An adaptive flying probe test device and test method for PCB soft board

Abstract

The present invention relates to the technical field of flying probe testing of circuit boards, and in particular to an adaptive flying probe testing device for PCB soft boards and a testing method thereof. The device comprises a base, and a limit test mechanism is provided on the top of the base. The present invention controls two groups of translation plates to adjust the spacing according to the width of the PCB soft board, and then controls two groups of transmission blocks to translate synchronously in relative or opposite directions according to the port spacing of the PCB soft board, and then under the hinged relationship of several groups of connecting rods, several groups of adjustment columns and two groups of transmission blocks, several groups of adjustment columns can drive several groups of telescopic probes to adjust at equal distances, thereby achieving the effect of multi-channel simultaneous testing of the PCB soft board, and can automatically adapt and adjust according to the different port spacings of different PCB soft boards, which not only improves the test efficiency of the test device, but also improves the test compatibility of the test device.

Description

Technical Field

[0001] The invention belongs to the technical field of flying probe testing of circuit boards, and in particular relates to an adaptive flying probe testing device for a PCB soft board and a testing method thereof. Background Art

[0002] Flying probe test of circuit board refers to the test of the circuit in the PCB board, which is mainly to check whether the circuit is well conductive and whether there are problems such as short circuit, open circuit, poor contact, etc.

[0003] After searching, in the prior art, Chinese patent announcement number: CN116774015B, announcement date: 2023-10-17, discloses a circuit board flying probe test equipment, including a cabinet and a second linear guide rail, a mounting frame is installed at the top front end of the cabinet, and two first screw rods are symmetrically installed at the two ends of the interior of the mounting frame; in this invention, the position of the adjustment frame can be quickly adjusted by rotating the second screw rod, and can be pre-adjusted according to the size of the PCB board to be tested. Two sliders that can be automatically adjusted are provided at both ends of the adjustment frame. The third adjustment motor drives the driving wheel to rotate, which can simultaneously drive the two engaging rods to rotate in relative directions, thereby driving the two sliders to move synchronously, and further driving the two clamps to clamp the two ends of the PCB board for positioning the PCB board to adapt to PCB boards of different widths, thereby improving the speed and position accuracy during manual board installation.

[0004] However, the test equipment still has the following defects:

[0005] Existing flying probe test equipment for circuit boards usually adopts a double flying probe test structure, but it needs to test different paths of the circuit board for many times, so it lacks test efficiency. Summary of the invention

[0006] In view of the above problems, the present invention provides an adaptive flying probe test device for a PCB soft board, comprising a base, and a limit test mechanism is provided on the top of the base;

[0007] The limit test mechanism comprises a bottom plate; two groups of lifting columns are symmetrically arranged at the edges of both sides of the top of the bottom plate; a lifting plate is arranged between the two groups of lifting columns; and a guide block is arranged on the outer wall of the lifting plate;

[0008] A multi-flying probe test assembly is provided at the bottom of the guide block; a control assembly is provided at the top of the base plate; two sets of self-adjusting limit assemblies are symmetrically provided on the output end of the control assembly;

[0009] Control two sets of self-adjusting limit assemblies to clamp the two ends of the PCB soft board and keep it in tension, then control the multi-flying probe test assembly to scan the size and port spacing of the PCB soft board and make adaptive adjustments, and finally control the multi-flying probe test assembly to perform multi-channel synchronous testing on the PCB soft board.

[0010] Furthermore, a group of support columns are respectively provided at the top corners of the base; a top plate is provided on the top of the four groups of support columns; a filter fan is provided on the top of the top plate; a lifting jet frame is provided between the four groups of support columns; and a gas channel is provided in the lifting jet frame.

[0011] Furthermore, the gas channel is movably connected to the output end of the filter fan; a plurality of groups of jet holes are evenly spaced at the bottom of the gas channel; a group of storage grooves are respectively provided at the bottom edge of the top plate; a group of folding dustproof plates are provided in each group of the storage grooves; and the bottom of each group of the folding dustproof plates is connected to the top of the lifting jet frame.

