Testing device and testing method

Abstract

The invention belongs to the technical field of circuit board testing, and particularly relates to a testing device and a testing method.The testing device comprises a table body, a positioning mechanism, a testing mechanism and a discharging reset mechanism, and a mounting frame is arranged at the top of the table body; when the two sides of the circuit board are positioned and clamped to a certain force, the positioning mechanism automatically stops working; when the two sides of the circuit board on the top surface of the table body are clamped by the positioning mechanism to a certain force and the positioning mechanism automatically stops working, the testing mechanism automatically starts to work and performs primary testing on the circuit board on the top surface of the table body; when the testing mechanism completes one-time testing work, the discharging reset mechanism is automatically driven to suck away the tested circuit board on the top of the table body, and the positioning mechanism and the testing mechanism are driven to automatically reset. Therefore, the product loss rate is increased after the circuit board is clamped by mistake.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit board testing, in particular to a testing device and a testing method. Background Art

[0002] Electronic equipment usually needs to undergo production line testing before leaving the factory. After a product is finished in mass production, the PCB board used in the production line test can usually be reused for testing. During this process, a test device is needed to test the solder joints and other parts of the circuit board.

[0003] Currently, when testing a circuit board, a driving mechanism is mainly used to drive multiple sets of probes to move up and down to test the surface of the circuit board. During the test, in order to prevent the circuit board test position from being inaccurate, the circuit board is generally positioned by a positioning structure.

[0004] In the process of positioning the circuit board, the existing circuit board testing devices generally require position sensors or pressure sensors to assist in positioning due to the different sizes of the circuit boards. However, in the actual testing process, the sensors are prone to damage and accuracy loss after long-term use. Since the circuit board is a relatively delicate component, the side wall of the circuit board is often accidentally clamped during the positioning and clamping process, which leads to an increase in the loss rate of the circuit board product during the testing process. Summary of the invention

[0005] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0006] Therefore, the purpose of the present invention is to provide a testing device and a testing method to replace the traditional positioning method during circuit board testing, thereby avoiding the problem of increased product loss rate due to circuit board accidental clamping caused by component failure during the testing process.

[0007] To solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions: A testing device comprising: A platform body, the top of which is provided with a mounting frame; A positioning mechanism, which is installed on the platform and continuously positions and clamps the two sides of the circuit board on the top surface of the platform when working, wherein when the two sides of the circuit board are positioned and clamped to a certain force, the positioning mechanism automatically stops working; A testing mechanism, which is mounted on the mounting frame, wherein when both sides of the circuit board on the top surface of the platform are clamped by the positioning mechanism to a certain force and the positioning mechanism automatically stops working, the testing mechanism automatically starts working to perform a test on the circuit board on the top surface of the platform; The material unloading and resetting mechanism is installed on the top side of the platform, wherein when the testing mechanism completes a test, it automatically drives the material unloading and resetting mechanism to suck away the tested circuit board on the top of the platform and drives the positioning mechanism and the testing mechanism to automatically reset.

[0008] As a preferred solution of the testing device described in the present invention, the positioning mechanism includes two clamping members movably mounted on the platform and a driving component mounted on the platform and driving the two clamping members to move closer to each other during operation.

[0009] As a preferred solution of the testing device described in the present invention, one of the clamping members includes a moving block having an air groove on one side, a clamping block located on one side of the moving block and having a connecting column on the side wall, and a first elastic member connected to the side wall of the moving block at one end and connected to the side wall of the clamping block at the other end, wherein the connecting column is adapted to the air groove; The driving assembly includes a first threaded rod installed in the groove at the top of the platform and with opposite textures at both ends, a first limiting sliding rod located in the groove at the top of the platform, a first gear installed on the side wall of the platform and transmission connected to the first threaded rod, and a driving member installed on the side wall of the platform and transmission connected to the first gear, one end of the two moving blocks are respectively threadedly connected to the two ends of the first threaded rod, the other ends of the two moving blocks are slidably sleeved on the first limiting sliding rod, and one end of the first threaded rod is connected to the first gear through a first pulley group.

[0010] As a preferred solution of the testing device described in the present invention, one side of the moving block has a first connection port communicating with the air groove; The driving member includes a driving motor installed on the side wall of the platform body, a first connecting tube located at the output end of the driving motor and having an inner wall with a limiting groove, a connecting column with one end extending into the limiting groove and having an annular limiting groove on the surface of the other end, a second gear located at one end of the connecting column and corresponding to the first gear, and a second connecting tube installed on the side wall of the driving motor and having a second connecting port, a telescopic rod being movably connected to the inner wall of the second connecting tube, a limiting ring being provided at the output end of the telescopic rod being sleeved in the annular limiting groove, a second elastic member being provided on the side wall of the second connecting tube with the other end connected to the side wall of the limiting ring, and the second connecting port being connected to the first connecting port through a hose.

[0011] As a preferred embodiment of the testing device described in the present invention, the testing device includes a probe module movably mounted on the mounting frame, a gravity lifting assembly mounted on the mounting frame and transmission connected to the probe module, and a trigger assembly mounted on the platform and transmission connected to the second gear at one end and transmission connected to the gravity lifting assembly at the other end.

