Controller circuit board bare board automatic test equipment

Abstract

The present invention provides a controller circuit board bare board automatic testing equipment, which includes a circuit board bare board conveying mechanism, a positioning mechanism I, a positioning mechanism II, etc.; the circuit board bare board conveying mechanism is used to convey the circuit board bare board to be tested from a first position to a test station, or from a test station to a second position; the positioning mechanism I positions the circuit board bare board to be tested in the Y-axis direction, and the positioning mechanism II positions the circuit board bare board to be tested in the X-axis direction, so that the circuit board bare board to be tested is kept in a horizontal state at the test station; the circuit board bare board lifting mechanism is arranged below the test station to support the bottom of the circuit board bare board to be tested; the docking mechanism is arranged above the test station to perform docking test on the circuit board bare board to be tested. The present invention integrates code scanning recognition, controller circuit board bare board communication and analog quantity testing, and key testing, and is used for automatic testing of controller circuit board bare boards, with high detection accuracy and high work efficiency.

Description

Technical Field

[0001] The invention relates to a controller circuit board detection device, in particular to a controller circuit board bare board automatic testing device. Background Art

[0002] A generator set usually consists of an engine, a generator and a controller. The engine is used to provide power, the generator is used to convert the engine's mechanical energy into electrical energy, and the controller is the brain of the entire generator set. It not only provides engine startup, shutdown, data measurement, data display and fault protection functions, but also provides generator power measurement, display and protection functions. The generator set controller goes through three stages: relay control, PLC control and intelligent controller control. The intelligent controller integrates the microcomputer and complex peripheral circuits into one module; the bare controller circuit board is a key component of the generator set intelligent controller, so the bare controller circuit board must be tested before the generator set controller is assembled.

[0003] With the rapid development of economy and technology, mechanical automation has also achieved rapid development; however, the detection of bare boards of generator set controller circuit boards currently still mainly relies on manual detection, which has low detection accuracy, is time-consuming and labor-intensive, and has high labor input costs.

[0004] In order to solve the above problems, people have been seeking an ideal technical solution. Summary of the invention

[0005] The object of the present invention is to provide a bare board automatic testing device for a controller circuit board in view of the deficiencies in the prior art.

[0006] In order to achieve the above-mentioned purpose, the technical scheme adopted by the present invention is: a controller circuit board bare board automatic testing equipment, including a circuit board bare board conveying mechanism, a positioning mechanism I, a positioning mechanism II, a circuit board bare board lifting mechanism and a docking mechanism; the circuit board bare board conveying mechanism is used to convey the circuit board bare board to be tested from a first position to a test station, or output from the test station to a second position; wherein the first position and the second position are arranged on both sides of the circuit board bare board conveying mechanism; the positioning mechanism I is arranged on the circuit board bare board conveying mechanism, and the positioning mechanism II is arranged below the circuit board bare board conveying mechanism; the positioning mechanism I positions the circuit board bare board to be tested in the Y-axis direction, and the positioning mechanism II positions the circuit board bare board to be tested in the X-axis direction, so that the circuit board bare board to be tested is kept in a horizontal state at the test station; the circuit board bare board lifting mechanism is arranged below the test station to support the bottom of the circuit board bare board to be tested; the docking mechanism is arranged above the test station to perform docking test on the circuit board bare board to be tested;

[0007] It also includes a main controller, which controls the bare circuit board conveying mechanism, the positioning mechanism I, the positioning mechanism II, the bare circuit board lifting mechanism and the docking mechanism respectively, so as to drive the bare circuit board conveying mechanism, the positioning mechanism I, the positioning mechanism II, the bare circuit board lifting mechanism and the docking mechanism to operate respectively.

[0008] The present invention has outstanding substantive features and significant progress compared to the prior art, specifically:

[0009] 1) The present invention provides an automatic test device for bare circuit boards of controllers, which realizes the traditional manual transfer of bare circuit boards, manual contact of probes with bare circuit boards, and manual keystroke testing through an automatic test device that can operate continuously. Multiple testing processes can be automatically performed simultaneously, realizing unmanned automatic testing of bare circuit boards of controllers, with high working efficiency and maximum saving of testing time. No manual intervention is required during the testing process, which saves time and effort, and reduces the labor intensity and manpower input costs of workers.

