A flying probe tester of a circuit board vertical tooling

Abstract

The application relates to the technical field of circuit board detection, in particular to a flying probe tester of a circuit board vertical tool, which comprises a detection module, a conical probe is arranged on the detection module, at least two detection modules are arranged on a movable second electric sliding table, and the conical probes are used for superimposed movement in the Y-axis direction; a first electric sliding table for mounting the second electric sliding table is horizontally arranged on a rack, a third electric sliding table for horizontally moving the conical probes is arranged on the detection module, and the conical probes are used for composite movement in the X-axis direction. The flying probe tester, which simultaneously detects the circuit board through eight conical probes, has the advantages of high detection efficiency, stable frame structure, reduced vibration generated by the movement of the detection module, high flexibility of use, support and fixation of the upright circuit board through the sharp part of the ejector pin, no coverage of the circuit, wide detection area and zoned detection of the circuit board.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of circuit board detection, and particularly relates to a flying probe tester of a circuit board vertical tool. BACKGROUND

[0002] The circuit board has the characteristics of high wiring density, light weight, thin thickness and good bending property. The flying probe tester of the circuit board is a system for testing the circuit board in a manufacturing environment, and uses probes to contact and detect the soldering points of the printed circuit board.

[0003] The prior art discloses an application with the application number CN201620971417.7 and the name of a circuit board welding system and a circuit board positioning tool. The application clamps the circuit board, fixes the circuit board in a plane, and makes one side of the circuit board upward, so that the automatic welding is accurate and does not miss welding.

[0004] The prior art also discloses an application with the application number CN201610603070.5 and the name of a circuit board tool. The application is designed for the silk screen drying process of the circuit board, and a multi-circuit tool clamp is used to fix the circuit board by using upper and lower clamping assemblies from the upper and lower angles to avoid contact between the circuit boards during processing.

[0005] However, most of the existing circuit board tools are plane tools, which cause the circuit board to be in a horizontal state after being clamped and fixed, and the circuit board is inconvenient to turn over. The traditional four-probe circuit board tester has problems in detecting the circuit board, and the clamped and fixed tool equipment covers part of the circuit of the circuit board, which causes the circuit to be unable to be detected, the detection area is reduced, and the detection efficiency is low. SUMMARY

[0006] The purpose of the present application is to provide a flying probe tester of a circuit board vertical tool to solve the problems in the prior art.

[0007] The purpose of the present application can be achieved by the following technical solutions.

[0008] A flying probe tester of a circuit board vertical tool, the flying probe tester comprises:

[0009] A detection module, a tapered probe is arranged on the detection module, and at least two detection modules are arranged on a movable second electric sliding table, and are used for superimposed movement of the tapered probe in the Y-axis direction;

[0010] A rack, a first electric sliding table for mounting the second electric sliding table is arranged horizontally on the rack, a third electric sliding table for horizontally moving the tapered probe is arranged on the detection module, and is used for compound movement of the tapered probe in the X-axis direction;

[0011] The rack is internally provided with a tool structure, the tool structure is internally provided with at least four ejector pins, the rack is composed of a marble base, a trapezoidal plate and an aluminum-magnesium alloy first top plate;

[0012] The trapezoidal plate is vertically arranged at two ends of the base and is used for connecting the parallel base and the first top plate, the base is provided with four detection frames, a detection module is arranged on the detection frame, and the detection module comprises a connecting plate and a moving block;

[0013] The first top plate is rotatably provided with a shaft rod, the shaft rod is fixedly provided with symmetrically distributed synchronous wheels, the synchronous wheels are connected with a synchronous belt, the first top plate is provided with two through grooves, and the base is provided with symmetrically distributed vertical plates;

[0014] The vertical plates are fixedly provided with rectangular plates at two ends, two connecting plates are arranged on one side of the first top plate and the base, the vertical plate is provided with the synchronous wheel on one side, the synchronous belt is connected with the synchronous wheel on one side of the vertical plate through the through groove, and the vertical plate is connected with a support plate on one side;