[0012] As a preferred solution of a testing device described in the present invention, the gravity lifting assembly includes a bevel gear group installed on the side wall of the mounting frame and having a reciprocating screw rod at one end, a second limiting slide rod installed on the mounting frame, and an eccentric weight movably installed on the side wall of the mounting frame and connected to the other end of the bevel gear group, one side of the probe module is threadedly connected to the reciprocating screw rod, and the other side of the probe module is slidably connected to the second limiting slide rod.

[0013] As a preferred solution of the testing device described in the present invention, the side wall of the second gear has a driving column with a gear ring on the surface, the side wall of the mounting frame is provided with a connecting frame, and the side wall of the connecting frame has a through groove with a limiting protrusion on the inner wall; The trigger assembly includes a third gear mounted on the side wall of the platform and meshing with a gear ring on the surface of the driving column, a second pulley group mounted on the side wall of the platform and connected to the third gear at one end, a threaded cylinder movably mounted on the side wall of the connecting frame and connected to the other end of the second pulley group at one end, and a limiting threaded rod adapted to the threaded cylinder and extending into the through groove, the side wall of the limiting threaded rod adapted to the limiting protrusion and one end corresponding to the bottom of the eccentric weight.

[0014] As a preferred solution of a testing device described in the present invention, the material unloading and resetting mechanism includes a mounting seat located on the top surface of the platform and having a rotating column inside, a flap fixedly sleeved on the rotating column and having a suction cup on one side, and a transmission component with one end transmission-connected to the probe module and the other end transmission-connected to the rotating column; The side wall of the flap has a trigger block, the bottom of the inner wall of the mounting seat has a trigger switch, the top surface of the platform has a first electromagnetic block corresponding to the side wall of the moving block, the side wall of the connecting frame has a second electromagnetic block corresponding to the side wall of the eccentric weight, and one side of the inner wall of the mounting seat has a third electromagnetic block corresponding to the side wall of the flap.

[0015] As a preferred solution of the testing device described in the present invention, one end of the rotating column has a first transmission pulley; The transmission assembly includes a serrated plate located on the side wall of the probe module, a fourth gear installed on the side wall of the mounting frame and meshing with the serrated plate, and a second transmission pulley connected to the fourth gear and connected to the first transmission pulley through a belt.

[0016] A testing method, which includes the testing device described above, comprises the following specific steps: S1, placing the circuit board to be tested on the top of the platform, and then the driving motor works to indirectly drive the first threaded rod to rotate, and at this time the second gear is meshed with the first gear; S2. As the two clamping blocks contact the two sides of the circuit board, the two sides of the circuit board are squeezed, and at the same time, the first elastic member is squeezed and deformed, and the connecting column is continuously inserted into the air groove, and the air in the air groove is continuously blown into the second connecting tube through the first connecting port, thereby indirectly pushing the second gear to move. When the first elastic member reaches a certain deformation amount, the two sides of the circuit board are completely positioned and clamped, and the second gear is separated from the first gear, thereby completing the positioning and clamping of the circuit board and playing an overload protection role on both sides of the circuit board; S3, when the second gear is separated from the first gear, the trigger member drives the gravity lifting assembly to work, thereby driving the probe module to complete the moving and lifting movement, and completing the test of the circuit board, and the gravity-driven test reduces the energy consumption of the device when it is working; S4. When the probe module completes a test, the transmission assembly drives the rotating column to rotate, thereby driving the flap to flip and the suction cup to suck the tested circuit board tightly. At this time, after the trigger switch contacts the trigger block, the first electromagnetic block, the second electromagnetic block and the third electromagnetic block are energized, and respectively drive the two clamping parts, the eccentric weight and the flap to return to their original positions, thereby automatically resetting after unloading, so as to facilitate continued testing of the next circuit board.

[0017] Compared with the prior art, the present invention has the beneficial effect that the testing device and testing method automatically clamp and position the two sides of the circuit board through the operation of the positioning mechanism, and automatically complete the positioning and clamping after the two sides of the circuit board are clamped to a certain force. At this time, the testing mechanism automatically starts to work and performs a test on the circuit board. After the test is completed, it automatically drives the unloading and resetting mechanism to suck away the tested circuit board. At the same time, it drives the positioning mechanism and the testing mechanism to automatically reset, so as to facilitate the next test, replacing the traditional positioning method during the circuit board testing process, and avoiding the problem of increased product loss rate after the circuit board is accidentally clamped due to component failure during the test process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail below in combination with the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them: Figure 1 It is a structural schematic diagram of a positioning mechanism of a testing device of the present invention; Figure 2 A structural disassembly diagram of a testing mechanism of a testing device of the present invention; Figure 3 This is a structural exploded diagram of a material unloading and resetting mechanism of a testing device of the present invention; Figure 4 It is a structural schematic diagram of a clamping member of a testing device of the present invention; Figure 5 A structural exploded diagram of a driving component of a testing device of the present invention; Figure 6 It is a structural schematic diagram of a positioning mechanism of a testing device of the present invention before working; Figure 7 It is a structural schematic diagram of a testing device of the present invention after the positioning mechanism has completed its work and the testing mechanism is working; Figure 8 It is a structural schematic diagram of a testing device of the present invention after the testing mechanism has finished working and the material unloading and resetting mechanism is working.

