies the material number of the finished circuit board on its feeding side, and automatically transmits the material number information to the AVI inspection machine 70 and the sorting robot 100, and automatically puts the finished circuit board into the feeding port of the electrical testing machine B22.

[0085] Specifically, during the board preparation stage, the boards on the tray (i.e., finished circuit boards) are transmitted to the testing machines (electrical testing machines A21 and electrical testing machines B22) through visual recognition, and the loading platforms (automatic loading lifts A11 and automatic loading lifts B12) transmit data information to the testing machines. When the loading platform senses the boards, it transmits signals to the testing machines to retrieve the testing machine data, thus avoiding manual intervention. Based on the first-come-first-tested principle, the material number information of the automatic loading lifts A11 and the automatic loading lifts B12 is processed to realize automatic loading and unloading.

[0086] (2) Electrical testing machine A21 and electrical testing machine B22:

[0087] The electrical testing machine A21 is connected to the automatic feeding lifting platform A11 of the loader to provide the AVI detection data switching signal source. The discharging arm of the electrical testing machine A21 is equipped with a coding machine to mark the serial number status to avoid test abnormalities and OK mixed boards. The sorting arm CCD recognizes abnormal serial numbers and status and automatically alarms.

[0088] The electrical testing machine B22 is connected to the automatic feeding lifting platform B12 of the loader to provide the AVI detection data switching signal source. The discharging arm of the electrical testing machine B22 is equipped with a coding machine to mark the serial number status to avoid test abnormalities and OK mixed boards. The sorting arm CCD recognizes abnormal serial numbers and status and automatically alarms.

[0089] Specifically, the electrical testing machine A21 and the electrical testing machine B22 are respectively connected to the AVI testing machine 70, so that the two testing machines can synchronously test the same material number or different material numbers.

[0090] (3) A31 for storing OK and NG boards after material number testing and B32 for storing OK and NG boards after material number testing:

[0091] The storage table A31 for OK and NG boards after material number testing is used to store finished circuit boards that have been tested by the electrical testing machine A21 and classified as test OK boards and test NG boards. The OK board signal is transmitted to the AVI inspection machine 70 for data switching through the material discharge sensor (signal transmission sensor 60) after unloading, while the NG board signal will not be transmitted to avoid mixing of boards.

[0092] The storage table B32 for OK and NG boards after material number testing is used to store finished circuit boards that have been tested by the electrical testing machine B22 and classified as test OK boards and test NG boards. The OK board signal is transmitted to the AVI inspection machine 70 for data switching through the discharge sensor (signal transmission sensor 60) after unloading, while the NG board signal will not be transmitted to avoid mixing of boards.

[0093] Specifically, the boards after passing through the testing machines (electrical testing machine A21 and electrical testing machine B22) are divided into test OK boards and test NG boards. The test OK boards are transmitted to the AVI inspection machine 70 through the board output conveyor. The AVI inspection machine 70 automatically switches to analyze the data based on the signal from the board output conveyor and the board machine material number.

[0094] (4) Cache segment A41 and cache segment B42:

[0095] After the test of electrical testing machine A21 is completed, it is temporarily stored in cache segment A41. After the test of electrical testing machine B22 is completed, it is temporarily stored in cache segment B42. The sensor cache board on the corresponding cache segment senses. According to the first-in-first-out principle, the first-in cache board enters AVI detection machine 70 first. This section of transportation is separate from other sections to solve the problem of detection speed difference.

[0096] Specifically, after the electrical test machine A21 and the electrical test machine B22 are tested, they are temporarily stored in this buffer conveying section, and are sensed by the sensor buffer boards on the corresponding buffer sections. According to the first-in-first-out principle, the first-in buffer boards enter the AVI detection machine 70 first.

[0097] (5)AVI detector 70:

[0098] According to the material number information transmitted by electrical test machines A21 and B22, AVI inspection is performed on the finished circuit boards that have passed the inspection by electrical test machines A21 and B22, and data is automatically retrieved from the newly created database based on the material number information transmitted by electrical test machines A21 and B22, without the need for personnel intervention.

