A modular, fully automated testing device and method for needle plates.

Abstract

A fully automated testing device and method for modular pin plates is disclosed. The testing device includes: a frame and testing equipment disposed at the lower part of the frame; a liftable pressure plate device is disposed at the upper part of the frame; a board tray slot is disposed at the upper middle part of the frame; the board tray slot is used to place the board tray; the board tray is used to place the board under test; a pin plate switching platform is disposed at the lower middle part of the frame; and a pin plate lifting platform is disposed at the lower part of the frame. Based on factors such as the testing sequence, functional category, and location distribution of the test points, the test points of the product under test are appropriately grouped, with each group corresponding to one pin plate. This transforms the original pin plate, which required approximately 100-150 pins, into two to three pin plates with a moderate number of pins (30-50 pins each). During testing, according to the testing sequence, the upper computer software intelligently controls the automatic switching of each pin plate, dynamically connecting and testing in groups until the complete testing of the board is completed.

Description

Technical Field

[0001] This invention belongs to the field of testing technology for electronic devices, specifically referring to a fully automated testing device and method with modular pinboard. Background Technology

[0002] Chinese invention patent 202010299777.8 discloses a plug-and-play intelligent testing device that requires no connecting wires. When testing circuit boards, the circuit board under test is continuously pressed against the support plate of a movable pin plate until it is fixed in place. Each test point on the circuit board is in close contact with the pins of the movable pin plate, maintaining a connected state. This testing device requires the use of a pin fixture to press the pins connected to the testing equipment against the corresponding test points of the circuit board under test, forming a movable connection for testing.

[0003] When the number of ejector pins in a punch fixture is large, the following disadvantages exist: 1. Due to the pressure exerted on the ejector pins, if there are many test points on the circuit board and the heights of these points are not uniform, the pressure on each ejector pin will be relatively high. This is especially true when some test points are at a lower height, in which case the ejector pins will bear even greater pressure. After a period of testing, the ejector pins will gradually bend due to the large force, causing them to fail to fully contact the test points on the circuit board, resulting in poor contact and test failure. When the test fails, the punch fixture needs to be disassembled and reassembled, the ejector pins checked and adjusted, and repeated adjustments made until the ejector pins make good contact with the test points, and only then can the test pass. The above problems result in a high sample retest rate and low testing efficiency; 2. After multiple adjustments, some ejector pins may be damaged, leading to the scrapping of the pin plate and requiring frequent replacement; 3. The pressure plate is pressed down by a manual lever, and different people have different pressing techniques. When pulling down quickly, the ejector pin may experience high instantaneous stress, making it prone to deformation and damage. This manual operation method not only requires a lot of manpower and has low testing efficiency, but also requires frequent replacement of testing equipment, making maintenance troublesome and costly. Summary of the Invention

[0004] One of the technical problems to be solved by the present invention is to provide a fully automated testing device with modular needle plates that improves work efficiency and reliability.

[0005] The second technical problem to be solved by this invention is to provide a fully automated testing method for modular needle plates that improves work efficiency and reliability.

[0006] This invention is implemented as follows:

[0007] A modular, fully automated testing device for needle plates includes: a frame and testing equipment disposed at the lower part of the frame.

[0008] A liftable pressure plate device is provided on the upper part of the frame;

[0009] A board tray slot is provided in the upper middle part of the frame for placing board trays; the board tray is used to place the board to be tested.

[0010] The lower part of the liftable pressure plate device is equipped with multiple columns and two power pins connected to the power supply. When the liftable pressure plate device descends, it drives the columns to press down on the board under test, and the two power pins press down on the power input test point on the surface of the board under test to supply power to the board under test.

[0011] A needle plate switching platform is provided in the lower middle part of the frame; the needle plate switching platform is provided with a pair of needle plate tracks in two or more directions; each pair of needle plate tracks includes a fixed track and a slide rail; each pair of slide rails is fixedly connected to a needle plate tray slot; each needle plate tray slot has a frame around its perimeter and a hole in the middle for placing a needle plate tray; each needle plate tray is used to place a needle plate; two or more needle plates form a complete needle plate module of the board under test;

[0012] A needle plate lifting platform is installed at the lower part of the frame;

[0013] The frame is equipped with an electric push rod module mechanism, and the testing equipment uses the electric push rod module mechanism to move the needle plate tray slot, the liftable pressure plate device, and the needle plate lifting platform.

