Circuit board intelligent detection platform

Abstract

The utility model belongs to the technical field of circuit board detection, and particularly relates to a circuit board intelligent detection platform which comprises a conveyor, the bottom of the conveyor is connected with a base, one side of the conveyor is provided with an industrial robot, one side of the industrial robot is provided with a detection table, and the back of the industrial robot is provided with a material carrying disc. According to the utility model, the circuit board is placed on the transmission belt of the conveyor to drive the circuit board to move, when the circuit board moves to the gripper position of the industrial robot, the detected circuit board is clamped by the industrial robot and sent to the detection table, and then the connecting frame is driven by the telescopic cylinder to descend; the ejector pin and the detection probe can tightly press the test point of the circuit board, and when the circuit board is abnormal, the industrial robot clamps and places the circuit board into the material carrying disc and then resets; and when the circuit board is normal, the industrial robot clamps the circuit board and places the circuit board back to the conveyor again, and the circuit board is conveyed to the next working procedure, so that automatic detection of the circuit board can be realized more conveniently and accurately through the mode.

Description

Technical Field

[0001] This utility model belongs to the field of circuit board testing technology, specifically relating to an intelligent circuit board testing platform. Background Technology

[0002] Circuit boards, also known as printed circuit boards (PCBs), are indispensable components in modern electronic devices. Circuit boards are mainly composed of pads, vias, mounting holes, wires, components, connectors, fillers, electrical boundaries, etc. During the circuit board production process, workers need to perform inspections.

[0003] Currently, the existing circuit board testing process usually requires workers to manually inspect the circuit boards using tooling fixtures. During the inspection, the quality of the product is judged by visual inspection. However, this method of inspecting circuit boards is not only inefficient, but also the long-term monotonous and repetitive actions of workers may lead to misjudgments, thereby reducing the accuracy of circuit board inspection. Utility Model Content

[0004] The purpose of this invention is to provide an intelligent circuit board testing platform, which aims to solve the problem that in the existing circuit board testing process, workers usually need to manually inspect the circuit boards using tooling fixtures and judge the product quality by visual inspection. However, this method of testing circuit boards is not only inefficient, but also the long-term monotonous and repetitive actions of workers may lead to misjudgment, thereby reducing the accuracy of circuit board testing.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a circuit board intelligent inspection platform, including a conveyor, a base connected to the bottom of the conveyor, an industrial robot on one side of the conveyor, an inspection table on one side of the industrial robot, and a material tray on the back of the industrial robot.

[0006] The inner side of the testing platform is provided with a bottom needle carrier plate, the top of the testing platform is connected to a guide rail, one end of the guide rail is connected to a mounting bracket, the outer wall of the mounting bracket is equipped with a telescopic cylinder, the output end of the telescopic cylinder is connected to a connecting bracket, the bottom of the connecting bracket is equipped with a top needle carrier plate, the surface of the bottom needle carrier plate is perforated with a testing probe, and the lower surface of the top needle carrier plate is provided with a top needle.

[0007] As a preferred embodiment of the intelligent circuit board testing platform of this utility model, two guide rails are provided, and the two guide rails are symmetrically distributed at both ends of the connecting frame.

[0008] In a preferred embodiment of the intelligent circuit board testing platform of this utility model, the top pin is located on the upper part of the bottom pin carrier plate.

[0009] As a preferred embodiment of the intelligent circuit board testing platform of this utility model, the outer wall of the material tray is connected to two inserts, the outer walls of the two inserts are provided with slots, the base is provided with two slots on one side, the base is provided with a spring, the end of the spring is connected to a movable block, one end of the movable block is connected to a locking pin, and the outer wall of the movable block is connected to a push block.

[0010] As a preferred embodiment of the intelligent circuit board testing platform of this utility model, the dimensions between the slot and the plug are compatible.

[0011] In a preferred embodiment of the intelligent circuit board testing platform of this utility model, one end of the locking pin is inserted through the slot.