[0099] Specifically, the board after the test by the electrical tester A21 and the electrical tester B22 is automatically switched and scanned according to the material number information transmitted before the AVI to perform appearance inspection.

[0100] (6) Material discharging lifting platform and temporary storage area 80:

[0101] The induction distinguishes the A and B material numbers. After passing through the AVI inspection machine 70, the boards with the same material number are collected by the robotic arm and temporarily stored in a pile to wait for sorting.

[0102] Specifically, the boards with the same material number after passing through the AVI inspection machine 70 are collected by the robotic arm and temporarily stored in a pile, with 50 to 100 sets of boards in each pile, and the A and B material numbers are distinguished by sensing here;

[0103] After the lifting platform piles up the boards, a temporary storage area is needed to store the boards to be sorted. Two piles can be temporarily stored before sorting according to the maximum set size of 400*500mm.

[0104] (7) Feeding section 90:

[0105] The finished circuit boards are transported from the feeding section 90 to the sorting robot 100, and the analysis results of the AVI inspection machine 70 are read by identifying the QR code or the board serial number on the board to distinguish between the A material number and the B material number.

[0106] Finished circuit boards with analysis results of 0 defects are listed as OK boards; finished circuit boards with analysis results > 0 defects are listed as NG boards.

[0107] Specifically, the robot takes a board from the feeding section 90, obtains the corresponding board information through the associated AVI inspection machine 70, and reads the analysis result of the AVI inspection machine 70 by identifying the QR code or the board serial number on the board. After the two information match, the board with an analysis result of 0 defects is an OK board, which is taken to the OK board storage area 110 by the sorting robot 100. The board with an analysis result > 0 defects is temporarily listed as an NG board and taken to the NG board storage area 120.

[0108] (8) Sorting robot 100, OK board storage area 110, NG board storage area 120, NG board inspection area 130:

[0109] Grab the finished circuit board, identify the mark set in step (2), identify the position through CCD, and place it in the corresponding storage area; the OK board storage area 110 is used to store OK boards, the NG board storage area 120 is used to store NG boards, and the NG board inspection area 130 is used to inspect and detect NG boards.

[0110] Specifically, the sorting robot 100 needs to be a 4-axis robot or a robot with a higher number of axes. The visual recognition function identifies the tray area and automatically places the finished circuit boards with defects of 0 and defects>0 according to the area.

[0111] For the OK board storage area 110 and the NG board storage area 120, only two workstations are needed for boards with the same material number, and four workstations are needed to avoid mixing different material numbers. The different material numbers (2OK and 2NG) of the electrical testing machine A21 and the electrical testing machine B22 are distinguished. When the tray of the sorted OK boards is full, it can be automatically transported to the next process by AGV.

[0112] The above-mentioned AVI one-to-two test sorting integrated automation device and method has the following advantages:

[0113] 1. A single AVI detection machine 70 obtains the result by analyzing the difference between the data graphics and the physical board graphics, with an efficiency of ≥10set / min. The test requires a test stand to analyze and test two or four lines, with an efficiency of ≥4set / min. There is waste in the AVI detection machine 70 waiting for the electrical testing machine. The waiting waste can be eliminated through matching, and the efficiency can be improved by >150%, maximizing the efficiency.

[0114] 2. Simplified process: Finished product inspection process: automatic loading → electrical testing → AVI inspection → automatic sorting; automatic loading and unloading is achieved during the process, without the need for manual handling, and no need for manual confirmation of qualified and unqualified products, thus reducing quality risks and labor costs.

[0115] 3. One operator can operate multiple machines at the same time, and automatically retrieve data through the self-built database. The operator only needs to handle process exceptions.

[0116] 4. Create a new database on the computer to realize automatic data retrieval, avoid manual retrieval, and reduce the risk of errors in retrieval of wrong data. AVI inspection machine 70 automatically retrieves data for inspection according to the identified material number, without the need for manual scheduling.