[0014] Furthermore, the liftable pressure plate device includes: a pressure plate lifting platform and a pressure plate movably connected thereto; the plurality of columns and two power pins connected to power supply are disposed on the lower surface of the pressure plate.

[0015] Furthermore, a pressure plate slot is provided below the pressure plate lifting platform, which is used to place the pressure plate.

[0016] Furthermore, a barcode scanning module is installed on the pressure plate slot. The barcode scanning module is connected to the test equipment through a bundled flexible cable interface and is used to scan the barcode on the board under test and output it to the test equipment.

[0017] Furthermore, the testing equipment is movably connected to the test pins of two or more of the pin plates and the power pins of the liftable pressure plate device via a bundled flexible cable interface.

[0018] Furthermore, the electric actuator module mechanism includes: an electric actuator controller, at least four electric actuators, and at least four position sensors; one end of each of the at least four electric actuators is fixedly mounted on the frame, and the other end is movably connected to at least two of the needle plate tray slots, one of the pressure plate lifting platforms, and one of the needle plate lifting platforms, respectively; all at least four electric actuators are electrically connected to the electric actuator controller, which controls and drives them to perform telescopic movements; the at least four position sensors are respectively fixedly mounted on the frame and are all electrically connected to the testing equipment, used to sense the horizontal position of at least two of the needle plates in the needle plate tray slots, the height position of the liftable pressure plate device, and the height position of the needle plate lifting platform, and output the results to the testing equipment.

[0019] Furthermore, the frame has three pairs of needle plate tracks in the left, right, and rear directions in the middle section; each pair of needle plate tracks is fixedly connected to a needle plate tray slot; each needle plate tray slot is used to place a needle plate tray; each needle plate tray is used to place a needle plate; the three needle plates are referred to as the first needle plate, the second needle plate, and the third needle plate, and the three needle plates constitute a needle plate module of the board under test;

[0020] The electric actuator module mechanism includes five electric actuators and five position sensors. One end of each of the five electric actuators is fixedly mounted on the frame, and the other end is movably connected to three needle plate tray slots, one pressure plate lifting platform, and one needle plate lifting platform, respectively. All five electric actuators are electrically connected to the electric actuator controller, which controls and drives their telescopic movement. The five position sensors are fixedly mounted on the frame and electrically connected to the testing equipment. They are used to sense the horizontal position of the three needle plates in the needle plate tray slots, the height position of the pressure plate lifting platform, and the height position of the needle plate lifting platform, and output the results to the testing equipment.

[0021] A fully automated testing method for modular needle plates, the method being based on the modular fully automated testing device for needle plates as described above, and comprising the following steps:

[0022] Step S1: Place the board to be tested on the board tray;

[0023] Step S2: The testing equipment moves the needle plate tray slot, the pressure plate lifting platform, and the needle plate lifting platform through the electric push rod module mechanism to achieve intelligent control and testing in steps S3 to S12;

[0024] Step S3: Control the lifting pressure plate device to descend, so that the column below the lifting pressure plate device presses against the surface of the board under test, and the power supply pin presses against the power supply test point of the board under test, so as to supply power to the board under test.

[0025] Step S4: Control one of the needle plate tray slots to move forward, and move the needle plate tray and needle plate on the needle plate tray slot to the top of the needle plate lifting platform;

[0026] Step S5: Control the needle plate lifting platform to rise. The needle plate lifting platform passes through the middle hole of the needle plate tray slot and pushes the needle plate tray upward to make it separate from the needle plate tray slot, so that the pin of the needle plate hits the test point of the board under test, and the pin on the needle plate forms an electrical connection with the test point of the board under test.