[0010] 2) The controller circuit board bare board automatic test equipment integrates code scanning recognition, controller circuit board bare board communication and analog quantity testing, and button testing, integrating the three manual inspection steps into one step, greatly reducing the inspection time; multiple controller circuit board bare board automatic test equipment are arranged on the generator set controller production line, which improves the inspection efficiency of the circuit board bare board while ensuring the qualified rate of the generator set controller assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 and Figure 2 It is a structural schematic diagram of the present invention.

[0012] Figure 3 and Figure 4 It is a schematic diagram of the structure of the components above the test platform of the present invention.

[0013] Figure 5 and Figure 6 It is a schematic diagram of the positioning mechanism I, the positioning mechanism II and the bare circuit board lifting mechanism of the present invention.

[0014] Figure 7 It is a schematic diagram of the bare circuit board conveying mechanism of the present invention.

[0015] In the figure: 1. test platform; 2. bare circuit board conveying mechanism; 3. positioning mechanism I; 4. positioning mechanism II; 5. docking mechanism; 6. code scanning device; 7. button test device; 8. bare circuit board lifting mechanism; 9. electrical installation board; 10. PLC controller; 11. bare circuit board to be tested; 201. support rod; 202. guide track I; 203. guide track II; 204. screw rod II; 205. connecting rod I; 206. screw rod I; 207. guide rod; 208. connecting rod II; 209. belt I; 210. belt II; 401. cylinder I; 402. limit part; 501. guide column; 502. top plate; 503. docking plate II; 504. docking plate I; 505. side plate; 506. cylinder III. DETAILED DESCRIPTION

[0016] The technical solution of the present invention is further described in detail below through specific implementation methods.

[0017] Example 1

[0018] As attached Figure 1 and attached Figure 2 As shown, a controller circuit board bare board automatic testing equipment comprises a circuit board bare board conveying mechanism 2, a positioning mechanism I3, a positioning mechanism II4, a circuit board bare board lifting mechanism 8 and a docking mechanism 5;

[0019] The bare board conveying mechanism 2 for circuit boards is used to convey the bare board 11 of the circuit board to be tested from the first position to the test station, or from the test station to the second position; wherein the first position and the second position are arranged on both sides of the bare board conveying mechanism for circuit boards; the first position is the connection between the front conveying docking station and the bare board conveying mechanism 2 for circuit boards, and the second position is the connection between the bare board conveying mechanism 2 for circuit boards and the buffer area of ​​the rear docking station, the front conveying docking station is used to place the bare board of the circuit board to be tested, and the buffer area of ​​the rear docking station is used to place the bare board of the circuit board that has been tested;

[0020] The positioning mechanism I3 is arranged on the bare circuit board conveying mechanism 2, and the positioning mechanism II4 is arranged below the bare circuit board conveying mechanism 2; the positioning mechanism I3 positions the bare circuit board 11 to be tested in the Y-axis direction, and the positioning mechanism II4 positions the bare circuit board 11 to be tested in the X-axis direction, so that the bare circuit board 11 to be tested is kept in a horizontal state at the test station to prepare for the test;

[0021] The bare circuit board lifting mechanism 8 is arranged below the test station to support the bottom of the bare circuit board 11 to be tested; the docking mechanism is arranged above the test station to perform docking test on the bare circuit board to be tested; after the docking mechanism is pressed down, it contacts the test point on the bare circuit board to be tested, so as to prepare for the bare circuit board test of the bare circuit board to be tested;

[0022] The main controller controls and connects the bare circuit board conveying mechanism, the positioning mechanism I, the positioning mechanism II, the bare circuit board lifting mechanism 8 and the docking mechanism 5, respectively, so as to drive the bare circuit board conveying mechanism, the positioning mechanism I, the positioning mechanism II, the bare circuit board lifting mechanism 8 and the docking mechanism 5 to operate respectively.