[0019] In the figure: 100, platform; 110, mounting frame; 110a, connecting frame; 110a-1, through slot; 110b, second electromagnetic block; 120, first electromagnetic block; 200, positioning mechanism; 210, clamping member; 210a, moving block; 210a-1, air slot; 210a-2, first connecting port; 210b, clamping block; 210b-1, connecting column; 210c, first elastic member; 22 0, driving assembly; 220a, first threaded rod; 220a-1, first pulley group; 220b, first limiting sliding rod; 220c, first gear; 220d, driving member; 220d-1, driving motor; 220d-2, first connecting cylinder; 220d-3, connecting column; 220d-31, annular limiting groove; 220d-4, second gear; 22041, driving column; 220d-5, second connecting tube; 220d-51, second connecting port; 220d-52, telescopic rod; 220d-53, limiting ring; 300, testing mechanism; 310, probe module; 320, gravity lifting assembly; 320a, bevel gear set; 320b, second limiting slide rod; 320c, eccentric weight; 330, trigger assembly; 330a, third gear; 330b, second pulley set; 330c, screw Cylinder; 330d, limit threaded rod; 400, material unloading reset mechanism; 410, mounting seat; 410a, rotating column; 410a-1, first transmission pulley; 410b, trigger switch; 410c, third electromagnetic block; 420, flap; 420a, suction cup; 420b, trigger block; 430, transmission assembly; 430a, serrated plate; 430b, fourth gear; 430c, second transmission pulley. DETAILED DESCRIPTION

[0020] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0021] Secondly, the present invention is described in detail with reference to schematic diagrams. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0022] In order to make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0023] The present invention provides a testing device and a testing method, which replace the traditional positioning method during the circuit board testing process, and avoid the problem of increased product loss rate after the circuit board is accidentally clamped due to component failure during the circuit board testing process.

[0024] Figure 1-Figure 8 The structure diagram of a testing device and a testing method of the present invention is shown in FIG. Figure 1-Figure 8 This paper gives a detailed introduction to the test device and test method.

[0025] Example 1, reference Figure 1-Figure 8 The present invention discloses a testing device, the main body of which includes a platform 100, a positioning mechanism 200, a testing mechanism 300 and a material unloading and resetting mechanism 400.

[0026] The platform 100 is used to carry the entire device and the circuit board. A mounting frame 110 is provided on the top of the platform 100 to facilitate the installation of the test mechanism 300. The positioning mechanism 200 is used to position and clamp the circuit board to be tested when working. The positioning mechanism 200 is installed on the platform 100 and continuously positions and clamps the two sides of the circuit board on the top surface of the platform 100 when working. When the two sides of the circuit board are positioned and clamped to a certain force, the positioning mechanism 200 automatically stops working. When the positioning mechanism 200 clamps the two sides of the circuit board to a certain force, the positioning and clamping are completed and the working is automatically stopped, so as to adapt to circuit boards of different sizes and provide overload protection for both sides of the circuit board. The testing mechanism 300 is used to perform a test on the circuit board when working. The testing mechanism 300 is installed on the mounting frame 110. When the two sides of the circuit board on the top surface of the platform 100 are clamped to a certain force by the positioning mechanism 200 and the positioning mechanism 200 automatically stops working, the testing mechanism 300 automatically starts working and performs a test on the circuit board on the top surface of the platform 100. When the positioning mechanism 200 completes the positioning and clamping of the circuit board, it automatically drives the testing mechanism 300 to start working and completes a test on the circuit board. The material unloading and resetting mechanism 400 is used to automatically unload the tested circuit board when the testing mechanism 300 completes the testing work, and drive the positioning mechanism 200 and the testing mechanism 300 to return to their original positions. The material unloading and resetting mechanism 400 is installed on the top side of the platform 100. When the testing mechanism 300 completes a test, it automatically drives the material unloading and resetting mechanism 400 to suck away the tested circuit board on the top of the platform 100 and drives the positioning mechanism 200 and the testing mechanism 300 to automatically reset. After the testing mechanism 300 completes the test, the material unloading and resetting mechanism 400 automatically sucks away the tested circuit board and drives the positioning mechanism and the testing mechanism 300 to reset, so as to facilitate the testing of the next circuit board.

[0027] In this embodiment, the present invention further discloses a testing method, which includes the above testing device.

[0028] In this embodiment, the specific use process is as follows: the circuit board to be tested is placed on the top of the platform 100, and the positioning mechanism 200 is used to clamp and position the two sides of the circuit board. When the two sides of the circuit board are clamped to a certain force, the positioning mechanism 200 automatically completes the positioning. At this time, the testing mechanism 300 starts to work and automatically performs a test on the circuit board. When the testing mechanism 300 completes the test of the circuit board, it drives the unloading and resetting mechanism 400 to work, sucks away the tested circuit board, and drives the positioning mechanism 200 and the testing mechanism 300 to automatically reset, so as to facilitate the next test.