[0027] Step S6: Perform tests related to the needle plate until completion;

[0028] Step S7: Control the needle plate lifting platform to descend. The needle plate lifting platform moves downward through the middle hole of the needle plate tray slot to the initial position. The needle plate tray falls naturally onto the needle plate tray slot under the action of gravity. The needle plate's pin disengages from the test point, and the needle plate is released.

[0029] Step S8: Control the needle plate tray slot to retract, move the needle plate out of the position above the needle plate lifting platform, and return to the standby position;

[0030] Step S9: Repeat steps S4 to S8 above to complete the testing of the remaining needle plates in sequence;

[0031] Step S10: Control the lifting pressure plate device to rise and release the board under test;

[0032] Step S11: Remove the board under test; test complete.

[0033] Step S12: Repeat steps S1 to S11 to test the next board under test.

[0034] Furthermore, it also includes: if a test error occurs during automatic testing, the current test will be stopped, and the following steps will be performed to return the equipment to its proper position:

[0035] Step E1: Control the needle plate lifting platform to descend, release the current needle plate, and let it fall freely onto the needle plate tray slot;

[0036] Step E2: Control the current needle plate to move backward, and move the current needle plate out of the position above the needle plate lifting platform, and return to the standby position;

[0037] Step E3: Control the pressure plate lifting platform to rise and release the board under test.

[0038] Step E4: Remove the board under test.

[0039] The advantages of this invention are:

[0040] 1. Significantly Improved Testing Efficiency: Existing technology uses a single pin plate to test a circuit board. The large number of pins on this plate necessitates compressing the pins' stroke to ensure proper contact with the test points, leading to over-compression and potential pin deformation, resulting in poor contact. When a test fails, the testing fixture must be disassembled and reassembled, the pins inspected and adjusted repeatedly until good contact is achieved, resulting in low production efficiency. With the modular pin plate technology of this invention, the pin plate is divided into two to three pieces, ensuring high pin contact reliability. Only one test is required, significantly improving testing efficiency.

[0041] 2. Tooling maintenance becomes simpler: Since a needle plate is divided into two to three needle plates, the number of ejector pins on each needle plate is only about one-half or one-third of the original number, which is greatly reduced. The reliability of ejector pin contact is greatly improved. The pre-pressure of the ejector pin does not need to be very large, and it is not easy to deform or be damaged. The workload of replacing ejector pins is much smaller, and tooling maintenance becomes simpler. Attached Figure Description

[0042] The present invention will now be further described with reference to the accompanying drawings and embodiments.

[0043] Figure 1 This is a schematic diagram of the overall layout of the testing device according to a specific embodiment of the present invention.

[0044] Figure 2 This is a schematic diagram of a test method flow according to a specific embodiment of the present invention.

[0045] Figure label:

[0046] 1. Frame, 2. Testing equipment, 3. Pressure plate lifting platform, 31. Pressure plate slot, 32. Pressure plate, 33. Barcode scanning module, 4. Board tray slot, 41. Board tray, 42. Board under test, 5. Needle plate switching platform, 51a. Needle plate tray slot A, 52a. Needle plate tray A, 53a. Needle plate A, 51b. Needle plate tray slot B, 52b. Needle plate tray B, 53b. Needle plate B, 51c. Needle plate tray slot C, 52c. Needle plate tray C, 53c. Needle plate C, 6. Needle plate lifting platform, 71. Electric push rod controller. Detailed Implementation

[0047] Please see Figure 1 As shown, a modular, fully automated testing device for needle plates includes: a frame 1 and testing equipment 2 disposed at the lower part of the frame.