[0023] In this embodiment, the test process of the controller circuit board bare board automatic test equipment is as follows:

[0024] (1) When the bare circuit board 11 to be tested reaches the first position, the main controller drives the positioning mechanism II4 to rise and performs X-axis positioning on the bare circuit board 11 to be tested; the main controller starts the bare circuit board conveying mechanism 2 to convey the bare circuit board 11 to the test station, so that the bare circuit board 11 to be tested touches the positioning mechanism II4, and then the bare circuit board conveying mechanism 2 stops running;

[0025] (2) The main controller drives the positioning mechanism I3 to perform Y-axis positioning on the bare circuit board 11 to be tested, thereby positioning the bare circuit board 11 to be tested on the test station to prevent the bare circuit board 11 to be tested from shaking during the test, thereby improving the detection accuracy and ensuring the stability of the automatic test equipment;

[0026] (3) The main controller drives the bare circuit board lifting mechanism 8 to support the bottom of the bare circuit board 11 to be tested, thereby preventing the bare circuit board 11 to be tested from being deformed due to the downward pressure of the docking mechanism 5 during the test, thereby improving the reliability of the entire automatic test equipment;

[0027] (4) The main controller drives the docking mechanism 5 to operate so that the probe group of the docking mechanism 5 contacts the test points on the bare board 11 of the circuit board to be tested, so as to prepare for the bare board communication test and analog quantity test of the circuit board to be tested;

[0028] (5) The main controller obtains the communication test parameters and analog test parameters of the bare circuit board 11 to be tested, and resets the docking mechanism, the bare circuit board lifting mechanism, the positioning mechanism I and the positioning mechanism II in sequence.

[0029] In this embodiment, the controller circuit board bare board automatic testing equipment is also provided with a three-color indicator light alarm; if the controller circuit board bare board test result is qualified, the main controller drives the circuit board bare board conveying mechanism 2 to transport the circuit board bare board to be tested from the test station to the second position for storage; if the controller circuit board bare board test result is unqualified, the main controller drives the three-color indicator light alarm to notify manual material collection.

[0030] In this embodiment, the main controller is installed on the electrical installation board 9 and is responsible for controlling the actions of various mechanisms of the test equipment; preferably, the main controller adopts a PLC controller 10. During the entire detection process, the PLC controller serves as a lower computer to realize the logical control of various mechanisms and provide support for the process control of automatic transportation of bare boards of controller circuit boards, needle seat docking, and product testing.

[0031] In this embodiment, the controller circuit board bare board automatic test equipment further includes a test equipment housing, and a test platform 1 arranged in the test equipment housing; the circuit board bare board conveying mechanism 2, the positioning mechanism I3, the positioning mechanism II4, the circuit board bare board lifting mechanism 8 and the docking mechanism 5 are arranged above the test platform 1. Among them, the test equipment housing adopts an aluminum alloy structure, and uses 8080, 8040 heavy aluminum profiles and profile connectors to connect into a frame to ensure the load-bearing property and stability of the structure.

[0032] Example 2

[0033] The difference between this embodiment and embodiment 1 is that:

[0034] As attached Figure 4 and attached Figure 7 As shown, this embodiment provides a specific implementation of a bare circuit board conveying mechanism, wherein the bare circuit board conveying mechanism 2 includes a guide track Ⅰ202 and a guide track Ⅱ203 arranged in parallel, a belt Ⅰ209 arranged on the guide track Ⅰ202, a belt Ⅱ210 arranged on the guide track Ⅱ203, and a belt driving mechanism for driving the belt Ⅰ209 and the belt Ⅱ210 to move synchronously; wherein the belt Ⅰ209 and the belt Ⅱ210 are narrow belts that move synchronously, and the belt Ⅰ209 and the belt Ⅱ210 are arranged opposite to each other to support and convey the bare circuit board 11 to be tested. The belt driving mechanism rotates to drive the belt Ⅰ209 and the belt Ⅱ210 to rotate, thereby driving the bare circuit board 11 to be tested to move along the movable guide track Ⅰ202 and the guide track Ⅱ203, thereby realizing the conveying function of the bare circuit board 11 to be tested.