[0029] Embodiment 2, based on Embodiment 1, the positioning mechanism 200 includes two clamping members 210 movably mounted on the platform 100 and a driving assembly 220 mounted on the platform 100 and driving the two clamping members 210 to approach each other when working. The two clamping members 210 are used to clamp and position the two sides of the circuit board when they are close to each other, and the driving assembly 220 is used to drive the two clamping members 210 to approach each other when working.

[0030] In this embodiment, one of the clamping members 210 includes a moving block 210a having an air groove 210a-1 on one side, a clamping block 210b located on one side of the moving block 210a and having a connecting column 210b-1 on the side wall, and a first elastic member 210c connected to the side wall of the moving block 210a at one end and connected to the side wall of the clamping block 210b at the other end, the connecting column 210b-1 is adapted to the air groove 210a-1, the moving block 210a is used to facilitate the installation and connection of the clamping block 210b and the first elastic member 210c, and the clamping block 210 b is used to position and clamp the side wall of the circuit board. The first elastic member 210c is used to deform after the clamping block 210b contacts the circuit board, thereby driving the connecting column 210b-1 to move. The connecting column 210b-1 cooperates with the air groove 210a-1, so that when the clamping block 210b is squeezed, as the first elastic member 210c is compressed, the connecting column 210b-1 continues to go deeper into the air groove 210a-1, and the air in the air groove 210a-1 is continuously squeezed to the first connecting port 210a-2; The driving assembly 220 includes a first threaded rod 220a installed in the groove at the top of the platform 100 and having opposite lines at both ends, a first limiting slide bar 220b located in the groove at the top of the platform 100, a first gear 220c installed on the side wall of the platform 100 and drivingly connected to the first threaded rod 220a, and a driving member 220d installed on the side wall of the platform 100 and drivingly connected to the first gear 220c. One end of the two moving blocks 210a is respectively threadedly connected to the two ends of the first threaded rod 220a, and the other ends of the two moving blocks 210a are slidably sleeved on the first limiting slide bar 220b. On 20b, one end of the first threaded rod 220a is connected to the first gear 220c through the first pulley group 220a-1, and the first threaded rod 220a is used to drive the two clamping members 210 to approach each other when rotating, and the first limiting slide bar 220b is used to limit the two clamping members 210, so as to avoid the two clamping members 210 from rotating synchronously when the first threaded rod 220a rotates, and the first gear 220c is used to drive the first pulley group 220a-1 to rotate when rotating, and the first pulley group 220a-1 is used to drive the first threaded rod 220a to rotate when rotating.

[0031] In this embodiment, one side of the moving block 210a has a first connection port 210a-2 connected to the air groove 210a-1, which is used to introduce the squeezed air in the air groove 210a-1 into the second connection tube 220d-5 through a hose; The driving member 220d includes a driving motor 220d-1 installed on the side wall of the platform 100, a first connecting cylinder 220d-2 located at the output end of the driving motor 220d-1 and having a limiting groove on the inner wall, a connecting column 220d-3 extending at one end into the limiting groove and having an annular limiting groove 220d-31 on the other end surface, a second gear 220d-4 located at one end of the connecting column 220d-3 and corresponding to the first gear 220c, and a second connecting port 220d-51 installed on the side wall of the driving motor 220d-1 and having a second connecting port 220d-51 on the side wall. The second connecting tube 220d-5 has a second connecting tube 220d-5, the inner wall of the second connecting tube 220d-5 is movably connected with a telescopic rod 220d-52, the output end of the telescopic rod 220d-52 is provided with a limiting ring 220d-53 sleeved in the annular limiting groove 220d-31, the side wall of the second connecting tube 220d-5 is provided with a second elastic member connected to the side wall of the limiting ring 220d-53 at the other end, the second connecting port 220d-51 is connected to the first connecting port 210a-2 through a hose, and the driving motor 220d-1 is used to drive the first connecting port 210a-2 to drive the first connecting port 210a-2 to drive the first connecting port 210a-2 to drive the first connecting port 210a-2 to drive the first connecting port 210a-2 to drive the first connecting port 210a-2 to drive the first connecting port 210a-2 to drive the first connecting port 210a-2 to drive the second ... The cylinder 220d-2 rotates, the first connecting cylinder 220d-2 is used to drive the connecting column 220d-3 and the second gear 220d-4 to rotate when rotating, the connecting column 220d-3 is used to flexibly connect the second gear 220d-4 and the first connecting cylinder 220d-2, the second gear 220d-4 is used to drive the first gear 220c to rotate when rotating, the second connecting cylinder 220d-5 is used to push the telescopic rod 220d-52 outward after the high-pressure air enters the interior, and the second connecting port 220d-51 is used to receive the air from the first connecting port The high-pressure air of 210a-2, the telescopic rod 220d-52 is used to drive the limit ring 220d-53 to move when telescoping, and the limit ring 220d-53 is used to cooperate with the annular limit groove 220d-31, so that when the telescopic rod 220d-52 moves, it drives the connecting column 220d-3 to move in the first connecting tube 220d-2, thereby driving the second gear 220d-4 to move, and the second elastic member is used to drive the telescopic rod 220d-52 to restore its original state under its own elastic force after the high-pressure air in the second connecting tube 220d-5 is discharged.