[0015] The vertical plate is provided with a vertical guide rail on one side, the vertical guide rail is provided with a vertically movable sliding block, the sliding block is fixedly provided with a connecting block, the connecting block is used for mounting a fixing part, and the connecting block is connected with the synchronous belt and is used for driving the sliding block to move;

[0016] The rack is internally provided with a fixing part, the fixing part comprises a top plate and a bottom plate, the fixing part is connected with the rack through the top plate and the bottom plate, the bottom plate is provided with a lower mounting plate, the lower mounting plate comprises a panel and a movable plate, a clamping groove is arranged between the movable plate and the panel, two pad plates are arranged in the clamping groove, an ejector pin mechanism is mounted in the clamping groove, one end of the lower mounting plate is provided with a limiting rod, the top plate and the bottom plate are the same in structure;

[0017] The top plate is matched with the connecting block through two end connecting grooves, the top plate and the connecting block are fixedly connected through bolts, the bottom plate is mounted on the connecting plate or the connecting block, the limiting rods are respectively attached to end portions of the support plates, and the top plate and the bottom plate are limited and fixed;

[0018] A plurality of positioning screws are mounted on one side of the panel, and the ejector pin mechanism comprises a first connecting plate and an ejector pin mounted on the first connecting plate;

[0019] A fixed plate is connected to one side of the first connecting plate, a plurality of grooves are formed in the fixed plate, the fixed plate and the clamping groove are connected through cooperation of the positioning screws and the grooves;

[0020] The first connecting plate is provided with a plurality of mounting holes, the thimbles are fixedly connected with the mounting holes on the first connecting plate through the thimbles, the thimbles on the top plate and the bottom plate are oppositely arranged, and are used for fixing the circuit board, the thimbles are sleeved with the thimbles at one end, the other end of the thimbles is provided with a needle head, a spring is arranged in the thimbles and is used for connecting one end of the thimbles, and the needle head is provided with a sharp part and is used for connecting the side edge of the vertically fixed circuit board.

[0021] The thimbles are provided with a threaded rod at one end away from the thimbles, the bottom of the mounting hole is provided with a threaded hole, and the threaded hole is matched with the threaded rod.

[0022] Further, the rack is provided with a driving structure, the driving structure comprises a first electric sliding table, a second electric sliding table and a third electric sliding table, the first electric sliding table is arranged on both sides of the connecting plate and is used for detecting the movement of the frame along the X-axis direction.

[0023] Further, the detection frame comprises a mounting bracket, the second electric sliding table is arranged on the mounting bracket and is used for connecting the driving connection bottom plate to move, so that the connection bottom plate moves along the Y-axis direction, and the third electric sliding table is arranged on the connection bottom plate and is used for connecting the driving movement block to move, so that the movement block moves along the X-axis direction.

[0024] One end of the movement block is provided with a movable detection tool holder, a first drag chain is arranged at one end of the detection tool holder, a second drag chain is connected to the movement block, a fixed block is arranged on the detection tool holder, a conical probe is connected to one end of the fixed block through a connecting tool block, a pad is fixedly connected in the conical probe and is used for tightly connecting the connecting tool block.

[0025] Further, the base is provided with symmetrically distributed fixing grooves and is used for mounting the first drag chain.

[0026] The beneficial effects of the present application are as follows:

[0027] 1. The flying probe tester adopts eight conical probes to simultaneously detect the circuits on the two surfaces of the circuit board, adopts a grid test path to move to detect the circuit board in regions, the conical probes move along the X, Y and Z axes in the regions, at least two conical probes are arranged on the third electric sliding table, the conical probes move in superposition in the Y-axis direction to precisely detect the circuit board, the detection efficiency is improved, the first electric sliding table and the third electric sliding table are arranged to control the movement of the eight conical probes along the X-axis, and the composite movement in the X-axis direction is realized.

[0028] 2. The flying probe tester controls the segmented composite movement of the conical probes along the X-axis to grid the circuit board and form a grid detection path, adopts the modular movement of the detection frame and the detection module to grid the circuit board, the detection process is stable, and the detection effect is good.