[0035] In order to achieve precise control of the controller circuit board bare board conveying process, the circuit board bare board conveying mechanism is also provided with a photoelectric switch I, a photoelectric switch II and a photoelectric switch III, wherein the photoelectric switch I, the photoelectric switch II and the photoelectric switch III are electrically connected to the main controller respectively, and the main controller is electrically connected to the belt driving mechanism through a relay; wherein the photoelectric switch I is used to detect whether the bare circuit board to be tested is located at the first position, the photoelectric switch II is used to detect whether the bare circuit board to be tested is located at the test station, and the photoelectric switch III is used to detect whether the bare circuit board to be tested is located at the second position.

[0036] Before the test, the bare board of the circuit board to be tested is placed in the first position, that is, the connection between the front conveying docking station and the bare board conveying mechanism 2 of the circuit board. At this time, the photoelectric switch I feeds back the sensing signal to the main controller, and the main controller controls the relay to close after receiving the sensing signal to start the belt drive mechanism. After the bare board of the circuit board to be tested arrives at the test station, the photoelectric switch II feeds back the sensing signal to the main controller, and the main controller controls the relay to disconnect after receiving the sensing signal to shut down the belt drive mechanism, so that the bare board of the circuit board to be tested stays on the test station to prepare for the test work; after the test is completed, the main controller controls the relay to close to start the belt drive mechanism again and transport the bare board of the circuit board to be tested from the test station to the second position. At this time, the photoelectric switch III feeds back the sensing signal to the main controller, and the main controller controls the relay to disconnect after receiving the sensing signal to shut down the belt drive mechanism.

[0037] Preferably, the belt drive mechanism adopts a servo motor.

[0038] Example 3

[0039] The difference between this embodiment and the above embodiment is that:

[0040] As attached Figure 5 and attached Figure 6As shown, the bare board conveying mechanism 2 of the circuit board is also provided with a width adjustment component, which includes a screw rod Ⅰ206, a screw rod Ⅱ204 and a guide rod 207 arranged in parallel, a sprocket transmission assembly connected to the screw rod Ⅰ206 and the screw rod Ⅱ204, and a hand wheel connected to the sprocket transmission assembly; the screw rod Ⅰ206 and the screw rod Ⅱ204 are respectively threadedly connected to the guide rail Ⅱ203, so that when the screw rod Ⅰ206 and the screw rod Ⅱ204 rotate, the guide rail Ⅱ203 moves linearly along the guide rod 207. Among them, the sprocket transmission assembly includes a sprocket Ⅰ arranged on the screw rod Ⅰ206, a sprocket Ⅱ arranged on the screw rod Ⅱ204, and a roller chain connected between the sprocket Ⅰ and the sprocket Ⅱ, and the hand wheel is arranged on the sprocket Ⅰ or the sprocket Ⅱ, and the user manually adjusts the width between the guide rail Ⅰ202 and the guide rail Ⅱ203 through the hand wheel.

[0041] In this embodiment, the bare circuit board conveying mechanism 2 also includes a support frame, which includes two support rods 201 arranged in parallel on the test platform 1, and a connecting rod Ⅰ205 and a connecting rod Ⅱ208 arranged vertically between the two support rods 201; wherein, the connecting rod Ⅰ205 is arranged in parallel above the screw rod Ⅱ204, and the connecting rod Ⅱ208 is arranged in parallel above the screw rod Ⅰ206.

[0042] When the width between the guide rail I 202 and the guide rail II 203 needs to be adjusted, the user manually turns the hand wheel to drive one of the sprockets to rotate, and then drives the other sprocket to rotate, thereby driving the screw rod I 206 and the screw rod II 204 to rotate synchronously, so that the widths of the two ends of the guide rail I 202 and the guide rail II 203 are the same; the screw rod I 206 and the screw rod II 204 rotate, thereby driving the guide rail II 203 to move along the guide rod 207, to achieve width adjustment between the guide rail I 202 and the guide rail II 203, to adapt to circuit board bare boards of different widths, so that it can test circuit board bare boards of different widths, thereby expanding the scope of use of the controller circuit board bare board automatic testing equipment.