[0032] In this embodiment, the specific working process is as follows: when the circuit board on the top of the platform 100 is positioned, the driving motor 220d-1 works to drive the first connecting cylinder 220d-2, the connecting column 220d-3 and the second gear 220d-4 to rotate. At this time, the second gear 220d-4 rotates to drive the first gear 220c to rotate. When the first gear 220c rotates, it drives the first pulley group 220a-1 to rotate and then drives the first threaded rod 220a to rotate. When the first threaded rod 220a rotates, it drives the two clamping members 210 to approach each other. As the two clamping blocks 210b contact the side wall of the circuit board, the first elastic member 210c is continuously squeezed and deformed, and the connecting column 210b-1 is continuously The air in the air slot 210a-1 is squeezed through the hose into the second connecting tube 220d-5, thereby driving the telescopic rod 220d-52 to move and then driving the connecting column 220d-3 and the second gear 220d-4 to move. When the deformation of the first elastic member 210c reaches a certain value, the two sides of the circuit board are completely positioned and clamped. At this time, the second gear 220d-4 is separated from the first gear 220c, so that the first threaded rod 220a stops rotating, and the two clamping members 210 stop approaching each other, completing the clamping and positioning of the circuit board, and playing a role of overload protection for both sides of the circuit board to avoid internal clamping of the two sides of the circuit board.

[0033] Embodiment 3, on the basis of embodiment 2, the testing device comprises a probe module 310 movably mounted on a mounting frame 110, a gravity lifting assembly 320 mounted on the mounting frame 110 and transmission connected to the probe module 310, and a trigger assembly 330 mounted on the platform 100 and transmission connected to the second gear 220d-4 at one end and transmission connected to the gravity lifting assembly 320 at the other end. The probe module 310 is used to test the circuit board when it contacts the circuit board. The gravity lifting assembly 320 is used to drive the probe module 310 to complete the lifting and moving by its own gravity when working, thereby reducing energy consumption. The trigger assembly 330 is used to trigger the gravity lifting assembly 320 to start working after the positioning mechanism 200 completes the positioning.

[0034] In this embodiment, the gravity lifting assembly 320 includes a bevel gear set 320a installed on the side wall of the mounting frame 110 and having a reciprocating screw at one end, a second limiting slide bar 320b installed on the mounting frame 110, and an eccentric weight 320c movably installed on the side wall of the mounting frame 110 and connected to the other end of the bevel gear set 320a. One side of the probe module 310 is threadedly connected to the reciprocating screw, and the other side of the probe module 310 is slidingly connected to the second limiting slide bar 320b. The bevel gear set 320a is used to drive the reciprocating screw to rotate when it rotates, and the reciprocating screw is used to drive the probe module 310 to perform a reciprocating downward and upward movement when it rotates. The second limiting slide bar 320b is used to limit the probe module 310 to prevent the reciprocating screw from rotating synchronously when it rotates. The eccentric weight 320c is used to drive the bevel gear set 320a to rotate when it swings, and the test mechanism 300 is driven by its own gravity to complete, thereby reducing energy consumption during testing.

[0035] In this embodiment, the side wall of the second gear 220d-4 has a driving column 22041 with a toothed ring on the surface, which is used to drive the third gear 330a to rotate when the second gear 220d-4 moves and drives it to move. The side wall of the mounting frame 110 is provided with a connecting frame 110a, which is used to facilitate the installation of the threaded cylinder 330c. The side wall of the connecting frame 110a has a through groove 110a-1 with a limiting protrusion on the inner wall, which is used to limit the limiting threaded rod 330d, so that when the threaded cylinder 330c rotates, the limiting threaded rod 330d is driven to telescopically move; The trigger assembly 330 includes a third gear 330a installed on the side wall of the platform 100 and meshing with the gear ring on the surface of the driving column 22041, a second pulley group 330b installed on the side wall of the platform 100 and connected to the third gear 330a at one end, a threaded cylinder 330c movably installed on the side wall of the connecting frame 110a and connected to the other end of the second pulley group 330b at one end, and a limiting threaded rod 330d adapted to the threaded cylinder 330c and extending into the through groove 110a-1, the third gear 330a is used to drive the second pulley group 330b to rotate when rotating, the second pulley group 330b is used to drive the threaded cylinder 330c to rotate when rotating, the threaded cylinder 330c is used to drive the limiting threaded rod 330d to telescopically move when rotating, the side wall of the limiting threaded rod 330d is adapted to the limiting protrusion and one end corresponds to the bottom of the eccentric weight 320c, so as to limit one side of the eccentric weight 320c to prevent it from swinging freely.

