CN116699370A

CN116699370A - PCBA test platform and test process

Info

Publication number: CN116699370A
Application number: CN202310984578.4A
Authority: CN
Inventors: 梅超; 何晓辉; 程亚磊; 覃卓
Original assignee: Shenzhen Weite Precision Technology Co ltd
Current assignee: Shenzhen Weite Precision Technology Co ltd
Priority date: 2023-08-07
Filing date: 2023-08-07
Publication date: 2023-09-05
Anticipated expiration: 2043-08-07
Also published as: CN116699370B

Abstract

The invention relates to the field of PCBA testing, in particular to a PCBA testing platform and a testing process, wherein a sliding through groove is symmetrically formed in the left inner wall and the right inner wall of the testing cavity, a longitudinally extending rotating screw rod is inserted in the sliding through groove, PCBA placing units are jointly arranged on the outer side surfaces of the upper ends of all the rotating screw rods, PCBA plates are placed in the PCBA placing units, discharging through grooves are symmetrically formed in the front inner wall and the rear inner wall of the testing cavity, opening and closing sealing units are rotationally arranged on the discharging through grooves, clamping and locking assemblies are respectively arranged on the left surface and the right surface of the testing cavity, a pressing driving unit is arranged at the upper end of the testing cavity, and a screw rod driving unit is further arranged at the upper end and the lower end of the testing cavity.

Description

PCBA test platform and test process

Technical Field

The invention relates to the field of PCBA testing, in particular to a PCBA testing platform and a testing process.

Background

The PCBA is an English name of a printed circuit board, is an important step in the production process of electronic products, and refers to assembling various electronic components into products of the finished Printed Circuit Board (PCB), and after the PCBA is assembled, various tests on the PCBA are required to be carried out to ensure that the PCBA can normally run, and the test method of the PCBA comprises an electrifying test, a high-temperature aging test, a vibration test, an electrostatic test and the like.

However, the existing PCBA testing methods test the unidirectional function of a single PCBA, the testing efficiency of this method is relatively low, and the quality of the product cannot be completely guaranteed, and with the development of technology, those skilled in the relevant field also optimize the testing platform and process of the PCBA in a large amount, so as to perform more accurate comparison, for example, a PCBA testing device is disclosed in chinese patent with publication No. CN 210863956U; the universal meter is fixedly connected with the universal meter in the installation box during use, the installation plate is arranged in the middle of the outer side of the fixing plate, the liquid crystal display screen is fixedly connected to one side of the installation plate, and an independent needle plate structure is adopted, so that an operator needs to replace three acrylic plates when replacing a PCB (printed circuit board), the universal meter and the liquid crystal display screen are integrated on the outer sides of the first fixing plate and the second fixing plate, the universal meter and the liquid crystal display screen can be actually operated in the detection process, and when strong electric test is needed, the acrylic pressing plate is pressed down to be electrified, and the power is cut off after the acrylic pressing plate is pulled up.

However, the PCBA testing apparatus described above has some drawbacks in the practical use process: 1. the test platform can only test single PCBA in the test process, when a large number of PCBA are to be tested, the efficiency becomes very low, and the test platform can only test single PCBA board, so that the applicability is low.

The test platform is only aimed at conventional power-on test and strong electric test when testing PCBA, but is not limited to strong electric test such as high-temperature aging test, static test and vibration test when testing PCBA, and cannot be realized, namely the test function is single.

When the PCBA is installed, the bolts are required to be manually installed, the bolts are required to be taken out after the test is completed, so that a large amount of test time is occupied, the test platform can only test one PCBA at a time, and when the PCBA is tested for a large amount of PCBA, the test platform cannot be used for any batch test, namely, the test limitation exists.

Thus, under the above stated view, there is still room for optimizing the manner in which the prior art tests PCBA.

Disclosure of Invention

In order to solve the problems, the invention provides a PCBA test platform and a test process.

In a first aspect, a PCBA test platform, including the test cavity, the slip leads to the groove all symmetry on the inner wall about the test cavity has been seted up, slip leads to the inslot and is equipped with vertically extended rotation lead screw, be provided with PCBA on the lateral surface of all rotation lead screw upper ends jointly and place the unit, PCBA board has been placed in the unit to PCBA, the row material leads to the groove all symmetry has been seted up on the inner wall around the test cavity, it is provided with the sealed unit that opens and shuts to rotate on the row material leads to the groove, all be provided with the tight locking subassembly of clamp that is used for the centre gripping rotation lead screw on the face about the test cavity, test cavity upper end is provided with and supports tight drive unit, the upper and lower end of test cavity still is provided with the lead screw drive unit who is connected with rotation lead screw.

Preferably, the PCBA places the unit including sliding the sliding plate that sets up in the slip through groove, sliding plate and rotation lead screw threaded connection are provided with the placing plate jointly on all sliding plates, the placing through groove that is the rectangle and distributes has been seted up on the placing plate, place the PCBA board in the placing through groove, still seted up the fixed slot corresponding with placing through groove four sides on the placing plate, the fixed slot lower extreme still is provided with the fixed subassembly that is used for pressing from both sides the PCBA board, insert in the fixed slot and have installed the installation piece, the placing plate top is provided with the rectangle mounting bracket of being connected with the installation piece, set up the detection through groove corresponding with the placing through groove on the rectangle mounting bracket, install the spacing slat corresponding with the inner wall of placing through groove on the detection through groove inner wall, spacing through groove has been seted up on the spacing slat, wherein, the placing plate lower terminal surface still is provided with electromagnetism opening and shutting mechanism.

Preferably, the fixed subassembly is including seting up the tight cavity of support in the fixed slot lower extreme, support tight cavity and fixed slot and be linked together, the inside slip of fixed slot is provided with fixed connecting rod one, fixed connecting rod one's lower extreme is rotated and is connected with fixed connecting rod two, fixed connecting rod two is kept away from fixed connecting rod one's one end and is rotated and be connected with the fixed block, fixed block is kept away from fixed connecting rod two's one end and is connected with fixed spring bar, and fixed spring bar's promotion end passes to support tight cavity and is provided with the impeller, fixed connecting rod lower extreme and support and be connected with the pressure spring that resets between the tight cavity bottom.

Preferably, the electromagnetic opening and closing mechanism comprises a first mounting plate symmetrically arranged at the left end and the right end of the placing plate, a first rotating shaft is rotatably arranged between the first mounting plates, a first bearing plate is arranged on the outer side face of the first rotating shaft, the first bearing plate corresponds to the position of the placing through groove one by one, a second mounting plate is symmetrically arranged at the front end and the rear end of the placing plate, a second rotating shaft is rotatably arranged between the second mounting plates, a second bearing plate is arranged on the outer side face of the second rotating shaft, the second bearing plate corresponds to the position of the placing through groove one by one, electromagnetic ferrules are arranged at the two ends of the first rotating shaft and the second rotating shaft, a permanent magnet plate is arranged on the electromagnetic ferrules, an arc-shaped electromagnetic plate with the same magnetism as the permanent magnet plate is further arranged below the permanent magnet plate, one end of the arc-shaped electromagnetic plate, which is far away from the permanent magnet plate, is connected with the placing plate, a torsion spring is arranged between the electromagnetic ferrules and the first mounting block, and the first torsion spring is also arranged between the electromagnetic ferrules and the second mounting block.

Preferably, the opening and closing sealing unit comprises a sealing rotating shaft which is rotatably arranged on the inner walls of two sides of the discharging through groove, a sealing ferrule is arranged on the outer side face of the sealing rotating shaft, a torsion spring II is arranged between the sealing rotating shaft and the discharging through groove, a sealing expansion plate is arranged on the outer side face of the sealing ferrule, sealing laths are arranged on opposite sides of the two sealing expansion plates which are distributed up and down, the sealing laths correspond to the sliding through groove, a rubber sealing strip is further arranged at one end of the sealing laths, which is close to the sliding through groove, T-shaped guide blocks are respectively arranged at the left end and the right end of the discharging through groove, a sealing displacement plate is further arranged between the two T-shaped guide blocks, a sealing displacement groove which is in sliding fit with the T-shaped guide blocks is formed in the lower end of the sealing displacement plate, a sealing displacement cylinder is arranged at the lower end of the sealing displacement block, a pushing shaft of the sealing displacement cylinder is connected with the lower end of the sealing displacement groove, the sealing expansion plate is provided with a sealing sticking component at the position corresponding to the discharging through groove, and one end of the sealing expansion plate, which is far away from the sealing ferrule.