[0117] 5. The combination of electrical testing, AVI testing and automatic sorting, through marking on the circuit board surface, eliminates secondary confirmation and testing, and improves the accuracy of testing, detection and sorting.

[0118] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. An AVI one-to-two test and sorting integrated automation device, characterized in that: include: Automatic loading lifting platform A and automatic loading lifting platform B are used to automatically load the finished circuit boards to be tested; Electrical testing machine A and electrical testing machine B, electrical testing machine A is used to perform electrical testing on the material loading of automatic loading lifting platform A, and electrical testing machine B is used to perform electrical testing on the material loading of automatic loading lifting platform B; The storage table A for OK and NG boards after material number testing and the storage table B for OK and NG boards after material number testing are used to store the finished circuit boards tested by the electrical tester A, and the storage table B for OK and NG boards after material number testing is used to store the finished circuit boards tested by the electrical tester B; Buffer segment A and buffer segment B. Buffer segment A is used to buffer the finished circuit boards that have been tested for material numbers and are OK or NG and have flowed out of board storage station A. Buffer segment B is used to buffer the finished circuit boards that have been tested for material numbers and are OK or NG and have flowed out of board storage station B. The outfeed conveyor A and the outfeed conveyor B, the outfeed conveyor A is used to convey the finished circuit boards flowing out of the buffer section A, and the outfeed conveyor B is used to convey the finished circuit boards flowing out of the buffer section B; Signal transmission sensors are used to cooperate with the first-out first-in sensing and first-come first-out detection principles; AVI testing machine: a single AVI testing machine is connected to both discharge conveyor A and discharge conveyor B to achieve one-to-two AVI testing; The discharging lifting platform and temporary storage area are connected to the discharging port of the AVI inspection machine; The feeding section is connected with the discharging lifting platform and the discharging port of the temporary storage area; The sorting robot is used to automatically sort the finished circuit boards flowing out from the upstream to the OK board storage area, NG board storage area or NG board inspection area.

2. An AVI one-to-two test sorting integrated automation method, implemented by using the AVI one-to-two test sorting integrated automation device according to claim 1, characterized in that: The method comprises: (1) Automatic loading lifting platform A identifies the material number of the finished circuit board on its feeding side, and automatically transmits the material number information to the AVI inspection machine and the sorting robot, and automatically places the finished circuit board into the feeding port of the electrical testing machine A; Automatic loading lifting platform B identifies the material number of the finished circuit board on its feeding side, and automatically transmits the material number information to the AVI inspection machine and the sorting robot, and automatically places the finished circuit board into the feeding port of the electrical testing machine B; (2) Electrical test machine A is connected to the automatic loading lifting platform A of the loader, and provides the AVI detection data switching signal source. The discharging arm of electrical test machine A is equipped with a coding machine to mark the serial number status to avoid abnormal testing and OK mixing of boards. The sorting arm CCD recognizes abnormal serial numbers and status and automatically alarms; electrical test machine B is connected to the automatic loading lifting platform B of the loader, and provides the AVI detection data switching signal source. The discharging arm of electrical test machine B is equipped with a coding machine to mark the serial number status to avoid abnormal testing and OK mixing of boards. The sorting arm CCD recognizes abnormal serial numbers and status and automatically alarms; (3) After the material number test, the OK board and NG board storage table A is used to store the finished circuit boards that have been tested by the electrical test machine A and distinguished as the test OK board and the test NG board. The OK board signal is transmitted to the AVI inspection machine to switch data through the material discharge sensor after unloading, and the NG board signal is not transmitted to avoid mixing of boards; After the material number test, the OK board and NG board storage table B is used to store the finished circuit boards that have been tested by the electrical test machine B and distinguished as the test OK board and the test NG board. The OK board signal is transmitted to the AVI inspection machine to switch data through the material discharge sensor after unloading, and the NG board signal is not transmitted to avoid mixing of boards; (4) After the test of electrical tester A is completed, it is temporarily stored in cache segment A. After the test of electrical tester B is completed, it is temporarily stored in cache segment B. The sensor cache board on the corresponding cache segment senses it. According to the first-in-first-out principle, the first-in cache board has priority to enter the AVI detection machine. This section of transportation is separated from other sections to solve the problem of detection speed difference. (5) According to the material number information transmitted by electrical tester A and electrical tester B, AVI test is performed on the finished circuit boards that have passed the inspection of electrical tester A and electrical tester B, and data is automatically retrieved from the newly created database based on the material output information of the front buffer segment and identification, without human intervention; (6) The A and B material numbers are distinguished by induction. After passing through the AVI inspection machine, the boards with the same material number are collected by the robotic arm and temporarily stored in a pile to wait for sorting; (7) The finished circuit boards are transported from the feeding section to the sorting robot, and the analysis results of the AVI inspection machine are read by identifying the QR code or the serial number on the board, and the A material number and the B material number are distinguished. The finished circuit boards with an analysis result of 0 defects are listed as OK boards; the finished circuit boards with an analysis result of > 0 defects are listed as NG boards; (8) Grab the finished circuit board, identify the mark set in step (2), identify the position through CCD, and place it in the corresponding storage area; the OK board storage area is used to store OK boards, the NG board storage area is used to store NG boards, and the NG board inspection area is used to store NG boards for inspection and testing.