[0012] As a preferred embodiment of the intelligent circuit board testing platform of this utility model, the material tray can form an elastic engagement structure with the base through inserts, slots, springs, movable blocks, locking pins, push blocks, and slots.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] By placing the circuit board on the conveyor belt and moving it, the industrial robot picks up the circuit board and places it on the testing table when it reaches the gripper position. Then, a telescopic cylinder lowers the connecting frame, allowing the ejector pin and testing probe to press firmly against the test points on the circuit board. This connects to the control system for data acquisition. Finally, after completion, the telescopic cylinder resets the ejector pin carrier. If the circuit board is abnormal, the industrial robot will clamp it, place it on the loading tray, and then reset it. If the circuit board is normal, the industrial robot will pick it up and place it back on the conveyor for the next process. This method enables more convenient and accurate automatic circuit board testing.

[0015] By moving the movable block with the lever, the locking pin retracts, and then the insert block on the loading tray is inserted into the slot. At this time, by releasing the lever, the locking pin will pop out under the action of the spring and insert into the slot on the outer wall of the insert block, so that the loading tray can be stably placed on the back of the industrial robot. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a schematic diagram of the first main view structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the first main view disassembled and dissected surface of the present invention;

[0019] Figure 3 This is a schematic diagram of the second main view structure of this utility model;

[0020] Figure 4 This is an enlarged structural diagram of the present invention.

[0021] In the diagram: 1. Conveyor; 2. Industrial robot; 3. Inspection table; 4. Bottom pin carrier plate; 5. Guide rail; 6. Mounting bracket; 7. Telescopic cylinder; 8. Connecting bracket; 9. Ejector pin carrier plate; 10. Ejector pin; 11. Material tray; 12. Base; 13. Insert block; 14. Slot; 15. Spring; 16. Movable block; 17. Locking pin; 18. Pulling block; 19. Slot; 20. Inspection probe. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-4 The present invention provides the following technical solution: a circuit board intelligent inspection platform, including a conveyor 1, a base 12 connected to the bottom of the conveyor 1, an industrial robot 2 set on one side of the conveyor 1, an inspection table 3 set on one side of the industrial robot 2, and a material tray 11 set on the back of the industrial robot 2.

[0024] The inner side of the testing table 3 is provided with a bottom needle carrier plate 4, the top of the testing table 3 is connected to a guide rail 5, one end of the guide rail 5 is connected to a mounting bracket 6, the outer wall of the mounting bracket 6 is provided with a telescopic cylinder 7, the output end of the telescopic cylinder 7 is connected to a connecting bracket 8, the bottom of the connecting bracket 8 is provided with a top needle carrier plate 9, the surface of the bottom needle carrier plate 4 is permeated with a testing probe 20, and the lower surface of the top needle carrier plate 9 is provided with a top needle 10.

[0025] It is important to note that the industrial robot 2 has four degrees of freedom, enabling it to rotate forward and backward, move its upper arm forward and backward, raise and lower its lower arm, and open and close its gripper. Four servo motors are controlled by a microcontroller program to perform pre-inspection positioning and post-inspection sorting of abnormal circuit boards. During pre-inspection circuit board positioning, the robot's left-right direction is controlled by the microcontroller program via servo motors; the forward-backward direction is controlled by photoelectric sensors via a program to achieve precise positioning. Two photoelectric sensors are used: a circuit board arrival sensor and a front-back positioning sensor. The arrival sensor is located on the upper surface of the conveyor belt at the robot's gripper position, positioned front and back. When the circuit board arrives, it blocks the light path, thus sending an arrival signal, and the intelligent drive motor stops and waits. The front-back positioning sensor is located behind the ejector plate 9, positioned vertically. When the robotic arm of industrial robot 2 moves forward above the inspection slot while gripping the circuit board, it blocks the light path, thus sending a positioning signal. After moving a specified distance backward, it achieves precise front-back alignment with the inspection slot. Left-right alignment is achieved when the industrial robot 2 aligns with the central axis of the inspection slot.