Preferably, the seal attaching assembly comprises seal mounting blocks symmetrically arranged on the seal expansion plate, a seal rotating shaft is rotatably arranged between the two seal mounting blocks symmetrically distributed, a U-shaped seal frame is arranged on the outer side face of the seal rotating shaft, a torsion spring III is arranged between the U-shaped seal frame and the seal mounting blocks, one end of the U-shaped seal frame, far away from the seal rotating shaft, is provided with a seal flitch, and one end of the seal flitch, far away from the U-shaped seal frame, is provided with a seal rubber strip.

Preferably, the tight drive unit of support is including the L shape support frame of symmetry installation on the test cavity left and right sides, two L shape support frames keep away from the opposite side of test cavity one end and are provided with the rectangle backup pad jointly, the rectangle supports tight groove in the middle part of rectangle backup pad, the rectangle supports the middle part in tight groove and slides and be provided with the double-sided rack board, the stopper is installed to the upper end of double-sided rack board, still be provided with in the rectangle backup pad and support tight motor, it installs in the rectangle backup pad to support tight motor through the motor cabinet, the output of supporting tight motor is provided with the tight gear of support with bilateral rack board meshing, rectangle backup pad upper end still is provided with and supports tight cylinder, the tight end of support tight cylinder still is provided with the tight pinion of support with bilateral rack board meshing, the lower extreme of bilateral rack board still is provided with vibrations detecting element.

Preferably, the vibration detection unit comprises a rectangular plate arranged at the lower end of the double-sided rack plate, one surface of the rectangular plate, which is far away from the double-sided rack plate, is provided with a plurality of PCBA test plates corresponding to the through grooves, the left side and the right side of the double-sided rack plate are symmetrically provided with L-shaped support plates, rectangular sliding grooves are formed in the outer sides of the L-shaped support plates, limiting rods are arranged in the rectangular sliding grooves, rectangular first sliding blocks are arranged on the limiting rods in a sliding mode, and reset springs are arranged between the rectangular first sliding blocks and the tops of the rectangular sliding grooves;

The one end that gag lever post was kept away from to rectangle first sliding block is provided with the rectangle carriage, and the rectangle carriage longitudinally slides in L shape backup pad, and rectangle vibrations frame is installed jointly to the opposite side of two rectangle carriages, and rectangle vibrations frame upper end both sides all symmetry are provided with vibrating motor, and vibrating motor passes through the motor cabinet and installs on rectangle vibrations frame, and the inboard of rectangle vibrations frame still is provided with the cross support frame, and the cross support frame all is provided with the vibrations contact block that is the rectangle and distributes with the lower terminal surface of rectangle vibrations frame, and the cross recess corresponding with the cross support frame has still been seted up to the lower extreme of rectangular plate.

Preferably, the screw rod driving unit comprises driving supporting columns symmetrically arranged at the lower end of the testing cavity, first sliding grooves are formed in opposite sides of the two driving supporting columns, first driving air cylinders are arranged in the first sliding grooves, first sliding blocks sliding in the first sliding grooves are arranged on pushing shafts of the first driving air cylinders, driving plates are arranged between the two first sliding blocks, driving shafts which are symmetrically distributed are arranged on the left side and the right side of each driving plate in a rotating mode, and the driving shafts penetrate through the driving plates;

the lower end of the driving plate is also provided with a driving motor, a main shaft of the driving motor penetrates through the driving plate, two driving shafts of the main shaft and the front end of the driving motor are respectively provided with a belt wheel I, the belt wheels I of the main shaft of the driving motor are connected with the belt wheels I of the driving shaft through a transmission belt I, all driving shafts are also provided with belt wheels II, two belt wheels II of the left end are connected with each other through a transmission belt II, belt wheels II of the right end are connected with each other through a transmission belt II, one end of the rotating screw rod, facing the driving shaft, is provided with a first hexagonal hole, and a first hexagonal rod in plug-in fit with the first hexagonal hole is arranged on the driving shaft;

Two opposite sides of L shape support frame have all been seted up the second sliding tray, the second sliding tray is provided with the second sliding block in the slip of second sliding tray, be provided with the second actuating cylinder who is connected with the second sliding block in the second sliding tray, be provided with the shape frame that returns between two second sliding blocks, correspond on the shape frame and rotate lead screw department and rotate and install spacing pivot, the second hexagonal hole has been seted up towards the one end of spacing pivot to the rotation lead screw, install in the spacing pivot with second hexagonal hole grafting complex second hexagonal pole.

Preferably, the clamping and locking assembly comprises clamping through grooves symmetrically formed in the left surface and the right surface of the test cavity, the clamping through grooves are communicated with the sliding through grooves, the rotating screw rod is located in the clamping through grooves, symmetrically distributed abutting blocks are arranged in the clamping through grooves in a sliding mode, one ends of the abutting blocks, far away from the rotating screw rod, are provided with clamping connecting rods I, two clamping connecting rods I are located outside the test cavity, one ends of the clamping connecting rods I, far away from the abutting blocks, are rotatably mounted on the T-shaped support through rotating shafts, one sides of the T-shaped support, far away from the test cavity, are provided with linkage plates, two ends of the linkage plates are rotatably mounted on the clamping connecting rods I through rotating shafts II, the rotating shafts are located on one sides of the rotating shafts I, far away from the test cavity, the linkage plates are slidably arranged on sliding guide plates fixed on the test cavity, pushing plates are connected between the two linkage plates, and a clamping air cylinder used for controlling the pushing plates to move is arranged on the outer wall of the test cavity.

In a second aspect, the invention also provides a PCBA testing process, which comprises the following steps:

s1: PCBA detects preparation, places the PCBA board that will test in the placing through groove of PCBA placing unit, and installation rectangle mounting bracket is spacing to the PCBA board, and installation piece on the rectangle mounting bracket can drive fixed subassembly and carry out further support to the PCBA board, and the electromagnetism of placing the board bottom opens and shuts the mechanism and carry out the bearing to the bottom of PCBA board.

S2: and (3) vibration testing, namely starting to push the vibration detection unit to the upper part of the PCBA placing unit by the abutting driving unit, at this time, abutting the rectangular mounting frame by the vibration contact block on the vibration detection unit, starting the vibration motor to perform vibration testing on the PCBA board, and testing the PCBA board by the PCBA testing board on the rectangular board after the vibration testing is completed.

S3: aging test and static test; when the PCBA placing unit moves to the upper part of the opening and closing sealing unit, the sealing expansion plate is pushed to swing downwards until being attached to the inner side face of the testing cavity, after the PCBA plate enters the position of the aging test and the static test, the sealing expansion plate is not pushed by the PCBA placing unit any more, and the torsion of the torsion spring II returns to the initial position to complete sealing, and at the moment, the aging test and the static test can be carried out.

In summary, the present application includes at least one of the following beneficial technical effects:

according to the application, the PCBA boards can be fixed through the PCBA placing unit, the PCBA boards with various sizes are adapted in a manner of installing the rectangular mounting frame, four sides of the PCBA boards can be further fixed through the fixing assembly, and the clamping stability is improved.

According to the application, when the PCBA board is unqualified in test through the electromagnetic opening and closing mechanism, the PCBA board in a single area can be dropped by using the device, and the PCBA board is discharged out of the test cavity through the discharging through groove, so that the process of manually picking the PCBA board is omitted, and the applicability of the PCBA board is greatly improved.

The application can not only carry out electrifying test on the PCBA board, but also carry out vibration test on the PCBA board, and the test cavity is also internally provided with a high-temperature aging test system, an electrostatic test aging test and an electrostatic test, so that various types of tests can be carried out on the PCBA board, the applicability of the application is improved, and the high-temperature aging system and the electrostatic test system need a closed environment in the test process.

According to the invention, the rotating screw rod can be driven through the screw rod driving unit, when the PCBA placing unit is to be taken out from the rotating screw rod, the screw rod rotating unit can cancel contact with the rotating screw rod, and when the rotating screw rod is to be tested, the screw rod driving unit can be tightly attached to the rotating screw rod to provide driving force for the rotating screw rod.

Drawings

The invention will be further described with reference to the drawings and examples.

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a schematic structural view of the PCBA placing unit of the present invention.

Fig. 3 is a schematic structural view of the fixing assembly of the present invention.

Fig. 4 is a schematic structural view of the abutting driving unit of the present invention.

Fig. 5 is a schematic structural view of the shock detecting unit of the present invention.

Fig. 6 is a schematic structural view of the shock detecting unit of the present invention.

Fig. 7 is a schematic structural view of the screw driving unit of the present invention.

Fig. 8 is a schematic structural view of the screw driving unit of the present invention.

Fig. 9 is a schematic view of the clamp lock assembly of the present invention.

Fig. 10 is a schematic structural view of the electromagnetic opening and closing mechanism of the present invention.