[0048] A liftable pressure plate device is installed on the upper part of the frame 1;

[0049] A board tray slot 4 is provided in the upper middle part of the frame 1 for placing board tray 41; the board tray 41 is used to place the board 42 to be tested;

[0050] The liftable pressure plate device in this embodiment includes a pressure plate lifting platform 3 and a pressure plate 32. The pressure plate lifting platform 3 is provided with a pressure plate slot 31 for placing the pressure plate 32, which allows the pressure plate 32 to be replaced when necessary (if the pressure plate slot 31 is not designed, the pressure plate 32 can also be locked to the pressure plate lifting platform 3 with screws). The lower part of the pressure plate 32 is equipped with multiple columns and two power pins connected to the power supply. When the power pins are connected to the board under test 42, they supply power to the board under test 42. A barcode scanning module 33 is also installed on the pressure plate slot 31. The barcode scanning module 33 is connected to the test equipment 2 through a bundled flexible cable interface and is used to scan the barcode on the board under test 42 and output it to the test equipment 2. The barcode scanning module 33 automatically scans and identifies barcodes (SN, MAC) and outputs them to the test device 2. The test device 2 starts the test and outputs the barcode to the board under test 42, which records the barcode in the corresponding storage unit of the board under test 42.

[0051] In practice, if the pressure plate is designed to be non-replaceable, then in this embodiment, multiple columns and two power pins connected to the power supply are installed at the lower part of the pressure plate lifting platform 3, and the pressure plate lifting platform 3 is directly used as the pressure plate, which is also an feasible solution.

[0052] A needle plate switching platform 5 is provided in the lower middle part of the frame 1; the needle plate switching platform 5 is provided with a pair of needle plate tracks in two or more directions; each pair of needle plate tracks includes a fixed track and a slide rail; each pair of slide rails is fixedly connected to a needle plate tray slot 51a (51b); each needle plate tray slot 51a (51b) has a frame around its perimeter and a hole in the middle for placing a needle plate tray 52a (52b); each needle plate tray 52a (52b) is used to place a needle plate 53a (53b); the two needle plates A and B form a complete needle plate module of the board under test 42. The testing equipment 2 is movably connected to the test pins of the two needle plates A and B and the power pins of the pressure plate 32 through a bundled flexible cable interface, thereby realizing the connection with the board under test 42.

[0053] In a preferred embodiment, the needle plate switching platform 5 is provided with a pair of needle plate tracks in three directions. The needle plate switching platform 5 is provided with a pair of needle plate tracks in the left, right and rear directions; each pair of needle plate tracks includes a fixed track and a slide rail; each pair of slide rails is fixedly connected to a needle plate tray slot 51a (51b, 51c); each needle plate tray slot 51a (51b, 51c) has a frame around its perimeter and a hole in the middle for placing needle plate trays 52a (52b, 52c); each needle plate tray 52a (52b, 52c) is used to place needle plates 53a (53b, 53c); the three needle plates A, B and C form a complete needle plate module of the test board 42.

[0054] The following example, using three needle plate tracks, provides a further structural explanation.

[0055] When the needle plate lifting platform 6 rises, it pushes the needle plate tray 52a (52b, 52c) upward through the middle hole of the needle plate tray slot 51a (51b, 51c) to disengage it from the needle plate tray slot 51a (51b, 51c), so that the pins of the needle plate A (B, C) hit the test point of the test board 42 and form an electrical connection; when the needle plate lifting platform 6 falls, the needle plate tray 52a (52b, 52c) naturally falls back onto the needle plate tray slot 51a (51b, 51c) under the action of gravity, and the pins of the needle plate A (B, C) disengage from the test point.

[0056] The test device 2 is connected to the test pins of the three pin plates A, B, and C and the power pin of the pressure plate 32 through the bundled flexible cable interface, thereby realizing the connection with the board 42 under test.

[0057] The frame 1 is equipped with an electric push rod module mechanism, which drives the needle plate tray slots 51a, 51b, 51c, pressure plate lifting platform 3, and needle plate lifting platform 6 to move.

[0058] The electric actuator module mechanism specifically includes: an electric actuator controller 71, five electric actuators, and five position sensors (in the scheme with only two needle plate tray slots, only four electric actuators and four position sensors are needed); one end of each of the five electric actuators is fixedly mounted on the frame 1, and the other end is movably connected to three needle plate tray slots 51a, 51b, and 51c, one pressure plate lifting platform, and one needle plate lifting platform 6, respectively. All five electric actuators are electrically connected to the electric actuator controller, which controls and drives their telescopic movement. According to the above scheme, the five electric actuators are used to push the three needle plate tray slots 51a, 51b, and 51c, the pressure plate lifting platform 3, and the needle plate lifting platform 6, respectively.