[0029] 3. The flying probe tester of this invention has a stable frame structure, which reduces vibration caused by the movement of the test module. Circuit boards of different sizes can be installed on the machine, making it highly flexible in use.

[0030] 4. The flying probe tester of this invention has a pin that is installed upright on the circuit board. The tip of the pin supports and fixes the side of the circuit board, which will not obstruct or cover the circuit, and the testing area is wide.

[0031] The invention will now be further described with reference to the accompanying drawings.

[0032] Figure 1 This is a schematic diagram of the flying probe testing machine of the present invention;

[0033] Figure 2 This is a schematic diagram of the frame structure of the present invention;

[0034] Figure 3 This is a schematic diagram of the detection frame structure of the present invention;

[0035] Figure 4 This is a schematic diagram of the frame structure of the present invention;

[0036] Figure 5 This is the present invention. Figure 4 Enlarged structural diagram at point A in the middle;

[0037] Figure 6 This is a schematic diagram of the fastener structure of the present invention;

[0038] Figure 7 This is the present invention. Figure 6 Enlarged structural diagram at point B;

[0039] Figure 8 This is a schematic diagram of the ejector mechanism of the present invention;

[0040] Figure 9 This is a schematic diagram of the cross-sectional structure of the ejector pin of the present invention. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] A flying probe tester with a vertical fixture for circuit boards, such as Figure 1 , Figure 2As shown, the flying probe tester comprises a base 1, a circuit board 2 is installed on the base 1, the circuit board 2 is vertically arranged on the base 1, detection frames 3 are arranged on both sides of the circuit board 2, two detection modules are arranged on the detection frame 3, and four detection modules are arranged on both sides of the circuit board 2.

[0043] A mounting block 51 is arranged on the first top plate 14, a shaft 5 is rotatably arranged on the mounting block 51, a first motor 52 is fixedly arranged on one side of one mounting block 51, an output end of the first motor 52 is connected with the shaft 5 through a shaft coupling, and symmetrical synchronous wheels 53 are fixedly arranged on the shaft 5.

[0044] Symmetrical fixing grooves 11 are arranged on the base 1, the two fixing grooves 11 are respectively arranged on both sides of the circuit board 2, trapezoidal plates 12 are arranged at both ends of the base 1, the trapezoidal plates 12 are vertically arranged on the base 1, motor grooves 13 are arranged on the trapezoidal plates 12 in an array, second motors are arranged in the motor grooves 13, and the second motors are not shown in the figure, and symmetrical vertical plates 17 are arranged on the base 1, the vertical plates 17 are arranged on one side of the trapezoidal plates 12 and between the two trapezoidal plates 12.

[0045] Rectangular plates 100 are fixedly arranged at both ends of the vertical plate 17, a first top plate 14 is fixedly arranged on the trapezoidal plate 12, the first top plate 14 is fixedly connected with the top of the trapezoidal plate 12 through bolts, two through grooves 15 are arranged on the first top plate 14, a connecting plate 16 is arranged on one side of the first top plate 14, the connecting plate 16 is also arranged on the base 1, the circuit board 2 is arranged between the two vertical plates 17, the synchronous wheel 53 is also arranged on one side of the vertical plate 17, and the synchronous belt 54 passes through the through groove 15 above the first top plate 14 and is connected with the synchronous wheel 53 on one side of the vertical plate 17.

[0046] The first electric sliding table 161 is arranged on both sides of the connecting plate 16, the second motor fixedly arranged in the motor groove 13 is used for controlling the first electric sliding table 161 to work, so that the detection frame 3 moves along the X-axis direction.

[0047] The support plate 6 is fixedly arranged on one side of the vertical plate 17, the vertical guide rail 18 is fixedly arranged on one side of the vertical plate 17, the sliding block 19 is slidably arranged on the vertical guide rail 18, the connecting block 10 is fixedly arranged on the sliding block 19, the connecting block 10 is arranged in the synchronous belt 54 and connected with the synchronous belt 54, the synchronous wheel 53 is rotated to drive the synchronous belt 54 to move, so that the connecting block 10 moves up and down, and the fixing part 4 is connected with one end of the connecting block 10.