Fig. 11 is a schematic structural view of the opening and closing sealing unit of the present invention.

Fig. 12 is a schematic structural view of the opening and closing sealing unit of the present invention.

Fig. 13 is a schematic view of the seal application assembly of the present invention.

In the figure, 1, a test cavity; 10. sliding through grooves; 11. rotating the screw rod; 12. PCBA board; 13. discharging through grooves;

2. a PCBA placement unit; 20. a sliding plate; 21. placing a plate; 22. placing a through groove; 23. a fixing groove; 24. a mounting block; 25. a rectangular mounting frame; 26. limit lath; 27. limiting through grooves;

28. a fixing assembly; 280. abutting the cavity; 281. fixing a first connecting rod; 282. a second fixed connecting rod; 283. a fixed block; 284. fixing a spring rod; 285. a pushing block;

3. a pressing driving unit; 30. an L-shaped support frame; 31. a rectangular support plate; 32. double-sided rack plate; 33. a limiting block; 34. abutting against the motor; 35. abutting against the gear; 36. abutting the cylinder; 37. abutting against the toothed plate;

38. a vibration detecting unit; 380. a rectangular plate; 381. PCBA test board; 382. an L-shaped support plate; 383. a rectangular sliding groove; 384. a limit rod; 385. a rectangular sliding block; 386. a return spring; 390. a rectangular sliding frame; 391. a rectangular vibration frame; 392. a vibration motor; 393. a cross support frame; 394. vibrating the contact block; 395. a cross groove;

4. a screw driving unit; 40. driving the support column; 401. a first sliding groove; 402. a first driving cylinder; 403. a first slider; 404. a driving plate; 410. a drive shaft; 411. a driving motor; 412. a belt wheel I; 413. a first transmission belt; 414. a belt wheel II; 415. a second transmission belt; 416. a first hexagonal hole; 417. a first hexagonal rod; 420. a second sliding groove; 421. a second slider; 422. a second driving cylinder; 423. a shape-returning frame; 424. a limiting rotating shaft; 425. a second hexagonal hole; 426. a second hexagonal rod;

430. A clamp lock assembly; 431. clamping the through groove; 432. a tightening block; 433. clamping a first connecting rod; 434. a T-shaped bracket; 435. a first rotating shaft; 436. a linkage plate; 437. clamping a second connecting rod; 438. a second rotating shaft; 439. a sliding guide plate; 440. a pushing plate; 441. a clamping cylinder;

5. an electromagnetic opening and closing mechanism; 50. a first mounting plate; 51. a first rotating shaft; 52. a first bearing plate; 53. a second mounting plate; 54. a second rotating shaft; 55. a second bearing plate; 56. an electromagnetic collar; 57. a permanent magnet plate; 58. an arc-shaped electromagnetic plate; 59. an L-shaped mounting rack;

6. an opening and closing sealing unit; 60. sealing the rotating shaft; 61. a sealing collar; 62. sealing the expansion plate; 63. sealing the lath; 64. a rubber sealing strip; 65. a T-shaped guide block; 66. sealing the displacement plate; 67. sealing the displacement groove; 68. sealing the displacement cylinder; 69. a discharge chute;

610. sealing and tightly attaching the assembly; 611. sealing the mounting block; 612. sealing the rotating shaft; 613. a U-shaped sealing frame; 614. sealing the flitch; 615. sealing the rubber strip.

Detailed Description

Embodiments of the present invention are described in detail below with reference to fig. 1 through 13, but the present invention may be embodied in a number of different ways, which are defined and covered by the claims.

The embodiment of the application discloses a PCBA test platform and a test process, which are mainly applied to the process of testing PCBA boards and can test a plurality of PCBA boards in technical effect; particularly, in the links requiring a closed space for testing, a sealing environment can be provided for the testing device; in addition, the PCBA test platform can automatically remove some PCBA boards which do not pass through the test, and the manual picking process is omitted.

Embodiment one:

referring to fig. 1, the inner walls of the test cavity 1 are symmetrically provided with sliding through grooves 10, the sliding through grooves 10 are internally provided with longitudinally extending rotating screw rods 11, the outer side surfaces of the upper ends of all the rotating screw rods 11 are jointly provided with a PCBA placing unit 2, the rotating screw rods 11 can drive the PCBA placing unit 2 to move in the vertical direction in the test cavity 1 through rotation, the PCBA placing unit 2 is internally provided with a PCBA plate 12, the PCBA placing unit 2 can fixedly clamp the PCBA plate 12, the PCBA plate 12 is prevented from falling, displacing and the like in the test process, and subsequent tests are facilitated.

The front and rear inner walls of the testing cavity 1 are symmetrically provided with the discharging through grooves 13, the discharging through grooves 13 are rotationally provided with the opening and closing sealing units 6, the opening and closing sealing units 6 can discharge the PCBA board 12 which is not passed by the test out of the testing cavity 1 through the discharging through grooves 13, the opening and closing sealing units 6 can also seal the internal aging test and static test components, and in the testing process of the PCBA board 12, the external factors are prevented from influencing the testing process and the testing result; the left and right sides of the test cavity 1 are provided with clamping and locking assemblies 430 for clamping the rotary screw rod 11, and the clamping and locking units can clamp and fix the rotary screw rod 11 so as to prevent the rotary screw rod 11 from falling off or shifting and failing.

The upper end of the testing cavity 1 is provided with a propping driving unit 3, and the propping driving unit 3 can drive a vibration detection unit 38 above to test the PCBA 12; the upper and lower ends of the test cavity 1 are also provided with a screw rod driving unit 4 connected with the rotating screw rod 11, the screw rod driving unit 4 can drive the rotating screw rod 11, and can limit the rotating screw rod 11 to prevent the rotating screw rod 11 from inclining in the rotating process.

Referring to fig. 2, a PCBA placing unit 2 for positioning and fixing the PCBA board 12; specifically, the PCBA placing unit 2 includes a sliding plate 20 slidably disposed in the sliding through groove 10, where the sliding plate 20 is in threaded connection with the rotating screw rod 11, and all the sliding plates 20 are provided with a placing plate 21 together, and the rotating screw rod 11 rotates to drive the sliding plate 20 to move up and down, and when the sliding plate 20 moves up and down, the placing plate 21 can be driven to move up and down by the driving of the rotating screw rod 11; the placing plate 21 is provided with placing through grooves 22 which are distributed in a rectangular shape, the placing through grooves 22 are internally provided with PCBA boards 12, the placing plate 21 is also provided with fixing grooves 23 which correspond to the four sides of the placing through grooves 22, the lower ends of the fixing grooves 23 are also provided with fixing components 28 which are used for clamping the PCBA boards 12, and the fixing components 28 are used for further fixing the four sides of the PCBA boards 12.

The installation piece 24 is inserted in the fixed slot 23, the installation piece 24 is inserted and is established can link fixed subassembly 28 behind the fixed slot 23 and fix PCBA board 12, place board 21 top and be provided with the rectangle mounting bracket 25 that is connected with installation piece 24, the top at place board 21 is installed to rectangle mounting bracket 25, installation piece 24 slip on the rectangle mounting bracket 25 sets up in the fixed slot 23, can lead to spacing to rectangle mounting bracket 25, prevent rectangle mounting bracket 25 and drop, set up the detection logical groove corresponding with placing logical groove 22 on the rectangle mounting bracket 25, the detection logical groove can be convenient for detection device tests PCBA board 12, can not receive the shielding.

The limit lath 26 corresponding to the inner wall of the placing through groove 22 is arranged on the inner wall of the detecting through groove, the range of the inner wall of the limit lath 26 can be matched with the size of the PCBA board 12, the PCBA board 12 is limited, and the PCBA board 12 is prevented from falling off; the limiting lath 26 is provided with a limiting through groove 27, the limiting through groove 27 can enable the fixing assembly 28 to penetrate through the limiting lath 26 to fix the PCBA board 12, wherein the lower end face of the placing plate 21 is further provided with an electromagnetic opening and closing mechanism 5, and the electromagnetic opening and closing mechanism 5 can support the bottom of the PCBA board 12.

In the specific implementation process, the mounting blocks 24 on the rectangular mounting frame 25 are inserted into the through grooves 22 on the placing plate 21, the rectangular mounting frame 25 is fixed, the PCBA board 12 is placed into the through grooves 22 on the placing plate 21, four sides of the PCBA board 12 are tightly attached to the limit laths 26 on the rectangular mounting frame 25, and the PCBA board 12 is initially fixed at the moment.

