A circuit board automatic testing device

Abstract

This utility model discloses an automatic circuit board testing device, including a base and a support. The support has a crossbeam and a vertical support. The crossbeam is equipped with a vertical moving mechanism that drives a detection positioning plate to move up and down. The vertical support has a guide mechanism that slides with the detection positioning plate. The detection positioning plate has several circular holes for placing detection probes or detection seats. The circular holes are arranged in a matrix and have annular grooves inside. The annular bosses on the detection probes or detection seats are interference-fitted with the annular grooves for fixation. The vertical moving mechanism can adopt a wrench drive or a bushing structure. The guide mechanism includes a guide post that fits with a through hole or a groove that fits with a boss. The device also includes a transition plate and a transition hole on the base. This device achieves automated testing through mechanical structure design, improving efficiency and accuracy, and has the advantages of strong versatility and convenient maintenance.

Description

Technical Field

[0001] This utility model relates to the field of circuit board testing technology, specifically to an automatic circuit board testing device. Background Technology

[0002] In the field of electronic equipment manufacturing, circuit board performance testing is a critical process. Currently, traditional circuit board measurement generally relies on manual operation, requiring operators to use testing instruments to perform contact measurements on each test point on the circuit board. This manual measurement method has significant drawbacks: on the one hand, the measurement efficiency is extremely low, especially for high-density circuit boards, where manual point-by-point testing is time-consuming and labor-intensive, severely restricting production efficiency; on the other hand, manual operation is greatly affected by subjective factors, easily leading to problems such as poor contact and missed test points, resulting in unstable testing accuracy. Therefore, there is an urgent need for a circuit board testing device that can achieve automated testing, has a flexible structure, and is highly efficient and accurate. Summary of the Invention

[0003] This utility model aims to provide an automatic circuit board testing device with a mechanical structure. Through mechanical structure design such as linkage mechanism transmission, guide column precise positioning, elastic detection pin contact, and adjustable tray, it realizes automated clamping test of circuit boards, solving the problems of low efficiency, insufficient positioning accuracy, and poor device versatility in the prior art. At the same time, through standardized interface layout and quick disassembly structure, it improves the convenience of test operation and equipment maintenance efficiency.

[0004] To achieve the above objectives, this utility model designs an automatic circuit board testing device, including a base and a support;

[0005] The bracket is fixed to one side of the base and includes a crossbeam and a vertical support member, wherein the vertical support member connects the crossbeam and the base.

[0006] The crossbeam provides the mounting base for the vertical moving mechanism, and the vertical support is fixed to the base to form a stable mechanical support structure, ensuring the overall rigidity of the device.

[0007] Furthermore, the base is provided with a limiting mechanism, which includes an elastic positioning pad or a positioning tray.

[0008] The limiting mechanism is used to support and position the circuit board under test. The positioning pad adopts an elastic structure design, which on the one hand allows the test points of the circuit board under test to be accurately aligned with the test pins or test seats, and on the other hand facilitates the stable placement of electronic components on the other side of the test points of the circuit board under test. Through the elastic buffering effect, the circuit board is prevented from warping or shifting due to component protrusion during the test, thereby ensuring the stability and reliability of the test process.

[0009] The crossbeam is equipped with a vertical moving mechanism that can drive the detection positioning plate to move up and down, and the vertical moving mechanism is detachably connected to the detection positioning plate.

[0010] The vertical support member is provided with a guide mechanism that slides with the detection positioning plate. The guide mechanism includes a guide member and a sliding member that slide with each other. The guide member is disposed on the vertical support member, and the sliding member is disposed on the detection positioning plate.

[0011] The guide mechanism on the vertical support slides with the detection positioning plate to ensure that the detection positioning plate only has a vertical movement path during movement, avoiding misalignment of the detection points caused by horizontal movement.

[0012] The detection positioning plate has several circular holes, and detection needles or detection seats are placed in the circular holes as needed.

[0013] The position of the circular hole shall at least satisfy the following condition: when the detection positioning plate moves downward, at least a portion of the detection pins or detection seats shall make electrical contact with all the detection points that need to be detected on the circuit board under test.

[0014] Before testing, the test point positions of the circuit board to be tested need to be traced. Then, based on the traced test point layout, test pins and / or test seats are arranged at the corresponding round hole positions on the second pressure plate.