[0012] Furthermore, the multi-flying probe test assembly includes a first shell; two groups of translation slots are symmetrically opened at the bottom of the first shell; a group of translation plates are slidably connected in each group of the translation slots; a group of second slide grooves are opened at the bottom of each group of the translation plates; a number of adjustment columns are slidably connected in each group of the second slide grooves; a group of telescopic probes are provided at the bottom of each group of the adjustment columns; a scanning camera is provided at the bottom center of the first shell.

[0013] Furthermore, a transmission cavity is provided in the first shell; two groups of first control plates are symmetrically provided on the top of the two groups of translation plates; a double-end motor is provided on the top inner wall of the transmission cavity; a group of first screw rods are rotatably connected to the output ends of the double-end motors; each group of the first screw rods is threadedly connected to a corresponding group of first control plates.

[0014] Furthermore, two groups of second control plates are symmetrically provided at the top two side edges of each group of the translation plates; two groups of second screw rods and a group of guide rods are provided between the two corresponding groups of the second control plates; one end of the two corresponding groups of the second screw rods is fixedly connected, and the other end is rotatably connected to the corresponding group of second control plates; the thread directions of the two corresponding groups of the second screw rods are opposite, and the central axes are on the same line.

[0015] Furthermore, a group of transmission blocks are movably sleeved on the outer wall of each group of guide rods; each group of transmission blocks is threadedly connected to a corresponding group of second screw rods; two groups of connecting rods are coaxially hinged on the corresponding side walls of each group of transmission blocks and adjustment columns; and both ends of each group of connecting rods are respectively hinged to one end of the corresponding group of connecting rods.

[0016] Furthermore, the self-adjusting limit assembly includes a second shell; a vacuum pump is provided on the top of the second shell; a plurality of telescopic tubes are movably penetrated through one side wall of the second shell; a fixing plate is provided at one end of the plurality of telescopic tubes away from the second shell; an adsorption pad is provided on the top of the fixing plate; a plurality of adsorption holes are provided on the top of the adsorption pad in an array arrangement; and a plurality of adsorption holes are connected to a plurality of telescopic tubes.

[0017] Furthermore, a clamping plate is provided at the top of the fixing plate at an edge of one side close to the second shell; a sealing cushion is provided on a side wall of the clamping plate away from the second shell; a vacuum chamber is provided in the second shell; a support plate is provided in the vacuum chamber; a plurality of groups of buffer springs are provided at equal intervals on a side wall of the support plate close to the telescopic tube; each group of the buffer springs is elastically connected to a corresponding group of telescopic tubes.

[0018] A testing method for an adaptive flying probe testing device for a PCB soft board, the testing method comprising:

[0019] The control component is started to adjust the distance between the two sets of self-adjusting limit components;

[0020] Control two sets of self-adjusting limit assemblies to clamp the two ends of the PCB soft board and keep it in tension;

[0021] Control the size and port spacing of the PCB soft board scanned by the multi-flying probe test component;

[0022] Control the multi-flying probe test assembly to make adaptive adjustments to the PCB soft board to be tested;

[0023] Control the multi-flying probe test assembly to perform multi-channel synchronous testing on the PCB soft board;

[0024] Complete the flying probe test of PCB soft board.

[0025] The beneficial effects of the present invention are:

[0026] 1. By controlling two groups of translation plates to adjust the spacing according to the width of the PCB soft board, and then controlling the two groups of transmission blocks to synchronously translate in relative or opposite directions according to the port spacing of the PCB soft board, and then under the hinge relationship of several groups of connecting rods, several groups of adjustment columns and two groups of transmission blocks, several groups of adjustment columns can drive several groups of telescopic probes to adjust at equal distances, thereby achieving the effect of multi-channel simultaneous testing of the PCB soft board, and being able to automatically adapt and adjust according to different port spacings of different PCB soft boards, not only improving the test efficiency of the test device, but also improving the test compatibility of the test device.