[0036] In this embodiment, the specific working process is as follows: when the positioning mechanism 200 completes the positioning and clamping of the circuit board, the second gear 220d-4 moves to separate from the first gear 220c. As the second gear 220d-4 moves, it drives the driving column 22041 to move, thereby driving the third gear 330a to rotate. When the third gear 330a rotates, it drives the second pulley group 330b to rotate. When the second pulley group 330b rotates, it drives the threaded barrel 330c to rotate. When the threaded barrel 330c rotates, it drives the limiting threaded rod 330d to contract, thereby contacting the limit of the eccentric weight 320c. At this time, the eccentric weight 320c begins to swing, driving the bevel gear group 320a to rotate and then driving the reciprocating screw to rotate. When the reciprocating screw rotates, it drives the probe module 310 to move down and up once, thereby completing the test of the circuit board.

[0037] Embodiment 4, on the basis of embodiment 3, the material unloading reset mechanism 400 includes a mounting seat 410 located on the top surface of the platform 100 and having a rotating column 410a inside, a flap 420 fixedly sleeved on the rotating column 410a and having a suction cup 420a on one side, and a transmission assembly 430 that is transmission-connected to the probe module 310 at one end and transmission-connected to the rotating column 410a at the other end. The mounting seat 410 is used to facilitate the installation of the flap 420, the rotating column 410a is used to fix the flap 420, and the flap 420 is used to drive the suction cup 420a to suck away the circuit board after the test when rotating. At the same time, when flipping, the dust attached to the surface of the circuit board is blown away by driving the rapid flow of air, so as to facilitate subsequent use. The transmission assembly 430 is used to drive the rotating column 410a to rotate when working; The side wall of the flap 420 has a trigger block 420b, which is used to trigger the trigger switch 410b to work after contacting it. The bottom of the inner wall of the mounting seat 410 has a trigger switch 410b, which is used to energize the first electromagnetic block 120, the second electromagnetic block 110b and the third electromagnetic block 410c after contacting the trigger block 420b. The top surface of the table 100 has a first electromagnetic block 120 corresponding to the side wall of the moving block 210a, which is used to adsorb the two moving blocks 210a to return to their original positions after power is turned on. The side wall of the connecting frame 110a has a second electromagnetic block 110b corresponding to the side wall of the eccentric weight 320c, which is used to adsorb the eccentric weight 320c to return to its original position after power is turned on. One side of the inner wall of the mounting seat 410 has a third electromagnetic block 410c corresponding to the side wall of the flap 420, which is used to adsorb the flap 420 to return to its original position after rotation, and suck the tested circuit board sucked by the suction cup 420a away from the surface of the table 100.

[0038] In this embodiment, one end of the rotating column 410a has a first transmission pulley 410a-1, which is used to drive the rotating column 410a to rotate when rotating; The transmission assembly 430 includes a serrated plate 430a located on the side wall of the probe module 310, a fourth gear 430b installed on the side wall of the mounting frame 110 and meshing with the serrated plate 430a, and a second transmission pulley 430c connected to the fourth gear 430b and connected to the first transmission pulley 410a-1 through a belt. The serrated plate 430a is used to drive the fourth gear 430b to rotate when the probe module 310 moves upward, the fourth gear 430b is used to drive the second transmission pulley 430c to rotate when it rotates, and the second transmission pulley 430c is used to drive the first transmission pulley 410a-1 to rotate when it rotates.

[0039] In this embodiment, a connecting member is connected between the fourth gear 430b and the second transmission pulley 430c, and the connecting member includes a ratchet connecting seat with a ratchet groove on the side wall, and a ratchet located in the ratchet groove and having a plurality of elastic pawls on the side wall, which is used to prevent the second transmission pulley 430c from being driven to reverse when the probe module 310 descends, thereby causing the flap 420 to get stuck.

[0040] In this embodiment, the specific working process is as follows: when the probe module 310 completes the test and rises, the fourth gear 430b is driven to rotate through the sawtooth plate 430a, and when the fourth gear 430b rotates, it drives the second transmission pulley 430c to rotate, and when the second transmission pulley 430c rotates, it drives the first transmission pulley 410a-1 to rotate, thereby driving the rotating rod to rotate and driving the flap 420 to flip, and when the flap 420 flips, it drives the suction cup 420a to suck the circuit board after the test is completed. When the trigger block 420b contacts the trigger switch 410b, the first electromagnetic block 120, the second electromagnetic block 110b and the third electromagnetic block 410c are energized. At this time, the two moving blocks 210a, the eccentric weight 320c and the flap 420 return to their original positions, and the circuit board is sucked away by the suction cup 420a, so as to facilitate the continued testing of the subsequent circuit boards.