[0015] Furthermore, the circular holes are arranged in a matrix pattern (including uniform arrangement) on the detection and positioning plate, and the center position of the holes conforms to the positioning rules of the matrix coordinate system, which facilitates rapid positioning and batch detection by automated equipment. In addition, the circular holes are provided with annular grooves, and the detection needles or detection seats are provided with annular bosses that match the annular grooves.

[0016] Before testing, the test point positions of the circuit board to be tested need to be traced. Then, based on the traced test point layout, test pins and / or test seats are arranged at the corresponding circular hole positions on the test positioning plate. The circular hole has an annular groove, and the test pin or test seat has an annular boss that matches the annular groove. The annular groove in the circular hole and the annular boss of the test pin or test seat are interference-fitted, and the axial position is fixed by using the principle of mechanical interference to avoid poor contact of the test points during testing and ensure contact stability.

[0017] Furthermore, the up-and-down moving mechanism includes an automatic moving mechanism or a manual moving mechanism. The manual moving mechanism includes a wrench and a transmission component. The wrench is rotatably connected to the crossbeam via a hinge shaft. One end of the transmission component is hinged to the wrench, and the other end is fixedly connected to the detection positioning plate. Alternatively, the manual moving mechanism includes a bushing fixed on the crossbeam and a T-shaped transmission component. The bushing is sleeved on the outside of the transmission component, and symmetrical guide grooves extending vertically are opened on both sides of the bushing. The vertical part of the transmission component has a through hole corresponding to the guide groove. The bolt passes through the guide groove and the through hole, and the diameter of the bolt head is larger than the width of the guide groove.

[0018] The up-and-down movement mechanism consisting of the wrench and the transmission component is a linkage mechanism. When operating the wrench, the crankshaft at one end of the wrench is connected to the revolute joint of the connecting rod, converting the rotational motion of the wrench into the vertical movement of the transmission component. Due to the constraint of the lower pair and the precise design of the component dimensions, this mechanism can stably realize the conversion between the rotational motion of the wrench and the vertical reciprocating motion of the transmission component. Since the other end of the transmission component is rigidly fixed to the detection positioning plate, the rotational motion of the wrench is further converted into the vertical movement of the detection positioning plate, ultimately realizing the manually controlled downward pressing action.

[0019] The guide grooves on both sides of the bushing are bolted to the through holes of the transmission component. When an external force presses down on the transmission component, the bolt slides along the guide groove, realizing elastic drive up and down movement. The diameter of the bolt head is larger than the width of the guide groove, ensuring that the transmission component can only slide along the direction of the guide groove, thus limiting its lateral displacement.

[0020] Furthermore, the automatic moving mechanism includes a control key, which controls the start and stop of the micro motor via a circuit connection. The micro motor is fixed on the crossbeam, and its output shaft is hinged to the transmission component, converting the rotational motion into the vertical linear motion of the transmission component. The connection between the micro motor and the transmission component is also equipped with a resistance sensor, which is used to monitor the pressure value when the detection probe / detection seat contacts the circuit board under test in real time. When the detected pressure value reaches a preset threshold (range of 5-20N, which can be set by a knob or software), the resistance detection module sends a signal to the control circuit, and the micro motor immediately stops running and locks in position to avoid excessive pressure that could damage the circuit board or the detection probe / detection seat.

[0021] Furthermore, the guide is a guide post fixed to one side of the vertical support, and the guide post is slidably connected to the through holes on both sides of the detection positioning plate.

[0022] The guide post is fixed to the vertical support, and the through holes on both sides of the detection positioning plate are sleeved on the outside of the guide post to form a sliding pair. The principle of cylindrical surface guidance is used to limit the lateral displacement of the detection positioning plate and ensure the vertical movement accuracy.

[0023] Furthermore, the guide is a groove provided on the vertical support, and the sliding member is a sliding boss extending from both sides of the detection positioning plate, with the sliding boss slidingly engaging with the groove.

[0024] Furthermore, the automatic circuit board testing device also includes a transition plate mounted on the detection positioning plate. The transition plate is fixedly connected to the up-down moving mechanism, and its lower side is fixedly connected to the detection positioning plate through several connecting columns. The transition plate is fixedly connected with a sliding component.