[0027] 2. Adjust the spacing between the two sets of self-adjusting limit assemblies through the control assembly, and then start the two sets of vacuum pumps, so that the several sets of adsorption holes generate suction to adsorb the PCB soft board through the corresponding vacuum chamber and several sets of telescopic tubes, and then control the sealing pad and the adsorption pad to clamp the two ends of the PCB soft board. At the same time, the sealing pad will close the several sets of adsorption holes that are not adsorbed on the PCB soft board, so that the air pressure in the vacuum chamber is reduced, and several sets of telescopic tubes are contracted into the corresponding vacuum chamber, thereby stretching the PCB soft board to ensure a certain tension, avoiding curling during the flying probe test so that the flying probe cannot form a path with the PCB soft board, which not only improves the fixing efficiency of the PCB soft board, but also improves the test accuracy of the test device.

[0028] 3. By fixing the PCB soft board in the limit test mechanism and performing a flying probe test, the lifting jet frame is against the bottom of the top plate, so that the gas channel is connected with the output end of the filter fan, so that the filter fan can spray high-speed airflow through several groups of jet holes at the bottom of the gas channel to form an air wall to prevent dust from entering. When the test device is idle, the lifting jet frame can be controlled to descend, driving four groups of folding dustproof plates to extend from the corresponding storage slots to close the test device, avoiding the test structure in the test device from being in contact with the outside air for a long time, thereby increasing the service life of the test device.

[0029] 4. The key test structure in the test device is designed as an integrated unit. When maintenance work needs to be performed on the test structure, the double-ended hydraulic push rod in the adjustment chamber can be controlled to drive the two sets of limit plates to move toward opposite sides, disengaging the limit test mechanism to release the fixing work of the limit test mechanism, so that the limit test mechanism can be directly taken out for maintenance. The process is simple and quick, which improves the maintenance efficiency of the test device.

[0030] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 A schematic diagram of the structure of a testing device according to an embodiment of the present invention is shown;

[0033] Figure 2 A cross-sectional schematic diagram of a testing device according to an embodiment of the present invention is shown;

[0034] Figure 3 A schematic diagram of the structure of the test device when idle according to an embodiment of the present invention is shown;

[0035] Figure 4 A schematic structural diagram of a limit test mechanism according to an embodiment of the present invention is shown;

[0036] Figure 5 A schematic structural diagram of a multi-flying probe test assembly according to an embodiment of the present invention is shown;

[0037] Figure 6 A right side cross-sectional schematic diagram of a multi-flying probe test assembly according to an embodiment of the present invention is shown;

[0038] Figure 7 A cross-sectional schematic diagram of a multi-flying probe test assembly according to an embodiment of the present invention is shown;

[0039] Figure 8 A schematic structural diagram of a self-adjusting limit assembly according to an embodiment of the present invention is shown;

[0040] Fig. 9 A top cross-sectional schematic diagram of a self-adjusting limit assembly according to an embodiment of the present invention is shown.