[0043] Example 4

[0044] The difference between this embodiment and the above embodiment is that:

[0045] This embodiment provides a specific implementation of the positioning mechanism I3, as shown in the attached Figure 3As shown, the positioning mechanism I3 is arranged on the guide rail II203 and can move left and right with the guide rail II203; preferably, the positioning mechanism I3 adopts a cylinder, and the cylinder is connected to the main controller through a solenoid valve. When positioning is required, the main controller controls the solenoid valve to be turned on, drives the telescopic end of the positioning mechanism I3 to extend, and fixes the bare board 11 of the circuit board to be tested between the guide rail I202 and the guide rail II203, so as to position the bare board 11 of the circuit board to be tested at the left and right boundaries, prevent the bare board 11 of the circuit board to be tested from moving left and right during the test to affect the test results, and realize the Y-axis positioning function of the bare board of the circuit board to be tested.

[0046] This embodiment also provides a specific implementation of the positioning mechanism II4, as shown in the attached Figure 6 As shown, the positioning mechanism II4 includes a cylinder I401 and a limiter 402 located on one side of the test station; the limiter 402 is arranged at the telescopic end of the cylinder I401 to limit the conveying direction of the bare circuit board to be tested. The cylinder I401 is connected to the main controller through the solenoid valve I. Before the bare circuit board to be tested arrives at the test station, the main controller controls the solenoid valve I to be turned on, driving the telescopic end of the cylinder I401 to extend, preventing the bare circuit board 11 to be tested from continuing to move forward after arriving at the test station, thereby realizing the X-axis positioning function of the bare circuit board 11 to be tested.

[0047] This embodiment also provides a specific implementation of the bare circuit board lifting mechanism, as shown in the attached Figure 6 As shown, the bare circuit board lifting mechanism 8 includes a cylinder II and a lifting part arranged directly below the test station; the lifting part is arranged at the telescopic end of the cylinder II, and is used to support the bare circuit board to be tested after the bare circuit board to be tested moves to the test station. Among them, the cylinder II is connected to the main controller through the electromagnetic valve II. The cylinder II is arranged in parallel with the cylinder I 401; after the bare circuit board to be tested is positioned, the main controller controls the electromagnetic valve II to be turned on, and drives the telescopic end of the cylinder II to extend, so that the lifting part contacts the bottom of the bare circuit board to be tested and forms a support, so as to prevent the bare circuit board 11 to be tested from being deformed due to the downward pressure of the docking mechanism 5.

[0048] In this embodiment, a bump is provided on the lifting portion, and the bump is adapted to the bottom of the bare circuit board to be tested, so that the lifting portion is in close contact with the bottom of the bare circuit board to be tested, further improving the stability of the entire test equipment.

[0049] Example 5

[0050] The difference between this embodiment and the above embodiment is that:

[0051] As attached Figure 4 and attached Figure 5As shown, this embodiment provides a specific implementation of the docking mechanism, the docking mechanism 5 includes a guide column 501, a top plate 502, a docking assembly and a cylinder III 506; the guide column 501 is arranged around the bare board conveying mechanism 2 for the circuit board, the top plate 502 is fixed on the top of the guide column 501, and the cylinder III 506 is arranged on the top plate 502; the docking assembly is arranged at the telescopic end of the cylinder III 506, and the docking assembly can move up and down along the guide column 501 to ensure the docking accuracy; a probe group is arranged on the docking assembly, and the probe group is adapted to the test point of the bare board of the circuit board to be tested.

[0052] In this embodiment, the cylinder III 506 is connected to the main controller through the solenoid valve III. During the test, the main controller controls the solenoid valve III to be turned on, drives the telescopic end of the cylinder III 506 to extend, and causes the docking assembly to descend, so that the probe group contacts the test points on the bare board 11 of the circuit board to be tested, so as to send a test signal to the bare board of the circuit board to be tested, and collect the feedback signal of the bare board of the circuit board to be tested, so as to perform communication test and analog quantity test on the bare board of the circuit board to be tested. Among them, the probe group includes a plurality of probes, and the number and setting position of the probes are consistent with the number and position arrangement of the test points on the bare board 11 of the circuit board to be tested.