[0025] The distance between the transition plate and the detection positioning plate is no less than the height of the detection probe or detection seat. This distance is designed to provide sufficient space for the electrical connection operation between the detection probe or detection seat and the wire. As an intermediate connecting component, the transition plate is detachably connected to the detection positioning plate and the test positioning plate via a standardized interface, adaptable to test positioning plates of different specifications, thereby effectively improving the device's versatility for testing different types of circuit boards. This structural design ensures both the ease of operation for connecting the detection probe or detection seat to the wire and, through the modular adaptability of the transition plate, enables rapid replacement of test modules and system expansion, meeting diverse circuit board testing needs.

[0026] Furthermore, the guide member is slidably connected to the transition plate through through holes / sliding bosses on both sides of the transition plate.

[0027] The guiding mechanism works with the transition plate through through holes or sliding bosses on both sides, enabling the transition plate to drive the detection and positioning plate to move synchronously, thus increasing structural flexibility.

[0028] Furthermore, the base has several regularly spaced adapter holes on one side. One end of the test probe / test seat is electrically connected to the adapter hole via a wire, and the other end is electrically connected to the test point of the circuit board under test by pressing down during testing.

[0029] One end of the adapter hole is electrically connected to the detection probe / detection socket via a wire, and the other end can be connected to the corresponding testing instruments as needed.

[0030] The number of adapters is set according to the maximum number of test devices the user needs to connect, and different functional interfaces (power / signal / ground) use different shapes (round / square / hexagonal) and color markings (red / blue / black). The standardized interface design, through dual shape and color marking, enables quick identification and connection of the interfaces, avoiding mis-plugging. The rubber connectors have a certain degree of elasticity, protecting internal cables while providing a good plugging and unplugging feel. The row-and-column arrangement facilitates cable management and improves the standardization of equipment layout.

[0031] The advantages and beneficial effects of this utility model are as follows:

[0032] 1. Automated and efficient testing: By controlling the linkage between testing instruments and mechanical structures, manual point-by-point measurement is replaced, improving testing efficiency and significantly shortening the production cycle.

[0033] 2. Modular design of the detection positioning plate: The detection positioning plate adopts a modular design, which can be quickly disassembled and assembled. Its round hole matrix can adapt to the test point layout of different circuit boards. After replacement, no calibration is required to ensure the accurate alignment of the detection probe and the test point, thereby improving the device's versatility for different types of circuit boards.

[0034] 3. Improve detection accuracy: The layout of the guide posts and the row and column detection seats ensures the vertical alignment accuracy of the detection probes and / or detection seats, and the elastic contact structure ensures the reliability of electrical connections and reduces detection errors. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the automatic circuit board testing device of Example 1;

[0036] Figure 2 This is a schematic diagram of the vertical moving mechanism in Embodiment 1;

[0037] Figure 3 This is a schematic diagram of the automatic circuit board testing device in Example 2;

[0038] Figure 4 This is a partially enlarged schematic diagram of part A of Example 2;

[0039] Figure 5 This is a schematic diagram of the automatic circuit board testing device in Example 3;

[0040] Figure 6 This is a schematic diagram of the automatic circuit board testing device in Example 4;

[0041] Figure 7 This is a rear view of the automatic circuit board testing device of Embodiment 4;

[0042] In the diagram: 1. Base; 2. Bracket; 3. Limiting mechanism; 4. Transition plate; 5. Detection and positioning plate; 6. Wrench; 7. Transmission component; 8. Adapter; 9. Bushing; 10. T-type transmission component. Detailed Implementation

[0043] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model. Example 1:

[0044] like Figure 1 , Figure 2 As shown, the automatic circuit board testing device includes a base 1 and a bracket 2;

[0045] The bracket 2 is fixed to one side of the base 1 and includes a crossbeam and vertical support members fixed on both sides of the crossbeam;

[0046] The crossbeam provides the mounting base for the vertical moving mechanism, and the vertical support is fixed to the base 1 to form a stable mechanical support structure, ensuring the overall rigidity of the device.

[0047] An elastic positioning pad 3 is provided on the base 1, located directly below the detection positioning plate 5, and is used to support the circuit board under test. The positioning pad adopts an elastic structure design, which on the one hand allows the detection points of the circuit board under test to be accurately aligned with the detection probes or detection seats, and on the other hand facilitates the stable placement of electronic components on the other side of the detection points of the circuit board under test. Through the elastic buffering effect, it avoids the circuit board from warping or shifting due to component protrusion during the test, thereby ensuring the stability and reliability of the detection process.