[0048] As Figure 3 , Figure 4 , Figure 5As shown, the detection frame 3 includes a mounting bracket 31, the detection frame 3 is connected with the first electric sliding table 161 through two ends of the mounting bracket 31, a second electric sliding table 32 is fixedly arranged on the mounting bracket 31, a third motor 320 is arranged on the mounting bracket 31, an output end of the third motor 320 is connected with the second electric sliding table 32, the detection module includes a connecting bottom plate 30, the connecting bottom plate 30 is slidingly arranged on the second electric sliding table 32 and can move along the Y-axis direction, one end of the detection frame 3 is provided with a first drag chain 33.

[0049] The detection module further includes a moving block 34, the moving block 34 is connected with a second drag chain 35, a fourth motor 340 is arranged on the connecting bottom plate 30, an output end of the fourth motor 340 is provided with a third electric sliding table, the third electric sliding table is connected with the moving block 34, the moving block 34 is controlled to translate along the X-axis direction, one end of the moving block 34 is provided with a movable detection tool holder 36, the detection tool holder 36 is arranged with a fixed block 37, one end of the fixed block 37 is connected with a connecting tool block 38, one end of the connecting tool block 38 is arranged with a conical probe 39, the conical probe 39 is fixedly connected with a pad 381 inside, and the pad 381 is tightly connected with the connecting tool block 38.

[0050] The fourth electric sliding table is arranged on the moving block 34, which is not shown in the figure, the fourth electric sliding table is used to control the detection tool holder 36 to move towards or away from the circuit board 2, so as to realize the Z-axis movement of the conical probe 39.

[0051] As shown in Figure 6 , Figure 7 The fixed part 4 includes a top plate 41 and a bottom plate 45, one side of the top plate 41 is provided with an upper mounting plate 42, the bottom plate 45 is provided with a lower mounting plate 46, the lower mounting plate 46 is composed of a panel 461 and a movable plate 462, a clamping groove is formed between the movable plate 462 and the panel 461, two pad plates 463 are arranged in the clamping groove, and the two pad plates 463 are respectively arranged on the movable plate 462 and the panel 461, and the upper mounting plate 42 has the same structure as the lower mounting plate 46.

[0052] The movable plate 462 is provided with arrayed slot 464, the panel 461 is provided with arrayed positioning screw 465, a thimble mechanism is arranged in the clamping groove, the two ends of the top plate 41 are provided with connecting grooves 44, the connecting grooves 44 are matched with the connecting blocks 10, the connecting blocks 10 are connected and fixed through the bolts 441 arranged on one side of the top plate 41, the bottom plate 45 can be connected with the connecting plate 16 on the base 1 or can be fixedly arranged with the connecting blocks 10, one end of the upper mounting plate 42 is provided with a limiting rod 43, the limiting rods 43 on the upper mounting plate 42 and the lower mounting plate 46 are respectively attached to the two ends of the supporting plate 6, and the movement of the upper mounting plate 42 and the lower mounting plate 46 is limited.

[0053] As shown in Figure 8 ,Figure 9 As shown, the needle mechanism includes a first connecting plate 47, one side of the first connecting plate 47 is fixedly provided with a fixed plate 48, the fixed plate 48 is provided with a groove 481, the fixed plate 48 is installed in the clamping groove, and the needle mechanism is fixed by screwing in the positioning screw 465 to make the positioning screw 465 fixedly connected with the groove 481.

[0054] The first connecting plate 47 is provided with an array of mounting holes 471, the first connecting plate 47 is fixedly provided with a needle 49, and the needle sleeve 40 is installed in the mounting hole 471. The needle sleeve 40 is fixed at the bottom of the mounting hole 471 by adhesion or magnetic attraction. The needle sleeve 40 is internally provided with a spring 492 for connecting the needle 49. The needle 49 is provided with a needle head 491, and the needle head 491 is provided with a sharp portion.