Referring to fig. 3, a fixing assembly 28 for further limiting and fixing four sides of the PCBA board 12 is shown; specifically, the fixing assembly 28 includes a tightening cavity 280 disposed at a lower end of the fixing groove 23, the tightening cavity 280 is communicated with the fixing groove 23, a first fixing link 281 is slidably disposed in the fixing groove 23, a second fixing link 282 is rotatably connected to a lower end of the first fixing link 281, the first fixing link 281 is driven to move by a bottom portion of the first fixing link 24 inserted into the fixing groove 23, the second fixing link 282 can be driven to move when the first fixing link 281 moves, a fixing block 283 is rotatably connected to an end of the second fixing link 282 away from the first fixing link 281, a fixing spring rod 284 is connected to an end of the fixing block 283 away from the second fixing link 282, the fixing block 283 is used for connecting the second fixing link 282 and the fixing spring rod 284, and a pushing end of the fixing spring rod 284 passes through the tightening cavity 280 and is provided with a pushing block 285, and a reset compression spring (not shown in the figure) is connected between the lower end of the first fixing link 281 and the bottom portion of the tightening cavity 280.

In the specific implementation process, when the abutting driving unit 3 moves downwards, the rectangular mounting frame 25 is pushed to move downwards, namely the mounting block 24 on the rectangular mounting frame 25 slides downwards in the fixed groove 23, so that the mounting block 24 pushes the first fixed connecting rod 281 to move, the first fixed connecting rod 281 pushes the second fixed connecting rod 282 to move, the second fixed connecting rod 282 pushes the fixed spring rod 284 to move through the fixed block 283, the pushing end of the fixed spring rod 284 pushes the pushing block 285 to pass through the abutting cavity 280, and the PCBA board 12 is further abutted through the limiting through groove 27 on the limiting slat 26; when the abutting driving unit 3 moves upwards to reset, the reset pressure spring (not shown in the figure) can provide an upward force for the first fixing link 281, that is, the rectangular mounting bracket 25 moves upwards, the mounting block 24 on the rectangular mounting bracket 25 no longer presses on the first fixing link 281, the first fixing link 281 returns to the initial position under the action of the reset pressure spring (not shown in the figure), and at this time, the fixing assembly 28 no longer fixes the PCBA board 12.

Embodiment two:

referring to fig. 4, in order to test the vibration of the PCBA board 12, the abutting driving unit 3 is required to drive the detecting unit to abut against the PCBA board 12; specifically, the abutting driving unit 3 comprises L-shaped supporting frames 30 symmetrically arranged on the left and right sides of the testing cavity 1, the opposite sides of one end, far away from the testing cavity 1, of the two L-shaped supporting frames 30 are provided with rectangular supporting plates 31 together, and the L-shaped supporting frames 30 can play a role in supporting and fixing the rectangular supporting plates 31; the middle part of rectangle backup pad 31 has seted up the rectangle and has supported tight groove, and the rectangle supports the middle part in tight groove and slides and be provided with double rack board 32, and stopper 33 is installed to double rack board 32's upper end, and stopper 33 can prevent that double rack board 32 from taking place to drop when moving downwards.

The rectangular supporting plate 31 is also provided with a tight supporting motor 34, the tight supporting motor 34 is arranged on the rectangular supporting plate 31 through a motor seat, the output end of the tight supporting motor 34 is provided with a tight supporting gear 35 meshed with the double-sided rack plate 32, the tight supporting motor 34 can drive the tight supporting gear 35 to rotate, and the tight supporting gear 35 can drive the double-sided rack plate 32 meshed with the tight supporting gear to move up and down in the rotating process; the upper end of the rectangular supporting plate 31 is also provided with a tightening cylinder 36, the tightening end of the tightening cylinder 36 is also provided with a tightening toothed plate 37 meshed with the double-sided rack plate 32, and when the double-sided rack plate 32 moves to a specified position, the tightening cylinder 36 can push the tightening toothed plate 37 to be meshed with teeth of the double-sided rack plate 32, so that the double-sided rack plate 32 is fixed, and the double-sided rack plate 32 is prevented from being displaced.

The lower end of the double-sided rack plate 32 is also provided with a vibration detection unit 38, and the vibration detection unit 38 can perform vibration testing on the PCBA board 12.

Referring to fig. 5 and 6, a vibration detection unit 38 for performing a vibration test on the PCBA board 12; specifically, the vibration detecting unit 38 includes a rectangular plate 380 disposed at the lower end of the double-sided rack plate 32, where a plurality of PCBA test boards 381 corresponding to the placement through slots 22 are disposed on a surface of the rectangular plate 380 away from the double-sided rack plate 32, and the PCBA test boards 381 can pass through the placement through slots 22 to test the PCBA board 12 therein; l-shaped support plates 382 are symmetrically arranged on the left side and the right side of the double-sided rack plate 32, and the L-shaped support plates 382 can support and fix the rectangular plate 380.

The outside of L shape backup pad 382 has seted up rectangular sliding groove 383, is provided with gag lever post 384 in the rectangular sliding groove 383, and the last slip of gag lever post 384 is provided with rectangular sliding block 385, is provided with reset spring 386 between rectangular sliding block 385 and the rectangular sliding groove 383 top, and the sliding block can slide in rectangular sliding groove 383, and gag lever post 384 can prevent that the sliding block from breaking away from rectangular sliding groove 383 in the slip in-process, and reset spring 386 can provide elasticity to rectangular sliding block 385 for when vibrations detecting element 38 closely pastes with PCBA placement unit 2, reach the optimal test result.

The rectangular sliding block 385 is provided with the rectangular sliding frame 390 far away from the one end of the limiting rod 384, the rectangular sliding frame 390 longitudinally slides on the L-shaped supporting plate 382, the rectangular vibrating frame 391 is jointly installed on opposite sides of the two rectangular sliding frames 390, vibrating motors 392 are symmetrically arranged on two sides of the upper end of the rectangular vibrating frame 391, the vibrating motors 392 can transmit vibration during rotation, the vibrating motors 392 are installed on the rectangular vibrating frame 391 through motor bases, the cross support frames 393 are further arranged on the inner sides of the rectangular vibrating frame 391, the cross support frames 393 play a role in stabilizing the rectangular vibrating frame 391, the rectangular vibrating frame 391 is prevented from deforming in the vibration process, vibrating contact blocks 394 which are distributed in a rectangular mode are arranged on the lower end faces of the cross support frames 393 and the rectangular vibrating frame 391, the vibrating contact blocks 394 can transmit vibration to the rectangular mounting frame 25, cross grooves 395 corresponding to the cross support frames 380 are further formed in the lower ends of the rectangular plate 380, and when the cross support frames 393 are at the same height as the rectangular support frames 380, the cross support frames 393 can be stored in the cross grooves 395.

In the implementation process, when the PCBA board 12 is to be subjected to vibration test, the abutting driving unit 3 pushes the vibration detection unit 38 to the upper side of the test cavity 1, at this time, the vibration contact block 394 on the rectangular vibration frame 391 is contacted with the rectangular mounting frame 25, the vibration motor 392 is started, the vibration of the vibration motor 392 is transferred to the vibration contact block 394 along with the rectangular vibration frame 391, the vibration contact block 394 transfers the vibration to the rectangular mounting frame 25, and the rectangular mounting frame 25 drives the PCBA board 12 to vibrate.

After the vibration test is finished, the abutting driving unit 3 continuously pushes the vibration detecting unit 38 to move towards the upper end of the test cavity 1, at this time, the rectangular vibration frame 391 slides to a height level with the rectangular plate 380, and after the PCBA test plate 381 on the rectangular plate 380 contacts with the PCBA plate 12, the abutting driving unit 3 stops pushing, at this time, the PCBA test plate 381 carries out the power-on test on the PCBA plate 12.

Embodiment III:

referring to fig. 7 and 8, on the basis of the second embodiment, in order to rotate the rotary screw 11, the PCBA placing unit 2 is driven to move up and down in the test cavity 1, and a screw driving unit 4 is provided; specifically, the screw rod driving unit 4 includes a driving support column 40 symmetrically disposed at the lower end of the testing cavity 1, a first sliding groove 401 is formed on opposite sides of the two driving support columns 40, a first driving air cylinder 402 is disposed in the first sliding groove 401, a first sliding block 403 sliding in the first sliding groove 401 is mounted on a pushing shaft of the first driving air cylinder 402, a driving plate 404 is disposed between the two first sliding blocks 403, the first driving air cylinder 402 can drive the first sliding block 403 to move up and down, the first sliding block 403 can drive the driving plate 404 to move, symmetrically distributed driving shafts 410 are rotatably disposed on left and right sides of the driving plate 404, and the driving shafts 410 penetrate through the driving plate 404.