[0048] The crossbeam is equipped with a vertical moving mechanism that can drive the detection positioning plate 5 to move up and down. The vertical moving mechanism is detachably connected to the detection positioning plate 5.

[0049] The vertical support member is provided with a guide mechanism that slides with the detection positioning plate 5. The guide mechanism includes a guide member and a sliding member that slide with each other. In this embodiment, the guide member is disposed on the vertical support member, and the sliding member is disposed on the detection positioning plate 5.

[0050] The guide mechanism on the vertical support slides with the detection positioning plate 5 to ensure that the detection positioning plate 5 only has a vertical movement path during the movement, avoiding misalignment of the detection points caused by left and right movement.

[0051] The detection positioning plate 5 has several circular holes, and detection needles or detection seats are placed in the circular holes as needed.

[0052] Before testing, the test point positions of the circuit board to be tested need to be traced. Then, based on the traced test point layout, test pins and / or test seats are arranged at the corresponding round hole positions on the second pressure plate.

[0053] Preferably, the circular holes are arranged in a matrix pattern on the detection and positioning plate 5, and an annular groove is provided inside the circular holes.

[0054] The circular holes on the detection positioning plate 5 are arranged in a matrix pattern, which facilitates the standardized installation of test probes or test sockets according to the test point layout of the circuit board.

[0055] In this embodiment, the up-and-down moving mechanism includes a wrench 6 and a transmission component 7. The wrench 6 is rotatably connected to the crossbeam via a hinge shaft. One end of the transmission component 7 is hinged to the wrench 6, and the other end is fixedly connected to the detection positioning plate 5.

[0056] When the wrench 6 moves, it drives the hinge end of the transmission component 7 to move. Since the other end of the transmission component 7 is fixed to the detection positioning plate 5, the rotational motion of the wrench 6 is converted into the vertical movement of the detection positioning plate 5. The principle is similar to lever transmission, realizing the manual control of the pressing action. Example 2:

[0057] like Figure 2 , Figure 3 As shown in this embodiment, the up-and-down moving mechanism adopts a bolt-guided structure design to realize the controllable up-and-down movement of the detection positioning plate 5, while meeting the requirements of automated testing.

[0058] The up-and-down moving mechanism includes a bushing 9 fixed on the crossbeam and a T-shaped transmission component 10. The bushing 9 is sleeved on the outside of the transmission component 7. The bushing 9 has symmetrical guide grooves extending vertically on both sides. The vertical part of the transmission component 7 has through holes that match the guide grooves. Bolts pass through the guide grooves and through holes, and the diameter of the bolt head is greater than the width of the guide groove.

[0059] The guide grooves on both sides of the bushing 9 are bolted to the through holes of the transmission component 7. When the external force presses down on the transmission component 7, the bolt slides along the guide groove, realizing the up and down movement driven by elasticity. The diameter of the bolt head is larger than the width of the guide groove, ensuring that the transmission component 7 can only slide along the direction of the guide groove, thus limiting its lateral displacement.

[0060] In this embodiment, vertical guide grooves with a length of 40mm and a width of 10mm are symmetrically opened on both sides of the bushing 9. The T-shaped transmission component 10 has a through hole that matches the guide groove at the corresponding position. An M8 bolt with a diameter of 8mm passes through the guide groove and the through hole, and the bolt head diameter is designed to be 12mm, which is larger than the width of the guide groove, thereby restricting the movement direction of the T-shaped transmission component 10 so that it can only slide up and down along the guide groove.

[0061] In this embodiment, the adapter holes adopt a standardized interface design, with their diameter and interface type fully matching common oscilloscope input terminals, supporting quick plug-and-play connections. Simultaneously, the adapter holes are arranged in a 5×5 pattern on the base 1, with a 20mm spacing between adjacent holes. Color coding distinguishes the power interface (red), signal interface (blue), and ground interface (black), effectively preventing mis-plugging during testing. The test probes are electrically connected to the adapter holes via wires. The wire's reserved length is optimized to 50mm, ensuring normal movement of the test positioning plate 5 while preventing damage to the wires due to excessive pulling. Example 3:

[0062] like Figure 4 As shown, this embodiment focuses on the innovative design of the guide mechanism and transition plate 4 and their collaborative working principle.