[0041] In the figure: 1, base; 2, support column; 3, protective plate; 4, top plate; 5, filter fan; 6, lifting jet frame; 7, limit test mechanism; 8, gas channel; 9, jet hole; 10, folding dust plate; 11, first slide groove; 12, limit plate; 13, adjustment chamber; 14, double-end hydraulic push rod; 701, bottom plate; 702, limit groove; 703, lifting column; 704, lifting plate; 705, guide block; 706, multi-flying probe test assembly; 707, control assembly; 708, self-adjusting limit assembly; 70601, first shell; 70602, translation groove; 70603, translation plate; 70604, second slide groove; 70605, adjustment column; 70 606, telescopic probe; 70607, scanning camera; 70608, transmission chamber; 70609, first control board; 70610, double-ended motor; 70611, first screw rod; 70612, second control board; 70613, second screw rod; 70614, guide rod; 70615, transmission block; 70616, motor; 70617, connecting rod; 70801, second shell; 70802, vacuum pump; 70803, telescopic tube; 70804, fixing plate; 70805, adsorption cushion; 70806, clamping plate; 70807, sealing cushion; 70808, vacuum chamber; 70809, support plate; 70810, buffer spring. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] The embodiment of the present invention provides an adaptive flying probe test device for a PCB soft board, comprising a base 1. For example, Figure 1 , Figure 2 and Figure 3 As shown, a group of support columns 2 are respectively provided at the top corners of the base 1; three groups of protective plates 3 are provided between the four groups of support columns 2; a top plate 4 is provided on the top of the four groups of support columns 2; a filter fan 5 is provided on the top of the top plate 4; a lifting jet frame 6 is provided between the four groups of support columns 2; a gas channel 8 is provided in the lifting jet frame 6; the gas channel 8 is movably connected to the output end of the filter fan 5; a number of groups of jet holes 9 are evenly spaced at the bottom of the gas channel 8; a group of storage grooves are respectively provided at the bottom edge of the top plate 4; a group of folding dustproof plates 10 are provided in each group of the storage grooves; each group of The bottom of the folding dustproof plate 10 is connected to the top of the lifting jet frame 6; a limit test mechanism 7 is provided on the top of the base 1; a plurality of groups of first slide grooves 11 are symmetrically opened at the edges of both sides of the top of the base 1; a group of limit plates 12 are slidably connected in the plurality of groups of the first slide grooves 11 on the same side; each group of the limit plates 12 is movable through the limit test mechanism 7; an adjusting chamber 13 is provided in the base 1; a double-end hydraulic push rod 14 is provided on the top inner wall of the adjusting chamber 13; the bottom of each group of the limit plates 12 extends into the adjusting chamber 13, and is transmission-connected to the corresponding output end of the double-end hydraulic push rod 14.

[0044] When the test device is in use, the PCB soft board is fixed in the limit test mechanism 7 and a flying probe test is performed. At the same time, the lifting jet frame 6 is pressed against the bottom of the top plate 4, so that the gas channel 8 is connected to the output end of the filter fan 5, so that the filter fan 5 can spray high-speed airflow through several groups of jet holes 9 at the bottom of the gas channel 8 to form an air wall to prevent dust from entering. When the test device is idle, the lifting jet frame 6 can be controlled to descend, driving four groups of folding dustproof plates 10 to extend from the corresponding storage slots to close the test device, thereby preventing the test structure in the test device from being in contact with the outside air for a long time, thereby improving the service life of the test device. The key test structure in the test device is designed in an integrated manner. When the test structure needs to be maintained, the double-end hydraulic push rod 14 in the adjustment chamber 13 can be controlled to drive the two groups of limit plates 12 to move toward the opposite side, disengaging from the limit test mechanism 7 to release the fixing work of the limit test mechanism 7, so that the limit test mechanism 7 can be directly taken out for maintenance. The process is simple and fast, which improves the maintenance efficiency of the test device.

[0045] For example, Figure 4 As shown, the limit test mechanism 7 includes a base plate 701; a plurality of limit grooves 702 are symmetrically provided on both side walls of the base plate 701; each group of the limit plates 12 is movable through the plurality of limit grooves 702 on the corresponding side; two groups of lifting columns 703 are symmetrically provided at the edges of both sides of the top of the base plate 701; a lifting plate 704 is provided between the two groups of lifting columns 703; a guide block 705 is provided on the outer wall of the lifting plate 704; a multi-flying probe test assembly 706 is provided at the bottom of the guide block 705; a control assembly 707 is provided on the top of the base plate 701; and two groups of self-adjusting limit assemblies 708 are symmetrically provided on the output end of the control assembly 707.