[0026] The conveyor 1 is driven by a DC motor and driven by a synchronous belt to precisely control its operation, stopping and speed. The top of the testing table 3 is provided with a testing slot for placing circuit boards.

[0027] Preferably, there are two guide rails 5, and the two guide rails 5 are symmetrically distributed at both ends of the connecting frame 8, and the ejector pin 10 is located on the upper part of the bottom pin carrier plate 4;

[0028] It should be noted that the guide rail 5 improves stability when the telescopic cylinder 7 drives the connecting frame 8 to rise and fall.

[0029] In practical use, the circuit board is placed on the transmission belt of the conveyor 1 and moved. When the circuit board moves to the gripper position of the industrial robot 2, the industrial robot 2 picks up the circuit board to be tested and sends it to the testing table 3. Then, the telescopic cylinder 7 drives the connecting frame 8 to descend, so that the ejector pin 10 and the testing probe 20 can press firmly against the test points of the circuit board. This connects to the control system to collect data. Finally, after completion, the telescopic cylinder 7 drives the ejector pin carrier plate 9 to reset. When the circuit board to be tested is abnormal, the industrial robot 2 will clamp it and put it into the material tray 11 and then reset it. When the circuit board to be tested is normal, the industrial robot 2 will pick up the circuit board and put it back into the conveyor 1 for transport to the next process. Thus, the above method can realize automatic circuit board testing more conveniently and accurately.

[0030] It should be noted that after the circuit board test data is collected by the ejector pin 10, the main control board sends it to the computer terminal via Bluetooth. The computer's dedicated software receives, stores, counts, and displays the data, and updates the data file in real time.

[0031] Preferably, the outer wall of the material tray 11 is connected to two inserts 13, and the outer wall of the two inserts 13 is provided with slots 14. The base 12 is provided with two slots 19 on one side. The base 12 is provided with a spring 15, and the end of the spring 15 is connected to a movable block 16. One end of the movable block 16 is connected to a locking pin 17. The outer wall of the movable block 16 is connected to a lever 18. The slots 19 and the inserts 13 are matched in size. One end of the locking pin 17 is inserted through the slot 19. The material tray 11 can form an elastic engagement structure with the base 12 through the inserts 13, slots 14, springs 15, movable blocks 16, locking pins 17, levers 18, and slots 19.

[0032] In practical use, by moving the movable block 16 with the toggle 18, the locking pin 17 is retracted, and then the insert block 13 on the loading tray 11 is inserted into the slot 19. At this time, by releasing the toggle 18, the locking pin 17 will pop out under the action of the spring 15 and insert into the slot 14 on the outer wall of the insert block 13, so that the loading tray 11 can be stably placed on the back of the industrial robot 2.

[0033] Working principle: The circuit board is placed on the transmission belt of the conveyor 1 and moved. When the circuit board moves to the gripper position of the industrial robot 2, the industrial robot 2 picks up the circuit board to be tested and sends it to the test table 3. Then, the telescopic cylinder 7 drives the connecting frame 8 to descend, so that the ejector pin 10 and the test probe 20 can press tightly against the test point of the circuit board. This connects the control system to implement data acquisition. Finally, after completion, the telescopic cylinder 7 drives the ejector pin carrier plate 9 to reset. When the circuit board under test is abnormal, the industrial robot 2 will clamp it and place it in the carrier tray 11 before resetting it; when the circuit board under test is normal, the industrial robot 2 will pick up the circuit board and put it back into the conveyor 1 for transport to the next process. In this way, the automatic detection of the circuit board can be achieved more conveniently and accurately. By moving the movable block 16 with the toggle block 18, the locking pin 17 is retracted, and then the insert block 13 on the carrier tray 11 is inserted into the slot 19. At this time, by releasing the toggle block 18, the locking pin 17 will pop out under the action of the spring 15 and insert into the slot 14 on the outer wall of the insert block 13, so that the carrier tray 11 can be stably placed on the back of the industrial robot 2.