[0055] The existing four-probe flying probe tester has the following detection problems: for a PCB board with complex shape, dense and irregular test points, and large distance between associated points, when high-speed testing is performed, the load in the X-axis direction is large, which leads to large inertia when starting, stopping, and reciprocating, causing obvious machine vibration and unstable testing environment. In addition, long-distance operation in the X-axis and Y-axis directions is required, which inevitably increases the auxiliary operation time in testing, resulting in low testing efficiency.

[0056] Therefore, a flying probe tester with a circuit board vertical tool is designed, which has eight conical probes 39, and has the following advantages:

[0057] 1. The test area x-axis direction is divided into several equal parts to form a grid, and high-speed precision testing is performed for each equal part.

[0058] 2. Compound motion mode is adopted in the x-axis direction to improve testing efficiency, i.e., the time displacement function of the large X-axis is X=X(x), the time displacement function of the small x-axis is x=x(z), and the time displacement function of the z-axis is z=z(t), and the motion function of the probe in the x-axis direction is:

[0059] X=X{x[z(t)]};

[0060] Thanks to the compound motion in the X-axis direction, the inertia phenomenon caused by long-distance, high acceleration / deceleration start, and instantaneous stop in the X-axis direction is reduced, making the machine vibration small and the testing environment stable and reliable.

[0061] 3. Two independent motion modules are superimposed in the y-axis motion direction, i.e.:

[0062] Let the time displacement function of y1 be y1=f(t),

[0063] Let the time displacement function of y2 be: y2=f(T),

[0064] Then the time displacement function in the y-axis direction is:

[0065] y=y1+y2=f(t)+f(T)

[0066] 3. The X-axis and Y-axis moving parts use customized modules to provide stable high walking accuracy and positioning accuracy.

[0067] 4. The natural black granite is used as the base 1 and the trapezoidal plates 12 on both sides, and the high-strength aluminum-magnesium alloy is used as the vertical plate 17, the connecting plate 16, and the first top plate 14 to form the test machine body together. The high accuracy, small change in external environment, high strength, light weight, excellent processing performance, and good electrical conductivity of the high-strength aluminum-magnesium alloy are fully utilized to lay a good foundation for the stability and anti-interference ability of the test.

[0068] 5. Compared with the traditional four-head flying probe tester:

[0069] The test efficiency is higher, the four probes are optimized to eight probes, and the test efficiency of the same type of PCB board will be doubled; the test method is broken through, the grid test path is adopted, the overall benefit is improved; the mechanical parts are designed with modularization, which is easier to realize the process standardization; the closed-loop control system is adopted to monitor the test probe in real time.

[0070] 6. Compared with the existing eight-head flying probe tester:

[0071] The superiority of the test method is more prominent, that is, the grid test path, not only the test efficiency is improved, but also the test process is more stable and efficient; the test range is wider, the unique mechanical composite motion structure can test the effective test area fully; the modularized parts are easier to standardize the process and improve the assembly efficiency of the whole machine.

[0072] 7. With a grid test path, the test area is divided into N equal parts, each part is Δn, and Δn is 10-40 mm. During the test process, the test frame 3 only needs to move in time periods, each time moving Δn, and then driving the probe to test the area at a small distance and high speed.

[0073] In this embodiment, the working principle of the flying probe tester of the circuit board vertical tooling is as follows:

[0074] Glue or magnet is arranged on the needle sleeve 40 away from the end of the ejector pin 49, and glue or magnet is arranged in the same way at the bottom of the mounting hole 471, then the needle sleeve 40 is inserted into the mounting hole 471, the installation of the ejector pin 49 is completed, then the first connecting plate 47 is installed on the clamping groove, the movable plate 462 is attached to the fixed plate 48, then the positioning screw 465 is tightened, the fixed plate 48 and the movable plate 462 are fixed, then the top plate 41 and the bottom plate 45 are installed in the rack, the ejector pins 49 on the top plate 41 and the bottom plate 45 are arranged oppositely, the top plate 41 is moved upward by adjusting the sliding block 19, the circuit board 2 is arranged and placed between the top plate 41 and the bottom plate 45, then the top plate 41 is moved downward, the ejector pins 49 on the top plate 41 are attached to the edge of the circuit board 2, until the ejector pins 49 on the top plate 41 and the bottom plate 45 are firmly fixed to the circuit board 2, the movement of the top plate 41 is stopped, and the vertical tool structure for detecting the circuit board 2 is completed.