[0046] When performing the flying probe test of the PCB soft board, firstly, the spacing of the two sets of self-adjusting limit assemblies 708 is adjusted through the control assembly 707 according to the size of the PCB soft board, and then the two ends of the PCB soft board are respectively fixed in a set of self-adjusting limit assemblies 708, and the two sets of self-adjusting limit assemblies 708 will automatically stretch the PCB soft board to keep its tension, and then the multi-flying probe test assembly 706 automatically adjusts the flying probe spacing according to the port of the PCB soft board, and then the guide block 705 is controlled to drive the multi-flying probe test assembly 706 to move horizontally, and the lifting plate 704 is controlled to drive the multi-flying probe test assembly 706 to move vertically to complete the flying probe test of the PCB soft board.

[0047] For example, Figure 5 , Figure 6 and Figure 7As shown, the multi-flying probe test assembly 706 includes a first shell 70601; two groups of translation slots 70602 are symmetrically opened at the bottom of the first shell 70601; a group of translation plates 70603 are slidably connected in each group of translation slots 70602; a group of second slide slots 70604 are opened at the bottom of each group of translation plates 70603; a plurality of adjustment columns 70605 are slidably connected in each group of the second slide slots 70604; a group of telescopic probes 70606 are arranged at the bottom of each group of the adjustment columns 70605; the first shell A scanning camera 70607 is provided at the bottom center of the body 70601; a transmission cavity 70608 is provided in the first shell 70601; two groups of first control boards 70609 are symmetrically provided on the top of the two groups of translation plates 70603; a double-end motor 70610 is provided on the top inner wall of the transmission cavity 70608; a group of first screw rods 70611 are rotatably connected to the output ends of the double-end motors 70610; each group of the first screw rods 70611 is threadedly connected to a corresponding group of first control boards 70609; each group of the translation plates 706 Two sets of second control plates 70612 are symmetrically arranged at the edges of both sides of the top of 03; two sets of second screw rods 70613 and a set of guide rods 70614 are arranged between the two corresponding sets of second control plates 70612; one end of the two corresponding sets of second screw rods 70613 is fixedly connected, and the other end is rotatably connected to the corresponding set of second control plates 70612; the thread directions of the two corresponding sets of second screw rods 70613 are opposite, and the central axis is on the same line; a set of transmission blocks 7061 are movably sleeved on the outer wall of each set of guide rods 70614 5; Each group of the transmission blocks 70615 is threadedly connected to a corresponding group of second screw rods 70613; two groups of connecting rods 70617 are coaxially hinged on the corresponding side walls of each group of the transmission blocks 70615 and the adjusting column 70605; both ends of each group of the connecting rods 70617 are respectively hinged to one end of the corresponding group of connecting rods 70617; one group of motors 70616 are respectively provided on one side wall of the two groups of the second control panels 70612; the output end of each group of the motors 70616 is transmission-connected to a corresponding group of second screw rods 70613.

[0048] When performing flying probe testing of a PCB soft board, a scanning camera 70607 scans the size and port spacing of the PCB soft board to be tested, and then controls the double-end motor 70610 to drive the two sets of first screw rods 70611 to rotate according to the width of the PCB soft board. Under the threaded connection relationship between the two sets of first screw rods 70611 and the two sets of first control boards 70609, the two sets of translation plates 70603 are adjusted to a good spacing. Then, according to the port spacing of the PCB soft board, the motor 70616 is controlled to drive the two sets of second screw rods 70613 to rotate. Under the threaded connection relationship between the two sets of second screw rods 70613 and the two sets of transmission blocks 70615 and the guide rods Under the limiting effect of 70614 on the two groups of transmission blocks 70615, the two groups of transmission blocks 70615 can be synchronously translated in relative or opposite directions, and then under the hinged relationship between several groups of connecting rods 70617, several groups of adjustment columns 70605 and the two groups of transmission blocks 70615, several groups of adjustment columns 70605 can drive several groups of telescopic probes 70606 to perform equidistant adjustment, thereby achieving the effect of multi-channel simultaneous testing of PCB soft boards, and can automatically adapt and adjust according to different port spacings of different PCB soft boards, which not only improves the test efficiency of the test device, but also improves the test compatibility of the test device.