[0053] In this embodiment, the docking assembly includes a docking plate I 504, a docking plate II 503 and a side plate 505; the docking plate I 504 is fixedly mounted on the telescopic end of the cylinder III 506, and the docking plate II 503 is slidably mounted on the guide column 501, and a rectangular hole is provided in the center; during testing, the telescopic end of the cylinder III 506 extends out to drive the docking plate II 503 to descend, so that the probe group contacts the test point of the bare board of the circuit board to be tested; two side plates 505 are arranged in parallel between the docking plate I 504 and the docking plate II 503, so as to reserve space for the arrangement of the probe group or other devices.

[0054] In this embodiment, a code scanning device 6 is further provided on the docking assembly; the code scanning device 6 is electrically connected to the main controller to collect identification information on the bare circuit board 11 to be tested. During the test, the code scanning device 6 scans the QR code or barcode information on the bare circuit board 11 to be tested and feeds it back to the main controller; the main controller identifies the product model and other information of the bare circuit board 11 to be tested and stores it.

[0055] In this embodiment, a button test device 7 is also provided on the docking assembly, and the button test device 7 includes a cylinder IV and a pressing part provided at the telescopic end of the cylinder IV, and the pressing part is used to press the button on the bare board of the circuit board to be tested. The cylinder IV is connected to the main controller through the electromagnetic valve IV. During the test, the main controller controls the electromagnetic valve III to be turned on, drives the pressing part to press the button on the bare board of the circuit board to be tested, and simulates the action of manually pressing the button. The main controller collects the button status of the bare board of the circuit board to be tested to detect whether the button function on the bare board of the circuit board to be tested is qualified.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention, which should be included in the scope of the technical solution for protection of the present invention.

Claims

1. A controller circuit board bare board automatic test equipment, characterized by: It includes a bare circuit board conveying mechanism, a positioning mechanism I, a positioning mechanism II, a bare circuit board lifting mechanism and a docking mechanism; The bare circuit board conveying mechanism is used to convey the bare circuit board to be tested from the first position to the test station, or output from the test station to the second position; the bare circuit board conveying mechanism comprises a guide track I and a guide track II arranged in parallel, a belt I arranged on the guide track I, a belt II arranged on the guide track II, and a belt driving mechanism for driving the belt I and the belt II to move synchronously; wherein the belt I and the belt II are arranged opposite to each other to support and convey the bare circuit board to be tested, and the first position and the second position are arranged on both sides of the bare circuit board conveying mechanism; The positioning mechanism I is arranged on the bare circuit board conveying mechanism, and the positioning mechanism II is arranged below the bare circuit board conveying mechanism; the positioning mechanism I positions the bare circuit board to be tested in the Y-axis direction, and the positioning mechanism II positions the bare circuit board to be tested in the X-axis direction, so that the bare circuit board to be tested is kept in a horizontal state at the test station; The bare circuit board lifting mechanism is arranged below the test station to support the bottom of the bare circuit board to be tested; The docking mechanism is arranged above the test station and is used to perform a docking test on the bare circuit board to be tested; It also includes a main controller, which controls the bare board conveying mechanism, the positioning mechanism I, the positioning mechanism II, the bare board lifting mechanism and the docking mechanism respectively, and is used to drive the bare board conveying mechanism, the positioning mechanism I, the positioning mechanism II, the bare board lifting mechanism and the docking mechanism to act respectively; The test process of the controller circuit board bare board automatic test equipment is: (1) When the bare circuit board to be tested reaches the first position, the main controller drives the positioning mechanism II to rise and performs X-axis positioning on the bare circuit board to be tested; the main controller starts the bare circuit board conveying mechanism to convey the bare circuit board to be tested to the test station, so that the bare circuit board to be tested touches the positioning mechanism II, and then the bare circuit board conveying mechanism stops running; (2) The main controller drives the positioning mechanism I to perform Y-axis positioning on the bare circuit board to be tested, thereby positioning the bare circuit board to be tested on the test station to prevent the bare circuit board to be tested from shaking during the test; (3) The main controller drives the bare circuit board lifting mechanism to support the bottom of the bare circuit board to be tested, thereby preventing the bare circuit board to be tested from being deformed due to downward pressure of the docking mechanism during the test; (4) The main controller drives the docking mechanism to move so that the probe group of the docking mechanism contacts the test points on the bare board of the circuit board to be tested, so as to prepare for the bare board communication test and analog quantity test of the circuit board to be tested; (5) The main controller obtains the communication test parameters and analog test parameters of the bare circuit board to be tested, and resets the docking mechanism, the bare circuit board lifting mechanism, the positioning mechanism and the positioning mechanism in sequence.