[0041] A circuit testing method, which includes the above circuit testing device, has the following specific steps: S1, placing the circuit board to be tested on the top of the platform 100, and then driving the motor 220d-1 to work, indirectly driving the first threaded rod 220a to rotate, at this time the second gear 220d-4 is meshed with the first gear 220c; S2. As the two clamping blocks 210b contact the two sides of the circuit board, the two sides of the circuit board are squeezed, and at the same time, the first elastic member 210c is squeezed and deformed, and the connecting column 210b-1 is continuously inserted into the air groove 210a-1, and the air in the air groove 210a-1 is continuously blown into the second connecting cylinder 220d-5 through the first connecting port 210a-2, thereby indirectly pushing the second gear 220d-4 to move. When the first elastic member 210c reaches a certain deformation amount, the two sides of the circuit board are completely positioned and clamped. At this time, the second gear 220d-4 is separated from the first gear 220c, thereby completing the positioning and clamping of the circuit board and playing an overload protection role on both sides of the circuit board; S3, when the second gear 220d-4 is separated from the first gear 220c, the gravity lifting assembly 320 is driven to work by the trigger member, thereby driving the probe module 310 to complete the moving and lifting movement, and the circuit board test is completed. The gravity-driven test reduces the energy consumption of the device during operation; S4. When the probe module 310 completes a test, the transmission assembly 430 drives the rotating column 410a to rotate, thereby driving the flap 420 to flip, and the suction cup 420a sucks the tested circuit board tightly. At this time, after the trigger switch 410b contacts the trigger block 420b, the first electromagnetic block 120, the second electromagnetic block 110b and the third electromagnetic block 410c are energized, and respectively drive the two clamping parts 210, the eccentric weight 320c and the flap 420 to return to their original positions, thereby completing the unloading and automatically resetting, so as to facilitate the next circuit board test.

[0042] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced by equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A testing device, characterized in that: include: A platform body (100) having a mounting frame (110) disposed on the top thereof; a positioning mechanism (200) which is mounted on the platform (100) and which continuously positions and clamps two sides of the circuit board on the top surface of the platform (100) when in operation, wherein when the two sides of the circuit board are positioned and clamped to a certain force, the positioning mechanism (200) automatically stops working; a testing mechanism (300) mounted on the mounting frame (110), wherein when two sides of the circuit board on the top surface of the platform (100) are clamped by the positioning mechanism (200) to a certain force and the positioning mechanism (200) automatically stops working, the testing mechanism (300) automatically starts working to perform a test on the circuit board on the top surface of the platform (100); A material unloading and resetting mechanism (400) is installed on one side of the top of the platform (100), wherein when the testing mechanism (300) completes a test, the material unloading and resetting mechanism (400) is automatically driven to suck away the tested circuit board on the top of the platform (100) and drive the positioning mechanism (200) and the testing mechanism (300) to automatically reset.

2. A testing device according to claim 1, characterized in that: The positioning mechanism (200) comprises two clamping members (210) movably mounted on the platform (100) and a driving assembly (220) mounted on the platform (100) and driving the two clamping members (210) to move closer to each other during operation.

3. A testing device according to claim 2, characterized in that: One of the clamping members (210) comprises a moving block (210a) having an air groove (210a-1) on one side, a clamping block (210b) located on one side of the moving block (210a) and having a connecting column (210b-1) on the side wall, and a first elastic member (210c) having one end connected to the side wall of the moving block (210a) and the other end connected to the side wall of the clamping block (210b), the connecting column (210b-1) being adapted to the air groove (210a-1); The driving assembly (220) comprises a first threaded rod (220a) installed in the groove at the top of the platform (100) and having opposite lines at both ends, a first limiting sliding rod (220b) located in the groove at the top of the platform (100), a first gear (220c) installed on the side wall of the platform (100) and transmission-connected to the first threaded rod (220a), and a driving member (220d) installed on the side wall of the platform (100) and transmission-connected to the first gear (220c), one end of the two moving blocks (210a) are respectively threadedly connected to the two ends of the first threaded rod (220a), the other ends of the two moving blocks (210a) are slidably sleeved on the first limiting sliding rod (220b), and one end of the first threaded rod (220a) is connected to the first gear (220c) via a first pulley set (220a-1).

4. A testing device according to claim 3, characterized in that: One side of the moving block (210a) has a first connection port (210a-2) communicating with the air groove (210a-1); The driving member (220d) comprises a driving motor (220d-1) mounted on the side wall of the platform (100), a first connecting cylinder (220d-2) located at the output end of the driving motor (220d-1) and having an inner wall with a limiting sliding groove, a connecting column (220d-3) with one end extending into the limiting sliding groove and having an annular limiting groove (220d-31) on the other end surface, a second gear (220d-4) located at one end of the connecting column (220d-3) and corresponding to the first gear (220c), and a second gear (220d-5) mounted on the side wall of the driving motor (220d-1) and having a second A second connecting tube (220d-5) of the connecting port (220d-51), the inner wall of the second connecting tube (220d-5) being movably connected to a telescopic rod (220d-52), the output end of the telescopic rod (220d-52) being provided with a limiting ring (220d-53) sleeved in the annular limiting groove (220d-31), the side wall of the second connecting tube (220d-5) being provided with a second elastic member whose other end is connected to the side wall of the limiting ring (220d-53), and the second connecting port (220d-51) being connected to the first connecting port (210a-2) via a hose.