[0049] For example, Figure 8 and Fig. 9 As shown, the self-adjusting limit assembly 708 includes a second shell 70801; a vacuum pump 70802 is provided on the top of the second shell 70801; a plurality of telescopic tubes 70803 are movably penetrated on one side wall of the second shell 70801; a fixing plate 70804 is provided at one end of the plurality of telescopic tubes 70803 away from the second shell 70801; an adsorption cushion 70805 is provided on the top of the fixing plate 70804; a plurality of adsorption holes are arranged in an array on the top of the adsorption cushion 70805; a plurality of adsorption holes are connected to a plurality of telescopic tubes 70803 ; A clamping plate 70806 is provided on the top of the fixing plate 70804, near the edge of one side of the second shell 70801; a sealing cushion 70807 is provided on the side wall of the clamping plate 70806 away from the second shell 70801; a vacuum chamber 70808 is provided in the second shell 70801; a support plate 70809 is provided in the vacuum chamber 70808; a plurality of groups of buffer springs 70810 are provided at equal intervals on the side wall of the support plate 70809 near the telescopic tube 70803; each group of the buffer springs 70810 is elastically connected to a corresponding group of telescopic tubes 70803.

[0050] When fixing the PCB soft board, firstly, the distance between the two sets of self-adjusting limit assemblies 708 is adjusted through the control assembly 707, and then the two sets of vacuum pumps 70802 are started, and the suction force is generated by the corresponding vacuum chambers 70808 and the several sets of telescopic tubes 70803 in the several sets of adsorption holes, and then the two ends of the PCB soft board are respectively placed on the corresponding set of adsorption pads 70805 for preliminary adsorption and fixation, and then the two sets of clamping plates 70806 are controlled to drive the two sets of sealing pads 70807 to contact the top of the two sets of adsorption pads 70805, so that the corresponding sealing pads The pad 70807 and the adsorption pad 70805 can clamp the two ends of the PCB soft board. At the same time, the sealing pad 70807 will close the several groups of adsorption holes that are not adsorbed on the PCB soft board, so that the air pressure in the vacuum chamber 70808 is reduced, and the several groups of telescopic tubes 70803 are contracted into the corresponding vacuum chamber 70808, thereby stretching the PCB soft board to ensure a certain tension, avoiding curling during the flying probe test so that the flying probe cannot form a path with the PCB soft board, which not only improves the fixing efficiency of the PCB soft board, but also improves the test accuracy of the test device.

[0051] By controlling the two groups of translation plates 70603 to adjust the spacing according to the width of the PCB soft board, and then controlling the two groups of transmission blocks 70615 to synchronously translate in relative or opposite directions according to the port spacing of the PCB soft board, and then under the hinged relationship between several groups of connecting rods 70617, several groups of adjustment columns 70605 and two groups of transmission blocks 70615, several groups of adjustment columns 70605 can drive several groups of telescopic probes 70606 to perform equidistant adjustment, thereby achieving the effect of multi-channel simultaneous testing of the PCB soft board, and being able to automatically adapt and adjust according to the different port spacings of different PCB soft boards, not only improving the test efficiency of the test device, but also improving the test compatibility of the test device.

[0052] The distance between the two groups of self-adjusting limit assemblies 708 is adjusted by the control assembly 707, and then the two groups of vacuum pumps 70802 are started, and the groups of adsorption holes generate suction to adsorb the PCB soft board through the corresponding vacuum chamber 70808 and the groups of telescopic tubes 70803, and then the sealing pad 70807 and the adsorption pad 70805 are controlled to clamp the two ends of the PCB soft board. At the same time, the sealing pad 70807 will close the groups of adsorption holes that have not adsorbed the PCB soft board, so that the air pressure in the vacuum chamber 70808 is reduced, and the groups of telescopic tubes 70803 are contracted into the corresponding vacuum chamber 70808, thereby stretching the PCB soft board to ensure a certain tension, avoiding curling during the flying probe test so that the flying probe cannot form a path with the PCB soft board, which not only improves the fixing efficiency of the PCB soft board, but also improves the test accuracy of the test device.