[0063] The guide is a guide post fixed to one side of the vertical support, and the guide post is slidably connected to the through holes on both sides of the detection positioning plate 5.

[0064] The guide post is fixed to the vertical support member, and the through holes on both sides of the detection positioning plate 5 are sleeved on the outside of the guide post to form a sliding pair. By utilizing the guiding principle of the cylindrical surface, the lateral displacement of the detection positioning plate 5 is limited, ensuring the vertical movement accuracy.

[0065] In this embodiment, the automatic circuit board testing device further includes a transition plate 4 installed on the detection positioning plate 5. One side of the transition plate 4 is fixedly connected to the up-down moving mechanism, and the other side is fixedly connected to the detection positioning plate 5.

[0066] Preferably, the guide member is slidably connected to the transition plate 4 through through holes on both sides of the transition plate 4.

[0067] In this embodiment, the transition plate 4, a key component for achieving the versatility of the device, is 10mm thick and made of FR-4 insulating board material, possessing excellent electrical insulation performance and mechanical strength. One side of the transition plate 4 is detachably connected to the test positioning plate via four M5-sized connecting posts. Specifically, the distance between the transition plate 4 and the test positioning plate 5 is precisely designed to be 30mm. This distance is greater than the height of the test probe (typically 25mm), thus providing ample space for electrical connection operations between the test probe and the wire, facilitating welding or terminal crimping by the operator.

[0068] To meet the testing requirements of circuit boards of different specifications, the transition plate 4 in this embodiment adopts a modular design concept. Different thicknesses (e.g., 15mm, 20mm) of transition plate 4 can be replaced according to actual needs to adapt to various test modules with probe heights ranging from 20-25mm. Regarding the testing process, firstly, based on the model of the circuit board under test and the testing requirements, a test positioning plate of the appropriate specification is selected and quickly installed on the transition plate 4 using positioning pins. Then, the transition plate 4 and the test positioning plate 5 are fixed together using connecting pillars to ensure that the sliding boss accurately embeds into the groove of the vertical support. Finally, the transition plate 4 and the test positioning plate 5 are driven to move synchronously through an up-and-down moving mechanism, allowing the probe to pass through the guide holes on the test positioning plate and accurately contact the test points on the circuit board, completing the testing operation. Example 4:

[0069] like Figure 5 , Figure 6 As shown, in this embodiment, the guide is a groove provided on the vertical support, the sliding member is a sliding boss extending from both sides of the detection positioning plate 5, and the sliding boss slides in conjunction with the groove.

[0070] Furthermore, the automatic circuit board testing device also includes a transition plate 4 installed on the detection positioning plate 5. One side of the transition plate 4 is fixedly connected to the up-down moving mechanism, and the other side is fixedly connected to the detection positioning plate 5.

[0071] The distance between the transition plate 4 and the detection positioning plate 5 is no less than the height of the detection probe or detection seat. This distance is designed to provide sufficient space for the electrical connection operation between the detection probe or detection seat and the wire. As an intermediate connecting component, the transition plate 4 is detachably connected to the detection positioning plate 5 and the test positioning plate via a standardized interface, adapting to test positioning plates of different specifications, thereby effectively improving the device's versatility for testing different types of circuit boards. This structural design ensures both the ease of operation for connecting the detection probe or detection seat to the wire and, through the modular adaptability of the transition plate 4, enables rapid replacement of test modules and system expansion, meeting diverse circuit board testing needs.

[0072] In this embodiment, the guiding mechanism adopts a groove-boob mating structure. Specifically, a U-shaped groove is machined on the vertical support member, with a width of 20mm and a depth of 15mm. Sliding bosses extend from both sides of the detection positioning plate 5, with a width of 18mm and a height of 14mm, forming a 0.1mm mating gap with the groove. To further reduce sliding friction resistance, a graphite lubricating coating is applied to the inner wall of the groove to ensure the smoothness and stability of the detection positioning plate 5 during vertical movement.

[0073] Preferably, the base 1 has a number of regularly spaced adapter holes on one side. One end of the detection probe / detection seat is electrically connected to the adapter hole via a wire, and the other end is electrically connected to the test point of the circuit board under test by pressing down during testing.