[0059] Five position sensors are fixedly mounted on the frame 1 and electrically connected to the testing equipment 2. These sensors are used to sense the horizontal position of the three needle plates A, B, and C in their respective needle plate tray slots 51a, 51b, and 51c; the height position of the pressure plate lifting platform 3; and the height position of the needle plate lifting platform 6. The sensors then output the sensing information to the testing equipment 2. Each position sensor is used to sense the arrival position of a specific motion mechanism. For example, three position sensors are used to sense the horizontal position of the three needle plates A, B, and C in their respective needle plate tray slots 51a, 51b, and 51c; one position sensor is used to sense the height position of the pressure plate lifting platform 3; and one position sensor is used to sense the height position of the needle plate lifting platform 6.

[0060] During testing, test equipment 2 sends a command via network to the electric actuator controller, which in turn controls the needle plate lifting platform 6 to rise, lifting the needle plate trays 52a (52b, 52c) gradually until the pins of needle plates A (B, C) on the needle plate trays 52a (52b, 52c) press against the test points on the lower surface of the board under test 42, creating an active electrical connection. The position sensor outputs a signal to test equipment 2, stopping the rise, and needle plates A (B, C) enter the test-ready state. Test equipment 2 then performs tests on the needle module-related functions of the board under test 42 until completion. Test equipment 2 then sends a command via network to the electric actuator controller 71, which in turn controls the needle plate lifting platform 6 to descend, causing the needle plate trays 52a (52b, 52c) to detach from the needle plate lifting platform 6 and land on the needle plate tray slots 51a (51b, 51c).

[0061] This invention also provides a fully automated testing method for modular needle plates, which employs the aforementioned fully automated testing device for modular needle plates, such as... Figure 2 As shown, the specific testing method includes the following steps:

[0062] Step S1: Place the board under test 42 on the board tray 41; the barcode scanning module 33 scans the barcode on the board under test 42 and outputs it to the test device 2;

[0063] Step S2: The testing equipment uses the electric push rod module mechanism to move the needle plate tray slot 51a (51b, 51c), the pressure plate lifting platform 3, and the needle plate lifting platform 6 to achieve intelligent control and testing of steps S3~S12;

[0064] Step S3: Control the pressure plate lifting platform 3 to descend, so that the column below the pressure plate 32 presses against the surface of the board under test 42 and the power supply pin presses against the power supply test point of the board under test 42, so as to supply power to the board under test 42.

[0065] Step S4: Control the needle plate tray slot 51a to move forward, and move the needle plate tray 52a and needle plate A on the needle plate tray slot 51a above the needle plate lifting platform 6.

[0066] Step S5: Control the needle plate lifting platform 6 to rise. The needle plate lifting platform 6 passes through the middle hole of the needle plate tray slot 51a and pushes the needle plate tray 52a upward to make it disengage from the needle plate tray slot 51a, so that the pin of the needle plate A hits the test point of the board 42 under test and forms an electrical connection.

[0067] Step S6: Perform tests related to the needle plate A until completion;

[0068] Step S7: Control the needle plate lifting platform 6 to descend. The needle plate lifting platform 6 moves downward through the middle hole of the needle plate tray slot 51a to the initial position. The needle plate tray 52a falls naturally onto the needle plate tray slot 51a under the action of gravity. The pin of the needle plate A is disengaged from the test point, and the needle plate A is released.

[0069] Step S8: Control the needle plate tray slot 51a to move backward, move the needle plate A out of the position above the needle plate lifting platform 6, and return to the standby position;

[0070] Step S9: Repeat steps S4 to S8 above to complete the testing of needle plate B and needle plate C in sequence;

[0071] Step S9: Repeat steps S4 to S8 above to complete the testing of the remaining needle plates in sequence;

[0072] Step S10: Control the pressure plate lifting platform 3 to rise and release the test board 42;

[0073] Step S11: Remove the board under test 42. Test complete.