[0053] By fixing the PCB soft board in the limit test mechanism 7 and performing the flying probe test, the lifting jet frame 6 is in contact with the bottom of the top plate 4, so that the gas channel 8 is connected with the output end of the filter fan 5, so that the filter fan 5 can spray high-speed airflow through several groups of jet holes 9 at the bottom of the gas channel 8 to form an air wall to prevent dust from entering. When the test device is idle, the lifting jet frame 6 can be controlled to descend, driving four groups of folding dustproof plates 10 to extend from the corresponding storage slots to close the test device, thereby avoiding the test structure in the test device from being in contact with the outside air for a long time, thereby improving the service life of the test device.

[0054] The key test structure in the test device is designed as an integrated whole. When maintenance work needs to be performed on the test structure, the double-ended hydraulic push rod 14 in the adjustment chamber 13 can be controlled to drive the two sets of limit plates 12 to move toward opposite sides, disengaging from the limit test mechanism 7 to release the fixing work of the limit test mechanism 7, so that the limit test mechanism 7 can be directly taken out for maintenance. The process is simple and quick, which improves the maintenance efficiency of the test device.

[0055] Based on the above-mentioned adaptive flying probe test device for PCB soft board, the embodiment of the present invention further proposes a test method for the test device. Exemplarily, the test method includes:

[0056] The control component is started to adjust the distance between the two sets of self-adjusting limit components;

[0057] Control two sets of self-adjusting limit assemblies to clamp the two ends of the PCB soft board and keep it in tension;

[0058] Control the size and port spacing of the PCB soft board scanned by the multi-flying probe test component;

[0059] Control the multi-flying probe test assembly to make adaptive adjustments to the PCB soft board to be tested;

[0060] Control the multi-flying probe test assembly to perform multi-channel synchronous testing on the PCB soft board;

[0061] Complete the flying probe test of PCB soft board.

[0062] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An adaptive flying probe test device for a PCB soft board, comprising a base (1), Features: A limit test mechanism (7) is provided on the top of the base (1); The limit test mechanism (7) comprises a bottom plate (701); two groups of lifting columns (703) are symmetrically arranged at the edges of both sides of the top of the bottom plate (701); a lifting plate (704) is arranged between the two groups of lifting columns (703); and a guide block (705) is arranged on the outer wall of the lifting plate (704); A multi-flying probe test assembly (706) is provided at the bottom of the guide block (705); a control assembly (707) is provided at the top of the base plate (701); two groups of self-adjusting limit assemblies (708) are symmetrically provided at the output end of the control assembly (707); A group of support columns (2) are respectively provided at the top corners of the base (1); a top plate (4) is provided at the top of the four groups of support columns (2); a filter fan (5) is provided at the top of the top plate (4); a lifting jet frame (6) is provided between the four groups of support columns (2); a gas channel (8) is provided in the lifting jet frame (6); the gas channel (8) is movably connected to the output end of the filter fan (5); a plurality of groups of jet holes (9) are provided at equal intervals at the bottom of the gas channel (8); a group of storage grooves are respectively provided at the bottom edge of the top plate (4); a group of folding dustproof plates (10) are provided in each group of the storage grooves; the bottom of each group of the folding dustproof plates (10) is connected to the top of the lifting jet frame (6); The self-adjusting limit assembly (708) comprises a second shell (70801); a vacuum pump (70802) is provided on the top of the second shell (70801); a plurality of telescopic tubes (70803) are movably penetrated through one side wall of the second shell (70801); a fixing plate (70804) is provided at one end of the plurality of telescopic tubes (70803) away from the second shell (70801); an adsorption cushion (70805) is provided on the top of the fixing plate (70804); a plurality of adsorption holes are arranged in an array on the top of the adsorption cushion (70805); a plurality of adsorption holes are connected to a plurality of telescopic tubes (70803); A clamping plate (70806) is provided at the top of the fixing plate (70804) at an edge of one side close to the second shell (70801); a sealing cushion (70807) is provided on a side wall of the clamping plate (70806) away from the second shell (70801); a vacuum chamber (70808) is provided in the second shell (70801); a support plate (70809) is provided in the vacuum chamber (70808); a plurality of groups of buffer springs (70810) are provided at equal intervals on a side wall of the support plate (70809) close to the telescopic tube (70803); each group of the buffer springs (70810) is elastically connected to a corresponding group of telescopic tubes (70803); The two sets of self-adjusting limit assemblies (708) are controlled to clamp the two ends of the PCB soft board and keep the two ends of the PCB soft board in tension, and then the multi-flying probe test assembly (706) is controlled to scan the size and port spacing of the PCB soft board and perform adaptive adjustment, and finally the multi-flying probe test assembly (706) is controlled to perform multi-channel synchronous testing on the PCB soft board.