The lower extreme of drive plate 404 still is provided with driving motor 411, driving motor 411's main shaft passes driving plate 404, driving motor 411 main shaft and two drive shafts 410 of front end are last to be provided with band pulley one 412, be connected through transmission belt one 413 between band pulley one 412 of driving motor 411 main shaft and the band pulley one 412 on the drive shaft 410, driving motor 411 main shaft on band pulley one 412 can drive the band pulley one 412 on two drive shafts 410 of front end through transmission belt one 413 and carry out the syntropy rotation, still be provided with band pulley two 414 on all drive shafts 410, be connected through transmission belt two 415 between two band pulleys 414 of left end, be connected through transmission belt two 415 between the band pulley two 414 of right-hand member, first hexagonal hole 416 has been seted up towards the one end of drive shaft 410 to rotate the lead screw 11, install the first hexagonal rod 417 with the grafting cooperation of first hexagonal hole 416 on the drive shaft 410, drive shaft 410 passes through the connection of first hexagonal hole 416 on first hexagonal hole 416 and the first hexagonal hole 416 on the drive screw 11, drive screw 11 rotates.

The two opposite sides of the L-shaped supporting frames 30 are provided with second sliding grooves 420, second sliding blocks 421 are slidably arranged in the second sliding grooves 420, second driving air cylinders 422 connected with the second sliding blocks 421 are arranged in the second sliding grooves 420, a square frame 423 is arranged between the two second sliding blocks 421, the second driving air cylinders 422 can drive the second sliding blocks 421 to move up and down in the second sliding grooves 420, the square frame 423 can be driven to move up and down, a limiting rotating shaft 424 is rotatably arranged on the square frame 423 corresponding to the rotating screw 11, a second hexagonal hole 425 is formed in one end of the rotating screw 11, which faces the limiting rotating shaft 424, and a second hexagonal rod 426 in plug-in fit with the second hexagonal hole 425 is arranged on the limiting rotating shaft 424.

In a specific implementation process, the driving plate 404 is driven to move upwards through the first driving cylinder 402, the driving plate 404 drives the driving motor 411 and the driving shaft 410 to move upwards synchronously, when the driving shaft 410 approaches to the rotating screw 11, the first hexagonal rod 417 at the upper end of the driving shaft 410 is connected with the first hexagonal hole 416 at the lower end of the rotating screw 11, at this time, the driving motor 411 is started, the driving motor 411 drives the belt pulley one 412 on the outer side surfaces of the two driving shafts 410 at the front end to rotate through the belt pulley one 413, the belt pulley one 412 drives the two driving shafts 410 at the front end to rotate, the belt pulley two 414 is driven to rotate through the belt pulley two 415 when the two driving shafts 410 at the front end rotate, and the two driving shafts 410 at the rear end are driven to rotate through the belt pulley two 414 when the belt pulley two rotates, at this time, and the driving shaft 410 drives the rotating screw 11 to rotate in the same direction through the plug-in connection between the first hexagonal rod 417 and the first hexagonal hole 416.

The second driving cylinder 422 drives the loop frame 423 to move downwards through the second sliding block 421, the loop frame 423 drives the limiting rotating shaft 424 to move, at this time, the second hexagonal rod 426 on the limiting rotating shaft 424 is inserted with the second hexagonal hole 425 on the rotating screw 11, and the limiting rotating shaft 424 and the rotating screw 11 rotate in the same direction, at this time, both ends of the rotating screw 11 are limited.

Referring to fig. 9, since the rotating screw 11 is in a suspended state in the test chamber 1, the rotating screw 11 is separated from the test chamber 1 when the screw driving unit 4 is not pressed against the upper and lower ends thereof, and thus the clamping and locking assembly 430 is provided to clamp and fix the rotating screw 11.

Specifically, the clamping locking assembly 430 includes clamping through grooves 431 symmetrically formed on the left and right sides of the test cavity 1, the clamping through grooves 431 are communicated with the sliding through groove 10, the rotating screw rod 11 is located in the clamping through grooves 431, symmetrically distributed abutting blocks 432 are slidably arranged in the clamping through grooves 431, and the abutting blocks 432 can fixedly clamp the rotating screw rod 11 to prevent the rotating screw rod 11 from tilting or falling when the rotating screw rod 11 is unsupported; the end, far away from the rotary screw rod 11, of the abutting block 432 is provided with a first clamping connecting rod 433, a T-shaped bracket 434 is arranged between the two first clamping connecting rods 433 and outside the test cavity 1, and the T-shaped bracket 434 can fix the whole clamping and locking unit on the test cavity 1; one end of the first clamping connecting rod 433, which is far away from the abutting block 432, is rotatably mounted on the T-shaped bracket 434 through the first rotating shaft 435, a linkage plate 436 is arranged on one side, far away from the test cavity 1, of the T-shaped bracket 434, two ends of the linkage plate 436 are rotatably mounted with the second clamping connecting rod 437, the second clamping connecting rod 437 can be fixed on the same plane through the linkage plate 436, and the second clamping connecting rod 437 can be pushed to move simultaneously.

One end of the second clamping connecting rod 437, which is away from the linkage plate 436, is rotatably arranged on the first clamping connecting rod 433 through the second rotating shaft 438, the second rotating shaft 438 is positioned on one side of the first rotating shaft 435, which is away from the testing cavity 1, the linkage plate 436 is slidably arranged on a sliding guide plate 439 fixed on the testing cavity 1, the sliding guide plate 439 can limit and guide the linkage plate 436, the linkage plate 436 is prevented from shifting in the moving process, and the abutting block 432 cannot effectively clamp and fix the rotating screw rod 11; a pushing plate 440 is connected between the two linkage plates 436, a clamping cylinder 441 for controlling the pushing plate 440 to move is arranged on the outer wall of the test cavity 1, and the clamping cylinder 441 can synchronously drive the two symmetrically distributed clamping and locking assemblies 430 to perform clamping movement through the pushing plate 440.

In a specific implementation process, when the rotating screw rod 11 is to be clamped, the clamping cylinder 441 is started, the clamping cylinder 441 drives the two linkage plates 436 to synchronously move through the pushing plate 440, the linkage plates 436 drive the clamping connecting rod two 437 to swing from the inner side to the outer side, the clamping connecting rod two 437 swings to drive the clamping connecting rod one 433 to swing from the outer side to the inner side, and the clamping connecting rod one 433 swings to drive the abutting block 432 to abut against the rotating screw rod 11.

Embodiment four:

referring to fig. 10, on the basis of the second embodiment, after one test is ended, if the PCBA board 12 that fails the test is to be separated from the PCBA placing unit 2, an electromagnetic opening and closing mechanism 5 is provided; specifically, the electromagnetic opening and closing mechanism 5 includes a first mounting plate 50 symmetrically disposed at the left and right ends of the placement plate 21, a first rotating shaft 51 is rotatably mounted between the first mounting plates 50, the first mounting plate 50 is used for mounting the first rotating shaft 51, the first rotating shaft 51 is prevented from falling, a first bearing plate 52 is mounted on the outer side surface of the first rotating shaft 51, the first bearing plate 52 corresponds to the placement slot 22 in a one-to-one manner, the first bearing plate 52 is used for bearing the corresponding PCBA board 12 placed in the placement slot 22, and the PCBA board 12 is prevented from falling in the test process.

The front end and the rear end of the placing plate 21 are symmetrically provided with a second mounting plate 53, a second rotating shaft 54 is rotatably arranged between the two front mounting plates 53 and the two rear mounting plates 53, a second bearing plate 55 is arranged on the outer side surface of the second rotating shaft 54, the second bearing plates 55 are in one-to-one correspondence with the lower end surfaces of the placing through grooves 22, electromagnetic ferrules 56 are arranged at two ends of the first rotating shaft 51 and the second rotating shaft 54, a permanent magnet plate 57 is arranged on the electromagnetic ferrules 56, and the electromagnetic ferrules 56 can fix the permanent magnet plate 57 on the first rotating shaft 51 and the second rotating shaft 54; an arc-shaped electromagnetic plate 58 with the same magnetism is arranged below the permanent magnet plate 57, and because the electromagnetic action of the permanent magnet plate 57 and the arc-shaped electromagnetic plate 58 corresponds to each other, after the permanent magnet plate 57 and the arc-shaped battery plate are electrified, the permanent magnet plate 57 drives the first rotating shaft 51 and the second rotating shaft 54 to rotate through the electromagnetic ring 56, and because the surface of the arc-shaped electromagnetic plate 58 is arc-shaped, the permanent magnet plate 57 can always perform the electromagnetic action with the arc-shaped electromagnetic plate 58 in the rotating process, and the condition that the permanent magnet plate 57 cannot drive the first rotating shaft 51 and the second rotating shaft 54 to effectively rotate due to the fact that the electromagnetic action is not strong is prevented.