[0074] One end of the adapter hole is electrically connected to the detection probe / detection socket via a wire, and the other end can be connected to the corresponding testing instruments as needed.

[0075] In this embodiment, the adapters 8 are categorized into three functions: power (red circle), signal (blue square), and ground (black hexagon), arranged in a 2*11 pattern, with a 20mm spacing between adjacent adapters (to allow for cable insertion and removal). The number of each adapter is set according to user requirements; the standardized interface design uses both shape and color markings to achieve quick identification and connection, avoiding mis-insertion. The rubber adapters have a certain degree of elasticity, protecting internal cables while providing a good insertion and removal feel. The row-and-column arrangement facilitates cable management and improves the standardization of equipment layout.

[0076] Preferably, the detection needle or detection seat is provided with an annular boss that matches the annular groove in the circular hole. The annular groove in the circular hole and the annular boss of the detection needle / detection seat are interference-fitted, and the axial position is fixed by mechanical interference principle to prevent loosening during testing and ensure contact stability.

[0077] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic circuit board testing device, comprising a base and a support, characterized in that: The bracket is fixed to one side of the base and includes a crossbeam and a vertical support member, wherein the vertical support member connects the crossbeam and the base. The crossbeam is equipped with a vertical moving mechanism that can drive the detection positioning plate to move up and down, and the vertical moving mechanism is detachably connected to the detection positioning plate. The vertical support is provided with a guide mechanism that slides with the detection positioning plate. The guide mechanism includes a guide and a sliding member that slide with each other. The guide is disposed on or fixed to the vertical support, and the sliding member is disposed on the detection positioning plate. The detection positioning plate has several circular holes, and detection needles or detection seats are placed in the circular holes as needed.

2. The automatic circuit board testing device according to claim 1, characterized in that, The base is provided with a limiting mechanism, which includes an elastic positioning pad or a positioning tray.

3. The automatic circuit board testing device according to claim 1, characterized in that, The circular holes are arranged in a matrix pattern on the detection positioning plate, and an annular groove is provided inside each circular hole. The detection needle or detection seat is provided with an annular boss that matches the annular groove inside the circular hole.

4. The automatic circuit board testing device according to claim 1, characterized in that, The up-and-down moving mechanism includes an automatic moving mechanism or a manual moving mechanism. The manual moving mechanism includes a wrench and a transmission component. The wrench is rotatably connected to the crossbeam via a hinge shaft. One end of the transmission component is hinged to the wrench, and the other end is fixedly connected to the detection positioning plate. Alternatively, the manual moving mechanism includes a bushing fixed on the crossbeam and a T-shaped transmission component. The bushing is fitted on the outside of the transmission component, and symmetrical guide grooves extending vertically are opened on both sides of it. The vertical part of the transmission component has a through hole corresponding to the guide groove. The bolt passes through the guide groove and the through hole, and the diameter of the bolt head is larger than the width of the guide groove.

5. The automatic circuit board testing device according to claim 4, characterized in that, The automatic moving mechanism includes a control key, which controls the start and stop of a micro motor via a circuit connection. The micro motor is fixed on a crossbeam, and its output shaft is hinged to a transmission component. A resistance sensing component is also provided at the connection between the micro motor and the transmission component.

6. The automatic circuit board testing device according to claim 1, characterized in that, The guide component includes a guide post fixed to one side of the vertical support component, and the guide post is slidably connected to the through holes on both sides of the detection positioning plate.

7. The automatic circuit board testing device according to claim 1, characterized in that, The guide member includes a groove provided on the vertical support member, and the two ends of the sliding member are smoothly moved and engaged with the groove.

8. The automatic circuit board testing device according to claim 1, characterized in that, The automatic circuit board testing device also includes a transition plate mounted on the detection positioning plate. The transition plate is fixedly connected to the up-down moving mechanism, and its lower side is fixedly connected to the detection positioning plate through several connecting columns. The transition plate is fixedly connected with a sliding component.

9. The automatic circuit board testing device according to claim 1, characterized in that, The base has several regularly spaced adapter holes on one side. One end of the test probe / test seat is electrically connected to the adapter hole via a wire, and the other end is electrically connected to the test point of the circuit board under test by pressing down during testing.

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