[0074] Step S12: Repeat steps S1 to S11 to test the next board under test.

[0075] If a test error occurs during the automatic testing process of test device 2, the current test will be stopped, and the following steps will be performed to return the device to its original position:

[0076] Step E1: Control the needle plate lifting platform 6 to descend, release the current needle plate, and let it fall freely onto the needle plate tray slot;

[0077] Step E2: Control the current needle plate to move backward, and move the current needle plate out of the position above the needle plate lifting platform 6, and return to the standby position;

[0078] Step E3: Control the pressure plate lifting platform 6 to rise and release the test board 42.

[0079] Step E4: Remove the board under test 42.

[0080] This invention provides a modular and automatically interchangeable intelligent tooling solution for needle plates. Based on factors such as the test sequence, functional category, and location distribution of the test points, the test points of the product under test are appropriately grouped (in this embodiment, they are divided into three groups, but in practice, there can be two or three groups). Each group corresponds to one needle plate, thereby transforming the original needle plate, which required a large number of pins (approximately 100-150 pins), into several (two or three) needle plates with a moderate number of pins (30-50 pins). During testing, according to the test sequence, the upper computer software intelligently controls and automatically switches each needle plate, dynamically connects, and groups the test until the complete test of the board is completed.

[0081] This invention significantly improves testing efficiency. The needle plate is divided into three parts, ensuring high reliability of pin contact. Only one test is needed, greatly increasing testing efficiency. Because one needle plate is divided into three, the number of pins on each plate is reduced to about one-third of the original, significantly improving pin contact reliability. The preload of the pins does not need to be large, making them less prone to deformation and damage. The workload of replacing pins is greatly reduced, and tooling maintenance becomes simpler.

[0082] The above embodiments and figures are not intended to limit the form and style of the present invention. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of the present invention.

Claims

1. A modular, fully automated testing device, comprising: The frame and the testing equipment disposed at the lower part of the frame are characterized in that: A liftable pressure plate device is provided on the upper part of the frame; A board tray slot is provided in the upper middle part of the frame for placing board trays; the board tray is used to place the board to be tested. The lower part of the liftable pressure plate device is equipped with multiple columns and two power pins connected to the power supply. When the liftable pressure plate device descends, it drives the columns to press down on the board under test, and the two power pins press down on the power input test point on the surface of the board under test to supply power to the board under test. A needle plate switching platform is provided in the lower middle part of the frame; the needle plate switching platform is provided with a pair of needle plate tracks in two or more directions; each pair of needle plate tracks includes a fixed track and a slide rail; each pair of slide rails is fixedly connected to a needle plate tray slot; each needle plate tray slot has a frame around its perimeter and a hole in the middle for placing a needle plate tray; each needle plate tray is used to place a needle plate; two or more needle plates form a complete needle plate module of the board under test; A needle plate lifting platform is installed at the lower part of the frame; The frame is equipped with an electric push rod module mechanism. The testing equipment pushes the needle plate tray slot, the liftable pressure plate device, and the needle plate lifting platform to move through the electric push rod module mechanism. The liftable pressure plate device includes a pressure plate lifting platform and a pressure plate movably connected thereto. The multiple columns and two power pins connected to the power supply are arranged on the lower surface of the pressure plate.

2. The fully automated testing device with modular pin plate as described in claim 1, characterized in that: A pressure plate slot is provided below the pressure plate lifting platform, which is used to place the pressure plate.

3. The fully automated testing device with modular needle plate as described in claim 2, characterized in that: A barcode scanning module is installed on the pressure plate slot. The barcode scanning module is connected to the test equipment through a bundled flexible cable interface and is used to scan the barcode on the board under test and output it to the test equipment.

4. The fully automated testing device with modular needle plate as described in claim 1, characterized in that: The testing equipment is movably connected to the test pins of two or more of the pin plates and the power pins of the liftable pressure plate device via a bundled flexible cable interface.