The end that arc electromagnetic plate 58 kept away from permanent magnetism board 57 is provided with L type mounting bracket 59, and the one end that arc electromagnetic plate 58 was kept away from to L type mounting bracket 59 is connected with placing plate 21, and L type mounting bracket 59 is used for fixing arc electromagnetic plate 58 on placing plate 21, prevents that arc electromagnetic plate 58 from taking place the condition such as drop in electromagnetic process, installs torsional spring one (not shown in the figure) between electromagnetic ferrule 56 and mounting block 24 one, also installs torsional spring one between electromagnetic ferrule 56 and the mounting block 24 two.

In the implementation process, after the PCBA plate 12 is tested, and after the driving unit 3 is abutted to move up and reset, if the PCBA plate 12 which is not tested is to be discharged out of the testing cavity 1, the first rotating shaft 51 and the second rotating shaft 54 on the PCBA plate 12 which is not tested need to rotate under the electromagnetic action of the permanent magnet plate 57 and the arc-shaped electromagnetic plate 58, when the first rotating shaft 51 and the second rotating shaft 54 rotate, the first bearing plate 52 and the second bearing plate 55 on the outer side of the first rotating shaft and the second rotating shaft will be driven to rotate respectively, and when the first bearing plate 52 and the second bearing plate 55 under the PCBA plate 12 which is not tested rotate, the PCBA plate 12 will drop.

Referring to fig. 11 and 12, an open-close sealing unit 6 for discharging the PCBA board 12, which is not tested, out of the test cavity 1 and for providing sealing for burn-in testing and electrostatic testing is shown; specifically, the opening and closing sealing unit 6 includes a sealing rotating shaft 60 rotatably disposed on inner walls of two sides of the discharging through groove 13, the sealing rotating shaft 60 is rotatably connected with the discharging through groove 13, a sealing ring 61 is disposed on an outer side surface of the sealing rotating shaft 60, a torsion spring II (not shown in the figure) is disposed between the sealing rotating shaft 60 and the discharging through groove 13, a sealing expansion plate 62 is disposed on an outer side surface of the sealing ring 61, the sealing ring 61 is used for connecting the sealing rotating shaft 60 and the sealing expansion plate 62, and the sealing expansion plate 62 can expand and contract back and forth.

The sealing strips 63 are arranged on opposite sides of the two sealing expansion plates 62 which are vertically distributed, the sealing strips 63 correspond to the sliding through grooves 10, rubber sealing strips 64 are further arranged at one end, close to the sliding through grooves 10, of the sealing strips 63, the sealing strips 63 can drive the rubber sealing strips 64 to seal the sliding through grooves 10 on the testing cavity 1, T-shaped guide blocks 65 are arranged at the left end and the right end of the discharging through grooves 13, sealing displacement plates 66 are further arranged between the two T-shaped guide blocks 65, sealing displacement grooves 67 which are in sliding fit with the T-shaped guide blocks 65 are formed in the sealing displacement plates 66, the T-shaped guide blocks 65 are located in the sealing displacement grooves 67 on the sealing displacement plates 66, and the sealing displacement plates 66 can be limited and prevented from falling off during movement; the lower end of the T-shaped guide block 65 and the sealing displacement groove 67 are provided with sealing displacement cylinders 68, the pushing shafts of the sealing displacement cylinders 68 are connected with the lower ends of the sealing displacement grooves 67, the sealing displacement cylinders 68 can drive the sealing displacement plates 66 to move up and down, the positions of the sealing displacement plates 66 corresponding to the discharging through grooves 13 are provided with discharging grooves 69, the discharging grooves 69 are communicated with the discharging through grooves 13, and one ends, far away from the sealing ferrules 61, of the sealing expansion plates 62 are provided with sealing tightening assemblies 610.

In the specific implementation process, under the action of the torsion spring two, the two sealing expansion plates 62 which are symmetrical left and right are in an inverted V-shaped inclined state, and the sealing displacement plate 66 is controlled to move upwards through the sealing displacement cylinder 68, so that the discharge groove 69 of the sealing displacement plate 66 and the discharge through groove 13 are staggered up and down, namely, the sealing displacement plate 66 seals the discharge through groove 13, the PCBA plate 12 is in a sealed space, and the high-temperature aging test system and the static test system are ensured to test the PCBA plate 12 smoothly.

When the PCBA plate 12 that fails the test falls onto the seal expansion plate 62, since the end face of the seal expansion plate 62 after abutting is inclined, the PCBA plate 12 slides along the seal expansion plate 62 toward the discharge through groove 13, and the seal displacement plate 66 is controlled to move by the seal displacement cylinder 68, so that the discharge groove 69 and the discharge through groove 13 communicate, and further the PCBA plate 12 on the seal expansion plate 62 is ensured to be discharged through the discharge groove 69.

The sealing expansion plate 62 which is symmetrically distributed is internally provided with an existing aging test system and an existing static test system, and because the high-temperature aging test system and the static test system need a closed environment in the test process of the PCBA board 12 so as not to be influenced by external environment, when the PCBA placing unit 2 moves, the sealing expansion plate 62 swings along with the moving direction of the PCBA placing unit 2, and when the PCBA placing unit 2 moves between the aging test and the static test assembly, the sealing expansion plate 62 at the upper end is not contacted with the aging test and the static test assembly, so that the sealing expansion plate 62 at the upper end upwards rotates to an inclined initial state under the action of a torsion spring II (not shown in the drawing).

Because the upper end sealing expansion plate 62 can push the lower end sealing expansion plate 62 to rotate downwards when rotating downwards, namely when the upper end sealing expansion plate 62 rotates upwards to reset, the PCBA placing unit 2 moves upwards below the upper end sealing expansion plate 62, the lower end sealing expansion plate 62 rotates upwards to reset to an initial state, the sealing displacement cylinder 68 drives the sealing displacement plate 66 to move upwards, the discharge groove 69 on the sealing displacement plate 66 does not correspond to the discharge through groove 13, and at the moment, the discharge through groove 13 is blocked by the sealing displacement plate 66, so that the PCBA plate 12 on the PCBA placing unit 2 can be subjected to high-temperature aging test and static test.

Referring to fig. 13, after the opening and closing sealing unit 6 is closed, there is still a possibility that a gap may exist between the opening and closing sealing unit and the opening and closing sealing unit, and a seal tightening assembly 610 is provided to seal the opening and closing sealing position tightly; specifically, the seal tightening assembly 610 includes seal mounting blocks 611 symmetrically disposed on the seal expansion plate 62, a seal rotating shaft 612 is rotatably disposed between the two seal mounting blocks 611 symmetrically distributed, and the seal mounting blocks 611 can limit the seal rotating shaft 612 to prevent the seal rotating shaft 612 from separating from the seal expansion plate 62 in the rotation process; the U-shaped sealing frame 613 is arranged on the outer side face of the sealing rotating shaft 612, a torsion spring III (not shown in the figure) is arranged between the U-shaped sealing frame 613 and the sealing installation block 611, a sealing flitch 614 is arranged at one end, far away from the sealing rotating shaft 612, of the U-shaped sealing frame 613, a sealing rubber strip 615 is arranged at one end, far away from the U-shaped sealing frame 613, of the sealing flitch 614, torsion force can be applied to the sealing flitch 614 through the sealing rotating shaft 612 by the torsion spring III, the sealing rubber strip 615 on the sealing flitch 614 can be always attached, and a seam can be sealed by the rubber sealing strip 64.

Because the PCBA board 12 needs to be in a sealed environment when performing high temperature aging test and static test, the invention sets a high temperature aging test system and a static test system in the opening and closing sealing unit 6, when the PCBA placing unit 2 enters the opening and closing sealing unit 6, the sealing expansion plate 62 on the opening and closing sealing unit 6 seals the inside, the sealing and tightening assembly 610 also seals the opening and closing position tightly, the discharging sealing plate on the testing cavity 1 moves downwards to seal the discharging through groove 13.