3. The AVI one-to-two test sorting integrated automation method according to claim 2 is characterized in that: In step (1), the boards on the tray are transferred to the test machine by visual recognition, and the loading platform transfers the data information to the test machine. When the loading platform senses the boards, it transmits a signal to the test machine to retrieve the test machine data, thereby avoiding manual intervention. The material number information of the automatic loading lift A and the automatic loading lift B is processed according to the first-come-first-test principle to realize automatic loading and unloading.

4. The AVI one-to-two test sorting integrated automation method according to claim 2 is characterized in that: In step (2), electrical test machine A and electrical test machine B are respectively connected to the AVI inspection machine, so that the two test machines can synchronously measure the same material number or different material numbers.

5. The AVI one-to-two test sorting integrated automation method according to claim 2 is characterized in that: In step (3), the boards after passing through the testing machine are divided into test OK boards and test NG boards. The test OK boards are transmitted to the AVI inspection machine through the board output conveyor. The AVI inspection machine automatically switches to analyze the data based on the signal from the board output conveyor and the board machine material number.

6. The AVI one-to-two test sorting integrated automation method according to claim 2 is characterized in that: In step (4), after the electrical test machine A and the electrical test machine B are tested, they are temporarily stored in this buffer conveying section, and are sensed by the sensor buffer board on the corresponding buffer section. According to the first-in-first-out principle, the first-in buffer board enters the AVI detection machine first.

7. The AVI one-to-two test sorting integrated automation method according to claim 2 is characterized in that: In step (5), the board after being tested by electrical test machine A and electrical test machine B is automatically switched to be scanned according to the material number information transmitted before AVI to perform appearance inspection.

8. The AVI one-to-two test sorting integrated automation method according to claim 2 is characterized in that: In step (6), the boards with the same material number after passing through the AVI inspection machine 70 are collected by a robotic arm and temporarily stored in a pile, with 50 to 100 sets of boards in each pile, and the A and B material numbers are distinguished by sensing here; After the lifting platform piles up the boards, a temporary storage area is needed to store the boards to be sorted. Two piles can be temporarily stored before sorting according to the maximum set size of 400*500mm.

9. The AVI one-to-two test sorting integrated automation method according to claim 2, characterized in that: In step (8), the robot takes the board from the feeding section, and obtains the corresponding board information through the associated AVI inspection machine, and reads the analysis result of the AVI inspection machine by identifying the QR code or the board serial number on the board. After the two information are matched, the board with an analysis result of 0 defects is an OK board, which is taken to the OK board storage area by the sorting robot. The board with an analysis result of > 0 defects is temporarily listed as an NG board and taken to the NG board storage area.

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