5. A testing device according to claim 4, characterized in that: The testing device comprises a probe module (310) movably mounted on the mounting frame (110), a gravity lifting assembly (320) mounted on the mounting frame (110) and transmission-connected to the probe module (310), and a trigger assembly (330) mounted on the platform (100) and transmission-connected to the second gear (220d-4) at one end and transmission-connected to the gravity lifting assembly (320) at the other end.

6. A testing device according to claim 5, characterized in that: The gravity lifting assembly (320) comprises a bevel gear set (320a) mounted on the side wall of the mounting frame (110) and having a reciprocating screw at one end, a second limiting slide bar (320b) mounted on the mounting frame (110), and an eccentric weight (320c) movably mounted on the side wall of the mounting frame (110) and connected to the other end of the bevel gear set (320a); one side of the probe module (310) is threadedly connected to the reciprocating screw, and the other side of the probe module (310) is slidably connected to the second limiting slide bar (320b).

7. A testing device according to claim 6, characterized in that: The side wall of the second gear (220d-4) has a driving column (22041) with a gear ring on its surface, the side wall of the mounting frame (110) is provided with a connecting frame (110a), and the side wall of the connecting frame (110a) has a through groove (110a-1) with a limiting protrusion on its inner wall; The trigger assembly (330) comprises a third gear (330a) mounted on the side wall of the platform (100) and meshing with a toothed ring on the surface of the driving column (22041), a second belt pulley set (330b) mounted on the side wall of the platform (100) and connected at one end to the third gear (330a), a threaded barrel (330c) movably mounted on the side wall of the connecting frame (110a) and connected at one end to the other end of the second belt pulley set (330b), and a limiting threaded rod (330d) adapted to the threaded barrel (330c) and extending into the through groove (110a-1), the side wall of the limiting threaded rod (330d) adapted to the limiting protrusion and one end corresponding to the bottom of the eccentric weight (320c).

8. A testing device according to claim 7, characterized in that: The material unloading and resetting mechanism (400) comprises a mounting seat (410) located on the top surface of the platform (100) and having a rotating column (410a) inside, a flap (420) fixedly sleeved on the rotating column (410a) and having a suction cup (420a) on one side, and a transmission assembly (430) having one end drivingly connected to the probe module (310) and the other end drivingly connected to the rotating column (410a); The side wall of the flap (420) has a trigger block (420b), the bottom of the inner wall of the mounting seat (410) has a trigger switch (410b), the top surface of the platform (100) has a first electromagnetic block (120) corresponding to the side wall of the moving block (210a), the side wall of the connecting frame (110a) has a second electromagnetic block (110b) corresponding to the side wall of the eccentric weight (320c), and one side of the inner wall of the mounting seat (410) has a third electromagnetic block (410c) corresponding to the side wall of the flap (420).

9. A testing device according to claim 8, characterized in that: One end of the rotating column (410a) is provided with a first transmission pulley (410a-1); The transmission assembly (430) comprises a sawtooth plate (430a) located on the side wall of the probe module (310), a fourth gear (430b) mounted on the side wall of the mounting frame (110) and meshing with the sawtooth plate (430a), and a second transmission pulley (430c) connected to the fourth gear (430b) and connected to the first transmission pulley (410a-1) via a belt.

10. A testing method, comprising the testing device according to any one of claims 1 to 9, characterized in that: The specific steps are as follows: S1, placing a circuit board to be tested on the top of the platform (100), and then driving the motor (220d-1) to work, thereby indirectly driving the first threaded rod (220a) to rotate, and at this time the second gear (220d-4) is meshed with the first gear (220c); S2. As the two clamping blocks (210b) contact the two sides of the circuit board, the two sides of the circuit board are squeezed, and at the same time the first elastic member (210c) is squeezed and deformed, and the connecting column (210b-1) is continuously inserted into the air groove (210a-1), and the air in the air groove (210a-1) is continuously blown into the second connecting cylinder (220d-5) through the first connecting port (210a-2), thereby indirectly pushing the second gear (220d-4) to move, and when the first elastic member (210c) reaches a certain deformation amount, the two sides of the circuit board are completely positioned and clamped, and the second gear (220d-4) is separated from the first gear (220c), thereby completing the positioning and clamping of the circuit board and playing an overload protection role on both sides of the circuit board; S3, when the second gear (220d-4) is separated from the first gear (220c), the trigger member drives the gravity lifting assembly (320) to work, thereby driving the probe module (310) to complete the moving lifting movement, thereby completing the test of the circuit board, and the gravity-driven test reduces the energy consumption of the device when it is working; S4. When the probe module (310) completes a test, the transmission assembly (430) drives the rotating column (410a) to rotate, thereby driving the flap (420) to flip, and the suction cup (420a) sucks the tested circuit board tightly. At this time, after the trigger switch (410b) contacts the trigger block (420b), the first electromagnetic block (120), the second electromagnetic block (110b) and the third electromagnetic block (410c) are energized, and respectively drive the two clamping members (210), the eccentric weight (320c) and the flap (420) to return to their original positions, thereby automatically resetting after unloading, so as to facilitate continued testing of the next circuit board.

Images