After the high-temperature aging test and the static test are finished, the unqualified PCBA board 12 is separated from the PCBA placing unit 2 under the action of the electromagnetic opening and closing mechanism 5, falls on the sealing expansion plate 62 at the lower end and is discharged out of the test cavity 1 through the discharging through groove 13; after the test is finished, the PCBA placing unit 2 is driven by the rotating screw rod 11 to move onto the first hexagonal rod 417 of the rotating shaft on the screw rod driving unit 4, at this time, the screw rod driving unit 4 does not drive the rotating screw rod 11 any more, the rotating screw rod 11 stops rotating, the PCBA placing unit 2 stops moving downwards, the rotating screw rod 11 is clamped by the clamping and locking assembly 430 at the lower end of the test cavity 1, the first driving cylinder 402 drives the rotating shaft to move downwards, the first hexagonal rod 417 on the rotating shaft is not connected with the first hexagonal hole 416 on the rotating screw rod 11 any more, at this time, the PCBA placing unit 2 can be taken out from the lower end of the test cavity 1, then the first hexagonal rod 417 is inserted into the first hexagonal hole 416 again, and the clamping and locking assembly 430 at the lower end of the test cavity 1 releases the clamping of the rotating screw rod 11.

When the PCBA placing unit 2 is to be placed into the rotating screw 11, the rotating screw 11 is clamped by the clamping locking assembly 430 at the upper end of the testing cavity 1, the second driving cylinder 422 drives the square frame 423 to move upwards, the second hexagonal rod 426 on the limiting rotating shaft 424 is not connected with the second hexagonal hole 425 on the rotating screw 11, at this time, the PCBA placing unit 2 can be placed on the rotating screw 11, the second driving cylinder 422 controls the square frame 423 to move towards the direction of the lower end of the testing cavity 1, at this time, the second hexagonal rod 426 on the limiting rotating shaft 424 is spliced with the second hexagonal hole 425 on the rotating screw 11, at this time, the clamping locking assembly 430 at the upper end of the testing cavity 1 does not clamp the rotating screw 11 any more, and the screw driving unit 4 drives the rotating screw 11 again.

In addition, the invention also provides a PCBA testing process, which comprises the following steps:

s1: PCBA detects preparation, places PCBA board 12 that will test in PCBA places the unit 2 place through groove 22 in, installs rectangular mounting bracket 25 and carries out spacingly to PCBA board 12, and installation piece 24 on rectangular mounting bracket 25 can drive fixed subassembly 28 and carry out further support to PCBA board 12, and the electromagnetism of placing the board 21 bottom mechanism 5 that opens and shuts carries out the bearing to the bottom of PCBA board 12.

S2: and (3) vibration testing is performed, the abutting driving unit 3 is started to push the vibration detecting unit 38 to the upper side of the PCBA placing unit 2, at this time, the vibration contact block 394 on the vibration detecting unit 38 abuts against the rectangular mounting frame 25, the vibration motor 392 is started to perform vibration testing on the PCBA board 12, and after the vibration testing is completed, the PCBA board 12 is subjected to power-on testing through the PCBA testing board 381 on the rectangular board 380.

S3: aging test and static test; when the PCBA placing unit 2 moves to the upper part of the opening and closing sealing unit 6, the sealing expansion plate 62 is pushed to swing downwards until being attached to the inner side surface of the testing cavity 1, when the PCBA plate 12 enters the position of the aging test and the static test, the sealing expansion plate 62 is not pushed by the PCBA placing unit 2 any more, and is subjected to the torsion force of the torsion spring II to return to the initial position, so that sealing is completed, and at the moment, the aging test and the static test can be carried out on the PCBA plate 12.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims

1. The PCBA test platform comprises a test cavity (1), and is characterized in that: the utility model provides a test cavity (1) is controlled on the inner wall all symmetry and is offered slip logical groove (10), slip logical groove (10) interpolation is equipped with vertical extension's rotation lead screw (11), be provided with PCBA jointly on the lateral surface of all rotation lead screw (11) upper ends and place unit (2), PCBA board (12) have been placed in PCBA place unit (2), discharge logical groove (13) have all been offered to the symmetry on the inner wall around test cavity (1), rotate on discharge logical groove (13) and be provided with sealing unit (6) that open and shut, all be provided with on the control of test cavity (1) and be used for the clamp locking subassembly (430) of centre gripping rotation lead screw (11), test cavity (1) upper end is provided with and supports tight drive unit (3), the upper and lower end of test cavity (1) still is provided with lead screw drive unit (4) that are connected with rotation lead screw (11), wherein:

The PCBA placing unit (2) comprises sliding plates (20) which are arranged in the sliding through grooves (10) in a sliding mode, the sliding plates (20) are in threaded connection with the rotating screw rods (11), placing plates (21) are arranged on all the sliding plates (20) together, placing through grooves (22) which are distributed in a rectangular mode are formed in the placing plates (21), PCBA plates (12) are placed in the placing through grooves (22), fixing grooves (23) which correspond to four sides of the placing through grooves (22) are formed in the placing plates (21), fixing assemblies (28) which are used for clamping the PCBA plates (12) are further arranged at the lower ends of the fixing grooves (23), mounting blocks (24) are inserted into the fixing grooves (23), and rectangular mounting frames (25) which are connected with the mounting blocks (24) are arranged above the placing plates (21);

the rectangular mounting frame (25) is provided with a detection through groove corresponding to the placement through groove (22), the inner wall of the detection through groove is provided with a limit slat (26) corresponding to the inner wall of the placement through groove (22), the limit slat (26) is provided with a limit through groove (27), and the lower end surface of the placement plate (21) is also provided with an electromagnetic opening and closing mechanism (5).

2. A PCBA testing platform as defined in claim 1, wherein: the fixed subassembly (28) including seting up tight cavity (280) of support in fixed slot (23) lower extreme, support tight cavity (280) and fixed slot (23) and be linked together, the inside slip of fixed slot (23) is provided with fixed connecting rod one (281), the lower extreme rotation of fixed connecting rod one (281) is connected with fixed connecting rod two (282), the one end rotation that fixed connecting rod two (282) kept away from fixed connecting rod one (281) is connected with fixed block (283), the one end that fixed connecting rod two (282) were kept away from to fixed block (283) is connected with fixed spring rod (284), and the promotion end of fixed spring rod (284) passes to support tight cavity (280) and is provided with and promotes piece (285), be connected with the pressure spring that resets between fixed connecting rod one (281) lower extreme and the tight cavity (280) bottom of support.

3. A PCBA testing platform as defined in claim 1, wherein: the electromagnetic opening and closing mechanism (5) comprises first mounting plates (50) symmetrically arranged at the left end and the right end of the placing plate (21), a first rotating shaft (51) is rotatably arranged between the first mounting plates (50) at the left end and the right end, first bearing plates (52) are arranged on the outer side surfaces of the first rotating shaft (51), the first bearing plates (52) are in one-to-one correspondence with the positions of the placing through grooves (22), second mounting plates (53) are symmetrically arranged at the front end and the rear end of the placing plate (21), a second rotating shaft (54) is rotatably arranged between the second front mounting plates and the second mounting plates (53), and second bearing plates (55) are arranged on the outer side surfaces of the second rotating shaft (54);

the bearing plate II (55) corresponds to the position of the placing through groove (22) one by one, electromagnetic ferrules (56) are arranged at the two ends of the rotating shaft I (51) and the rotating shaft II (54), a permanent magnet plate (57) is arranged on the electromagnetic ferrules (56), an arc-shaped electromagnetic plate (58) with the same magnetism is arranged below the permanent magnet plate (57), an L-shaped mounting frame (59) is arranged at one end, far away from the permanent magnet plate (57), of the arc-shaped electromagnetic plate (58), the L-shaped mounting frame (59) is connected with the placing plate (21), a torsion spring I is arranged between the electromagnetic ferrules (56) and the mounting block (24), and a torsion spring I is also arranged between the electromagnetic ferrules (56) and the mounting block (24).

4. A PCBA testing platform as defined in claim 1, wherein: the opening and closing sealing unit (6) comprises sealing rotating shafts (60) which are rotatably arranged on the inner walls of two sides of the discharging through groove (13), sealing ferrules (61) are arranged on the outer side faces of the sealing rotating shafts (60), torsion springs II are arranged between the sealing rotating shafts (60) and the discharging through groove (13), sealing expansion plates (62) are arranged on the outer side faces of the sealing ferrules (61), sealing laths (63) are arranged on opposite sides of the two sealing expansion plates (62) which are vertically distributed, the sealing laths (63) correspond to the sliding through groove (10), and rubber sealing strips (64) are further arranged at one ends, close to the sliding through groove (10), of the sealing laths (63);

t-shaped guide blocks (65) are arranged at the left end and the right end of the discharging through groove (13), a sealing displacement plate (66) is further arranged between the two T-shaped guide blocks (65), a sealing displacement groove (67) which is in sliding fit with the T-shaped guide blocks (65) is formed in the sealing displacement plate (66), a sealing displacement cylinder (68) is arranged at the lower end of the T-shaped guide block (65) and located in the sealing displacement groove (67), a pushing shaft of the sealing displacement cylinder (68) is connected with the lower end of the sealing displacement groove (67), a discharging groove (69) is formed in a position, corresponding to the discharging through groove (13), of the sealing displacement plate (66), and a sealing tightening assembly (610) is arranged at one end, far away from the sealing ferrule (61), of the sealing expansion plate (62).