[0034] The implementation method of this solution includes the following steps:

[0035] S1. When the circuit board under test moves to the robot position with the conveyor belt, it blocks the photoelectric sensor on the transmission machine table. The system stops the transmission machine and the robot gripper turns 90 degrees to the right to the top of the testing table.

[0036] S2. The robot gripper extends forward, holding the circuit board, to block the front and rear positioning sensors under the detection frame. Then, it retracts a specified distance, positioning the circuit board directly above the detection slot. The gripper is then released, and the circuit board is placed on top of the probe within the detection slot. The probe contains a spring that can extend and retract 10 millimeters in height.

[0037] S3. The cylinder drives the upper ejector plate to descend, causing the ejector pin to press against the circuit board and move downward. As the probe spring below is compressed by about 6 mm, the probe tip presses against the test pad under the circuit board, connecting the circuit board to the main control board to perform data acquisition.

[0038] S4. After the data collection is completed, the cylinder and the ejector plate move up and reset, and the robot grabs the plate.

[0039] S5. When the circuit board is detected as normal, the robot turns 90 degrees to the left, returns the circuit board to the transmission belt, the transmission machine runs automatically, the circuit board is transferred to the next process, and the system enters the next detection cycle. When the circuit board is detected as abnormal, the robot turns 90 degrees to the right, transfers the circuit board to the material tray, and finally resets. The transmission machine runs automatically, and the system enters the next detection cycle.

[0040] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A circuit board intelligent testing platform, including a conveyor (1), characterized in that: The bottom of the conveyor (1) is connected to a base (12), an industrial robot (2) is provided on one side of the conveyor (1), a testing table (3) is provided on one side of the industrial robot (2), and a material tray (11) is provided on the back of the industrial robot (2). The inner side of the testing platform (3) is provided with a bottom needle carrier plate (4), the top of the testing platform (3) is connected to a guide rail (5), one end of the guide rail (5) is connected to a mounting bracket (6), the outer wall of the mounting bracket (6) is equipped with a telescopic cylinder (7), the output end of the telescopic cylinder (7) is connected to a connecting bracket (8), the bottom of the connecting bracket (8) is equipped with a top needle carrier plate (9), the surface of the bottom needle carrier plate (4) is permeated with a testing probe (20), and the lower surface of the top needle carrier plate (9) is provided with a top needle (10).

2. The intelligent circuit board testing platform according to claim 1, characterized in that: There are two guide rails (5), and the two guide rails (5) are symmetrically distributed at both ends of the connecting frame (8).

3. The intelligent circuit board testing platform according to claim 1, characterized in that: The ejector pin (10) is located on the upper part of the bottom pin carrier plate (4).

4. The intelligent circuit board testing platform according to claim 1, characterized in that: The outer wall of the material tray (11) is connected to two inserts (13), and the outer wall of the two inserts (13) is provided with slots (14). The base (12) has two slots (19) on one side. The base (12) is provided with a spring (15), and the end of the spring (15) is connected to a movable block (16). One end of the movable block (16) is connected to a locking pin (17), and the outer wall of the movable block (16) is connected to a lever (18).

5. The intelligent circuit board testing platform according to claim 4, characterized in that: The slot (19) and the insert (13) are sized to fit each other.

6. The intelligent circuit board testing platform according to claim 4, characterized in that: One end of the locking pin (17) passes through the inside of the slot (19).

7. The intelligent circuit board testing platform according to claim 4, characterized in that: The loading tray (11) can form an elastic engagement structure with the base (12) through the insert (13), the slot (14), the spring (15), the movable block (16), the locking pin (17), the pusher (18), and the slot (19).

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