2. The adaptive flying probe test device for PCB soft board according to claim 1, Features: The multi-flying probe test assembly (706) comprises a first shell (70601); two groups of translation slots (70602) are symmetrically provided at the bottom of the first shell (70601); a group of translation plates (70603) are slidably connected in each group of the translation slots (70602); a group of second slide slots (70604) are provided at the bottom of each group of the translation plates (70603); a plurality of adjustment columns (70605) are slidably connected in each group of the second slide slots (70604); a group of telescopic probes (70606) are provided at the bottom of each group of the adjustment columns (70605); and a scanning camera (70607) is provided at the bottom center of the first shell (70601).

3. The adaptive flying probe test device for PCB soft board according to claim 2, Features: A transmission cavity (70608) is provided in the first shell (70601); two groups of first control plates (70609) are symmetrically provided on the top of the two groups of translation plates (70603); a double-end motor (70610) is provided on the inner wall of the top of the transmission cavity (70608); a group of first screw rods (70611) are rotatably connected to the output ends of the double-end motor (70610); each group of the first screw rods (70611) is threadedly connected to a corresponding group of first control plates (70609).

4. The adaptive flying probe test device for PCB soft board according to claim 3, Features: Two groups of second control plates (70612) are symmetrically arranged at the two side edges of the top of each group of the translation plates (70603); two groups of second screw rods (70613) and a group of guide rods (70614) are arranged between the two corresponding groups of the second control plates (70612); one end of the two corresponding groups of the second screw rods (70613) is fixedly connected, and the other end is rotatably connected to the corresponding group of the second control plates (70612); the thread directions of the two corresponding groups of the second screw rods (70613) are opposite, and the central axes are on the same line.

5. The adaptive flying probe test device for PCB soft board according to claim 4, Features: A group of transmission blocks (70615) are movably sleeved on the outer wall of each group of guide rods (70614); each group of transmission blocks (70615) is threadedly connected to a corresponding group of second screw rods (70613); two groups of connecting rods (70617) are coaxially hinged on the corresponding side walls of each group of transmission blocks (70615) and adjustment columns (70605); and both ends of each group of connecting rods (70617) are respectively hinged to one end of the corresponding group of connecting rods (70617).

6. A testing method for an adaptive flying probe testing device for a PCB flexible board based on any one of claims 1 to 5, Features: The test method includes: The control component is started to adjust the distance between the two sets of self-adjusting limit components; Control two sets of self-adjusting limit assemblies to clamp the two ends of the PCB soft board and keep it in tension; Control the size and port spacing of the PCB soft board scanned by the multi-flying probe test component; Control the multi-flying probe test assembly to make adaptive adjustments to the PCB soft board to be tested; Control the multi-flying probe test assembly to perform multi-channel synchronous testing on the PCB soft board; Complete the flying probe test of PCB soft board.

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