5. The PCBA testing platform as defined in claim 4, wherein: the sealing attaching assembly (610) comprises sealing installation blocks (611) symmetrically arranged on a sealing expansion plate (62), a sealing rotating shaft (612) is rotatably arranged between the two sealing installation blocks (611) symmetrically distributed, a U-shaped sealing frame (613) is arranged on the outer side face of the sealing rotating shaft (612), a torsion spring III is arranged between the U-shaped sealing frame (613) and the sealing installation blocks (611), one end, far away from the sealing rotating shaft (612), of the U-shaped sealing frame (613) is provided with a sealing attaching plate (614), and one end, far away from the U-shaped sealing frame (613), of the sealing attaching plate (614) is provided with a sealing rubber strip (615).

6. A PCBA testing platform as defined in claim 1, wherein: the propping driving unit (3) comprises L-shaped supporting frames (30) symmetrically arranged on the left surface and the right surface of the testing cavity (1), rectangular supporting plates (31) are arranged on opposite sides of one end, far away from the testing cavity (1), of the two L-shaped supporting frames (30), rectangular propping grooves are formed in the middle of each rectangular supporting plate (31), double-sided rack plates (32) are slidably arranged in the middle of each rectangular propping groove, limiting blocks (33) are arranged at the upper ends of the double-sided rack plates (32), propping motors (34) are further arranged on the rectangular supporting plates (31), the propping motors (34) are arranged on the rectangular supporting plates (31) through motor bases, and propping gears (35) meshed with the double-sided rack plates (32) are arranged at the output ends of the propping motors (34);

The upper end of the rectangular supporting plate (31) is further provided with a propping cylinder (36), the propping end of the propping cylinder (36) is further provided with a propping toothed plate (37) meshed with the bilateral rack plate (32), and the lower end of the bilateral rack plate (32) is further provided with a vibration detection unit (38).

7. The PCBA testing platform as defined in claim 6, wherein: the vibration detection unit (38) comprises a rectangular plate (380) arranged at the lower end of the double-sided rack plate (32), one surface of the rectangular plate (380) far away from the double-sided rack plate (32) is provided with a plurality of PCBA test plates (381) corresponding to the placement through grooves (22), the left side and the right side of the double-sided rack plate (32) are symmetrically provided with L-shaped support plates (382), the outer sides of the L-shaped support plates (382) are provided with rectangular sliding grooves (383), limiting rods (384) are arranged in the rectangular sliding grooves (383), rectangular first sliding blocks (403) are arranged on the limiting rods (384) in a sliding mode, and reset springs (386) are arranged between the rectangular first sliding blocks (403) and the tops of the rectangular sliding grooves (383);

rectangular sliding frames (390) are longitudinally slid on the L-shaped supporting plates (382), rectangular vibrating frames (391) are jointly mounted on opposite sides of the two rectangular sliding frames (390), vibrating motors (392) are symmetrically arranged on two sides of the upper ends of the rectangular vibrating frames (391), the vibrating motors (392) are mounted on the rectangular vibrating frames (391) through motor bases, cross supporting frames (393) are further arranged on the inner sides of the rectangular vibrating frames (391), vibrating contact blocks (394) which are in rectangular distribution are arranged on the lower end faces of the cross supporting frames (393) and the rectangular vibrating frames (391), and cross grooves (395) corresponding to the cross supporting frames (393) are further formed in the lower ends of the rectangular plates (380).

8. The PCBA testing platform as defined in claim 6, wherein: the screw rod driving unit (4) comprises driving supporting columns (40) symmetrically arranged at the lower end of the testing cavity (1), first sliding grooves (401) are formed in opposite sides of the two driving supporting columns (40), first driving air cylinders (402) are arranged in the first sliding grooves (401), first sliding blocks (403) sliding in the first sliding grooves (401) are arranged on pushing shafts of the first driving air cylinders (402), driving plates (404) are arranged between the two first sliding blocks (403), symmetrically distributed driving shafts (410) are respectively arranged on the left side and the right side of the driving plates (404) in a rotating mode, and the driving shafts (410) penetrate through the driving plates (404);

the lower end of the driving plate (404) is also provided with a driving motor (411), a main shaft of the driving motor (411) penetrates through the driving plate (404), two driving shafts (410) at the main shaft and the front end of the driving motor (411) are respectively provided with a belt wheel I (412), the belt wheels I (412) of the main shaft of the driving motor (411) are connected with the belt wheels I (412) on the driving shafts (410) through a transmission belt I (413), all the driving shafts (410) are also provided with belt wheels II (414), the two belt wheels II (414) at the left end are connected through a transmission belt II (415), the belt wheels II (414) at the right end are connected through a transmission belt II (415), one end, facing the driving shafts (410), of the rotating screw rod (11) is provided with a first hexagonal hole (416), and a first hexagonal rod (417) in plug-in fit with the first hexagonal hole (416) is arranged on the driving shafts (410).

Two opposite sides of L shape support frame (30) have all seted up second sliding tray (420), the second sliding tray (420) is interior to be provided with second sliding block (421), be provided with second actuating cylinder (422) that are connected with second sliding block (421) in second sliding tray (420), be provided with return shape frame (423) between two second sliding blocks (421), correspond on return shape frame (423) and rotate lead screw (11) department and install spacing pivot (424), second hexagonal hole (425) have been seted up towards the one end of spacing pivot (424) to rotate lead screw (11), install on spacing pivot (424) with second hexagonal hole (425) grafting complex second hexagonal pole (426).

9. A PCBA testing platform as defined in claim 1, wherein: the clamping and locking assembly (430) comprises clamping through grooves (431) symmetrically formed in the left surface and the right surface of the testing cavity (1), the clamping through grooves (431) are communicated with the sliding through grooves (10), the rotating screw rod (11) is located in the clamping through grooves (431), symmetrically distributed propping blocks (432) are arranged in the clamping through grooves (431) in a sliding mode, one ends, far away from the rotating screw rod (11), of the propping blocks (432) are provided with clamping connecting rods I (433), a T-shaped bracket (434) is arranged between the two clamping connecting rods I (433) and located outside the testing cavity (1), and one ends, deviating from the propping blocks (432), of the clamping connecting rods I (433) are rotatably installed on the T-shaped bracket (434) through rotating shafts I (435);

One side that test cavity (1) was kept away from to T shape support (434) is provided with linkage board (436), and clamping connecting rod two (437) are all installed in the rotation of both ends of linkage board (436), and clamping connecting rod two (437) deviate from one end of linkage board (436) and rotate through pivot two (438) and install on clamping connecting rod one (433), and pivot two (438) are located one side that pivot one (435) deviates from test cavity (1), linkage board (436) slides and sets up on fixed slip baffle (439) on test cavity (1), is connected with push plate (440) between two linkage boards (436), be provided with on the outer wall of test cavity (1) and be used for controlling the clamp cylinder (441) that push plate (440) removed.

10. A PCBA testing process comprising a PCBA testing platform as claimed in any one of claims 1 to 9, wherein the testing process comprises the steps of:

s1: the PCBA detection preparation is carried out, a PCBA board (12) to be tested is placed in a placing through groove (22) of a PCBA placing unit (2), a rectangular mounting frame (25) is mounted to limit the PCBA board (12), a mounting block (24) on the rectangular mounting frame (25) can drive a fixing assembly (28) to further tightly support the PCBA board (12), and an electromagnetic opening and closing mechanism (5) at the bottom of a placing plate (21) supports the bottom of the PCBA board (12);

S2: the vibration test is carried out, the abutting driving unit (3) is started to push the vibration detection unit (38) to the position above the PCBA placing unit (2), at the moment, the vibration contact block (394) on the vibration detection unit (38) abuts against the rectangular mounting frame (25), the vibration motor (392) is started to carry out the vibration test on the PCBA board (12), and the PCBA board 12 is tested through the PCBA test board (381) on the rectangular board (380) after the vibration test is finished;

s3: aging test and static test; when the PCBA placing unit (2) moves to the upper part of the opening and closing sealing unit (6), the sealing expansion plate (62) is pushed to swing downwards until the sealing expansion plate is attached to the inner side surface of the testing cavity (1), when the PCBA plate (12) enters the position of the aging test and the static test, the sealing expansion plate (62) is not pushed by the PCBA placing unit (2) any more, and the torsion of the torsion spring II returns to the initial position to finish sealing, and at the moment, the aging test and the static test can be performed.