2. The controller circuit board bare board automatic test equipment according to claim 1, characterized in that: The bare circuit board conveying mechanism is also provided with a photoelectric switch I, a photoelectric switch II and a photoelectric switch III, wherein the photoelectric switch I, the photoelectric switch II and the photoelectric switch III are electrically connected to the main controller respectively, and the main controller is electrically connected to the belt driving mechanism; Among them, the photoelectric switch I is used to detect whether the bare circuit board to be tested is located at the first position, the photoelectric switch II is used to detect whether the bare circuit board to be tested is located at the test station, and the photoelectric switch III is used to detect whether the bare circuit board to be tested is located at the second position.

3. The controller circuit board bare board automatic test equipment according to claim 1, characterized in that: The bare board conveying mechanism for the circuit board is also provided with a width adjustment component, which includes a screw rod I, a screw rod II and a guide rod arranged in parallel, a sprocket transmission assembly connected to the screw rod I and the screw rod II, and a handwheel connected to the sprocket transmission assembly; the screw rod I and the screw rod II are respectively threadedly connected to the guide rail II, so that the guide rail II moves linearly along the guide rod when the screw rod I and the screw rod II rotate.

4. The controller circuit board bare board automatic test equipment according to claim 1, characterized in that: The positioning mechanism II includes a cylinder I and a limiting portion located at one side of the test station; the limiting portion is arranged at the telescopic end of the cylinder I to limit the conveying direction of the bare circuit board to be tested.

5. The controller circuit board bare board automatic test equipment according to claim 1, characterized in that: The bare circuit board lifting mechanism includes a cylinder II and a lifting part arranged directly below the test station; the lifting part is arranged at the telescopic end of the cylinder II, and is used to support the bare circuit board to be tested after the bare circuit board to be tested moves to the test station.

6. The controller circuit board bare board automatic test equipment according to claim 1, characterized in that: The docking mechanism comprises a guide column, a top plate, a docking assembly and a cylinder III; the guide column is arranged around the bare circuit board conveying mechanism, the top plate is fixed on the top of the guide column, and the cylinder III is arranged on the top plate; the docking assembly is arranged at the telescopic end of the cylinder III, and the docking assembly can move up and down along the guide column; A probe group is arranged on the docking assembly, and the probe group is arranged to match the test points of the bare board of the circuit board to be tested.

7. The controller circuit board bare board automatic test equipment according to claim 6, characterized in that: The docking assembly includes a docking plate I, a docking plate II and a side plate; the docking plate I is fixedly arranged at the telescopic end of the cylinder III; the docking plate II is slidably arranged on the guide column and a rectangular hole is provided in the center; two side plates are arranged in parallel between the docking plate I and the docking plate II.

8. The controller circuit board bare board automatic test equipment according to claim 6, characterized in that: A code scanning device is also provided on the docking assembly; the code scanning device is electrically connected to the main controller and is used to collect identification information on the bare board of the circuit board to be tested.

9. The controller circuit board bare board automatic test equipment according to claim 6, characterized in that: A button test device is also provided on the docking assembly, and the button test device comprises a cylinder IV and a pressing part provided at the telescopic end of the cylinder IV, and the pressing part is used for pressing the button on the bare board of the circuit board to be tested.

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