[0075] The second motor is started again, the first electric sliding table 161 is started, the detection frame 3 is moved horizontally and fixedly by a distance Δn, the grid test path detection of the circuit board 2 is performed, the large distance span of the detection module during detection is reduced, and rack vibration is avoided.

[0076] Then the driving assembly installed on the moving block 34 is controlled, the detection knife holder 36 is moved along the Z-axis direction, the conical probe 39 is close to or away from the circuit board 2, the conical probe 39 is used to contact the surface welding point of the circuit board 2, the flying probe detection of the circuit board 2 is performed, and the moving block 34 is moved along the X-axis direction and the Y-axis direction by starting the third electric sliding table and the second electric sliding table 32, and composite motion is performed.

[0077] The third electric sliding table controls the moving block 34 to move along the X-axis direction by a distance of 1-40 mm, the welding point flying probe detection of the circuit board 2 is performed by operating the detection module, the detection efficiency is improved by small distance movement of the detection module, the detection stability is improved, the connection structure of the base 1, the trapezoidal plate 12 and the first top plate 14 is stable, the test environment is stable, the vibration of the rack is small, the circuit board 2 is vertically fixed, the influence on the surface circuit of the circuit board 2 is small, the monitoring range is wide, the precision is high, and it is suitable for detecting high-precision circuit boards.

[0078] In the description of the present specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0079] In the embodiment, the connection between the needle sleeve 40 and the mounting hole 471 can also be through a threaded fitting mode. A threaded rod 401 is arranged on the needle sleeve 40 away from the ejector pin 49. The bottom of the mounting hole 471 is provided with a threaded hole, which is not shown in the figure. The threaded hole is connected with the threaded rod 401.

[0080] The basic principles, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application.