5. The fully automated testing device with modular needle plate as described in claim 1, characterized in that: The electric actuator module mechanism includes: an electric actuator controller, at least four electric actuators, and at least four position sensors; one end of each of the at least four electric actuators is fixedly mounted on the frame, and the other end is movably connected to at least two of the needle plate tray slots, one of the pressure plate lifting platforms, and one of the needle plate lifting platforms, respectively. All of the at least four electric actuators are electrically connected to the electric actuator controller, which controls and drives them to perform telescopic movements; the at least four position sensors are respectively fixedly mounted on the frame and are all electrically connected to the testing equipment, used to sense the horizontal position of at least two of the needle plates in the needle plate tray slots, the height position of the liftable pressure plate device, and the height position of the needle plate lifting platform, and output the results to the testing equipment.

6. The fully automated testing device with modular pin plate as described in claim 5, characterized in that: The frame has three pairs of needle plate tracks in the middle of the frame in the left, right and rear directions; each pair of needle plate tracks is fixedly connected to a needle plate tray slot; each needle plate tray slot is used to place the needle plate tray; each needle plate tray is used to place the needle plate; the three needle plates are called the first needle plate, the second needle plate and the third needle plate, and the three needle plates form a needle plate module of the board under test; The electric actuator module mechanism includes five electric actuators and five position sensors. One end of each of the five electric actuators is fixedly mounted on the frame, and the other end is movably connected to three needle plate tray slots, one pressure plate lifting platform, and one needle plate lifting platform, respectively. All five electric actuators are electrically connected to the electric actuator controller, which controls and drives their telescopic movement. The five position sensors are fixedly mounted on the frame and electrically connected to the testing equipment. They are used to sense the horizontal position of the three needle plates in the needle plate tray slots, the height position of the pressure plate lifting platform, and the height position of the needle plate lifting platform, and output the results to the testing equipment.

7. A fully automated testing method for modular needle plates, characterized in that: This testing method is based on a fully automated testing device with modular needle plates as described in any one of claims 1-6, and includes the following steps: Step S1: Place the board to be tested on the board tray; Step S2: The testing equipment moves the needle plate tray slot, the pressure plate lifting platform, and the needle plate lifting platform through the electric push rod module mechanism to achieve intelligent control and testing in steps S3 to S12; Step S3: Control the lifting pressure plate device to descend, so that the column below the lifting pressure plate device presses against the surface of the board under test, and the power supply pin presses against the power supply test point of the board under test, so as to supply power to the board under test. Step S4: Control one of the needle plate tray slots to move forward, and move the needle plate tray and needle plate on the needle plate tray slot to the top of the needle plate lifting platform; Step S5: Control the needle plate lifting platform to rise. The needle plate lifting platform passes through the middle hole of the needle plate tray slot and pushes the needle plate tray upward to make it separate from the needle plate tray slot, so that the pin of the needle plate hits the test point of the board under test, and the pin on the needle plate forms an electrical connection with the test point of the board under test. Step S6: Perform tests related to the needle plate until completion; Step S7: Control the needle plate lifting platform to descend. The needle plate lifting platform moves downward through the middle hole of the needle plate tray slot to the initial position. The needle plate tray falls naturally onto the needle plate tray slot under the action of gravity. The needle plate's pin disengages from the test point, and the needle plate is released. Step S8: Control the needle plate tray slot to retract, move the needle plate out of the position above the needle plate lifting platform, and return to the standby position; Step S9: Repeat steps S4 to S8 above to complete the testing of the remaining needle plates in sequence; Step S10: Control the lifting pressure plate device to rise and release the board under test; Step S11: Remove the board under test; test complete. Step S12: Repeat steps S1 to S11 to test the next board under test.

8. The fully automated testing method for a modular needle plate as described in claim 7, characterized in that: Also includes: If a test error occurs during automatic testing, the current test will be stopped, and the following steps will be performed to reset the equipment: Step E1: Control the needle plate lifting platform to descend, release the current needle plate, and let it fall freely onto the needle plate tray slot; Step E2: Control the current needle plate to move backward, and move the current needle plate out of the position above the needle plate lifting platform, and return to the standby position; Step E3: Control the pressure plate lifting platform to rise and release the board under test; Step E4: Remove the board under test.

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