Claims

1. A flying probe tester of a line board vertical tooling, characterized in that, The flying probe testing machine comprises: A detection module is provided with a conical probe (39), and at least two detection modules are arranged on a movable second electric sliding table (32) to realize superimposed movement of the conical probe (39) in the Y-axis direction; A first electric sliding table (161) for mounting the second electric sliding table (32) is arranged horizontally on the rack, and a third electric sliding table for horizontally moving the conical probe (39) is arranged on the detection module to realize compound movement of the conical probe (39) in the X-axis direction; A tool structure is arranged in the rack, at least four jacks (49) are arranged in the tool structure, and the rack is composed of a marble base (1), a trapezoidal plate (12), and an aluminum-magnesium alloy first top plate (14); The trapezoidal plate (12) is arranged vertically at two ends of the base (1) and is used for connecting the parallelly arranged base (1) and the first top plate (14), four detection frames (3) are arranged on the base (1), and the detection module is arranged on the detection frame (3) and comprises a connecting bottom plate (30) and a moving block (34); An axle shaft (5) is rotatably arranged on the first top plate (14), symmetrically distributed synchronous wheels (53) are fixedly arranged on the axle shaft (5), a synchronous belt (54) is connected to the synchronous wheels (53), two through grooves (15) are arranged on the first top plate (14), and symmetrically distributed vertical plates (17) are arranged on the base (1); Rectangular plates (100) are fixedly arranged at two ends of the vertical plate (17), two connecting plates (16) are arranged on one side of the first top plate (14) and the base (1), the synchronous wheels (53) are mounted on one side of the vertical plate (17), the synchronous belt (54) passes through the through grooves (15) and is connected to the synchronous wheels (53) on one side of the vertical plate (17), and the vertical plate (17) is connected with a support plate (6) on one side; A vertical guide rail (18) is arranged on one side of the vertical plate (17), a vertically movable sliding block (19) is arranged on the vertical guide rail (18), a connecting block (10) is fixedly arranged on the sliding block (19) and is used for mounting a fixing part (4), the connecting block (10) is connected with the synchronous belt (54) and is used for driving the sliding block (19) to move; The fixing part (4) comprises a top plate (41) and a bottom plate (45), the fixing part (4) is connected with the rack through the top plate (41) and the bottom plate (45), a lower mounting plate (46) is arranged on the bottom plate (45), the lower mounting plate (46) comprises a panel (461) and a movable plate (462), a clamping groove is arranged between the movable plate (462) and the panel (461), two spacers (463) are arranged in the clamping groove, a jack mechanism is arranged in the clamping groove, a limiting rod (43) is arranged at one end of the lower mounting plate (46), and the top plate (41) has the same structure as the bottom plate (45). The top plate (41) is matched with the connecting block (10) through two end connecting grooves (44), and is fixedly connected with the connecting block (10) through bolts; the bottom plate (45) is installed on the connecting plate (16) or the connecting block (10), and the limiting rods (43) are respectively attached to the ends of the supporting plates (6) and used for limiting and fixing the top plate (41) and the bottom plate (45); The panel (461) is provided with a plurality of positioning screw rods (465) on one side; the needle mechanism comprises a first connecting plate (47) and a needle (49) installed on the first connecting plate (47); The first connecting plate (47) is connected with a fixing plate (48) on one side, the fixing plate (48) is provided with a plurality of grooves (481), and the fixing plate (48) is connected with the clamping groove through cooperation of the positioning screw rod (465) and the groove (481); A plurality of mounting holes (471) are formed in the first connecting plate (47), the needle (49) is fixedly connected with the mounting hole (471) in the first connecting plate (47) through a needle sleeve (40), the needles (49) on the top plate (41) and the bottom plate (45) are oppositely arranged and used for fixing the circuit board (2), the needle sleeve (40) is sleeved on one end of the needle (49), the other end of the needle (49) is provided with a needle head (491), a spring (492) is arranged in the needle sleeve (40) and used for connecting one end of the needle (49), and the needle head (491) is provided with a sharp part and used for connecting the side edge of the vertically fixed circuit board (2); A threaded rod (401) is arranged on the end of the needle sleeve (40) away from the needle (49), a threaded hole is arranged in the bottom of the mounting hole (471), and the threaded hole is matched with the threaded rod (401).

2. The flying probe tester of claim 1, wherein, The rack is provided with a driving structure, the driving structure comprises a first electric sliding table (161), a second electric sliding table (32) and a third electric sliding table, the first electric sliding table (161) is arranged on the two sides of the connecting plate (16) and is used for detecting the movement of the detection frame (3) along the X-axis direction.

3. The flying probe tester of claim 2, wherein, The detection frame (3) comprises a mounting bracket (31), the second electric sliding table (32) is arranged on the mounting bracket (31) and is used for connecting and driving the movement of the connecting bottom plate (30) so that the connecting bottom plate (30) moves along the Y-axis direction, and the third electric sliding table is arranged on the connecting bottom plate (30) and is used for connecting and driving the movement of the moving block (34) so that the moving block (34) moves along the X-axis direction. One end of the moving block (34) is provided with a movable detection knife holder (36), the first drag chain (33) is installed at one end of the detection frame (3), the second drag chain (35) is connected to the moving block (34), the fixed block (37) is installed on the detection knife holder (36), the conical probe (39) is connected to one end of the fixed block (37) through the connecting knife block (38), and the conical probe (39) is fixedly connected with the pad (381) inside and is used for tightly connecting the connecting knife block (38).

4. The flying probe tester of claim 3, wherein the flying probe tester is configured to: determine a first position of the first probe card assembly; determine a second position of the second probe card assembly; and determine a third position of the third probe card assembly. The base (1) is provided with symmetrically distributed fixing grooves (11) and is used for installing the first drag chain (33).

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