CN213658915U

CN213658915U - Test fixture of circuit board

Info

Publication number: CN213658915U
Application number: CN202022826786.6U
Authority: CN
Inventors: 金星; 崔德鑫; 韩玉栓; 巨志豪
Original assignee: Zhejiang Lingxi Electronic Co Ltd
Current assignee: Zhejiang Lingxi Electronic Co Ltd
Priority date: 2020-11-30
Filing date: 2020-11-30
Publication date: 2021-07-09
Anticipated expiration: 2030-11-30

Abstract

The utility model relates to a test fixture of circuit board, including blowing platform, testboard and probe seat, be equipped with a plurality of probes down on the probe seat, be connected with first cylinder on the up end of probe seat, the testboard is located between blowing platform and the probe seat, the below of testboard is equipped with and is used for driving the testboard to rotate the slewing mechanism below the probe seat, be equipped with material transfer mechanism between blowing platform and the testboard, the workman can place a certain amount of circuit board on blowing platform, and material transfer mechanism can transfer the circuit board on the blowing platform to the testboard in single form automatically, and slewing mechanism makes the testboard rotate to the below of probe seat after the circuit board reachs the testboard, and first cylinder drives jar probe seat to move downwards again and detects, and after accomplishing the detection, the workman takes off the circuit board, slewing mechanism drives the testboard again and rotates and resets, the utility model discloses workman's intensity of labour can be reduced, production efficiency has been improved.

Description

Test fixture of circuit board

Technical Field

The utility model relates to a test equipment, especially a test fixture of circuit board.

Background

After the conventional circuit board is produced and assembled, a product needs to be tested, but the existing test equipment needs to put the circuit boards on the test fixture one by one, and under the condition that the circuit boards needing to be detected are more, the labor intensity of workers is higher, so that the test efficiency is lower.

SUMMERY OF THE UTILITY MODEL

The utility model provides a test fixture of circuit board, it can place the testboard with the circuit board automatically and detect, has reduced workman's intensity of labour, has improved production efficiency, has solved the above-mentioned problem that exists among the prior art in the use.

The technical scheme of the utility model is realized like this: the utility model discloses a blowing platform, testboard and probe seat, be equipped with a plurality of probes down on the probe seat, be connected with first cylinder on the up end of probe seat, the testboard is located between blowing platform and the probe seat, the below of testboard is equipped with and is used for driving the testboard and rotates the slewing mechanism of probe seat below, be equipped with the material transfer mechanism between blowing platform and the testboard.

Preferably, the rotating mechanism comprises a rotating motor, a rotating track and a sliding block, the rotating motor is connected to the lower end face of the test board close to one side of the probe seat, the sliding block is connected to the lower end face of the other side of the test board, the sliding block is matched with the rotating track, the rotating track is semicircular, and the rotating track is the same as the rotating track of the sliding block when the rotating motor drives the test board to rotate below the probe seat.

Preferably, the material transfer mechanism comprises a cross-shaped connecting frame, a suction nozzle, a first telescopic column, four connecting rods, a first connecting rod, a second connecting rod, a third connecting rod, a mounting seat, a first gear, a second gear, a toothed belt and a driving motor, the four suction nozzles are arranged downwards and are respectively connected to the four ends of the connecting frame, the lower end of the first telescopic column is connected with the connecting frame, the upper end of the first telescopic column is connected with the connecting rod, the connecting rod is fixedly connected to the first connecting rod, the second connecting rod and the third connecting rod are respectively connected to the two ends of the first connecting rod in a rotating manner, the other end of the second connecting rod is connected to the mounting seat in a rotating manner through a first rotating shaft, the other end of the third connecting rod is connected to the mounting seat in a rotating manner through a second rotating shaft, the first gear is connected to the first rotating shaft, and the second gear is connected to the second rotating shaft, the toothed belt is meshed between the first gear and the second gear, and the driving motor is connected with the first gear.

Preferably, the first telescopic column is sleeved with a first spring, the lower end of the first spring abuts against the connecting frame, and the upper end of the first spring abuts against the connecting rod.

Preferably, circuit board four corners reference column all is equipped with on blowing platform and the testboard.

Preferably, a pressing plate is arranged below the probe seat, the pressing plate is connected with the probe seat through at least four second telescopic columns, a second spring is sleeved on each second telescopic column, the upper end and the lower end of each second spring are respectively abutted against the probe seat and the pressing plate, the pressing plate is located below the probe under the condition that the second telescopic columns naturally extend out, and a through hole for the probe to penetrate through is formed in the pressing plate.

Preferably, the pressing plate is further provided with positioning holes for matching with the four-corner positioning columns.

Preferably, a lower abutting plate is arranged below the pressing plate, and a second cylinder is connected below the lower abutting plate.

To sum up, the beneficial effects of the utility model reside in that:

1. the workman is using the utility model discloses the time, can place an amount of circuit board at the blowing bench, material transfer mechanism can shift the circuit board on the blowing bench with solitary form automatically to the testboard, slewing mechanism is after the circuit board reachs the testboard, begin to drive the testboard and rotate, make the testboard rotate the below of probe seat, first cylinder drives the probe seat downstream again, thereby make the probe detect the circuit board, accomplish the measuring back, the workman takes off the circuit board, slewing mechanism drives the testboard again and rotates and reset, material transfer mechanism shifts a circuit board on the blowing bench to the testboard again, so always circulate, can reduce workman's intensity of labour, and the production efficiency is improved.

2. The rotating mechanism drives the test board to rotate through the rotating motor, and the rotating track is arranged, so that the test board can rotate more stably and reliably, and the position of the test board below the probe seat can be rotated more accurately.

3. The material shifts the mechanism and drives first gear through driving motor and rotates, first gear makes the synchronous rotation of second gear through the cingulum, first gear can control second connecting rod and third connecting rod respectively with the second gear and swing, thereby make first connecting rod move with the orbit of pitch arc, consequently the suction nozzle also can remove to the testboard from the blowing platform with this orbit on, the suction nozzle can hold the circuit board on the blowing platform, then when removing to the testboard, put down the circuit board, thereby just reach the purpose that shifts the single circuit board from the blowing platform to the testboard. Wherein the suction nozzle is connected on the connecting rod through first flexible post, and the connecting rod is connected with first connecting rod again, and when the circuit board of blowing bench was higher, behind the circuit board was inhaled to the suction nozzle, probably first connecting rod still can drive the connecting rod and continue downstream, and first flexible post can compress first spring and shorten like this to can not cause the damage of circuit board, later first spring can recover first flexible post.

4. The four-corner positioning column can enable the circuit board to be placed at a designated position on the test board, so that the accuracy of the circuit board detection by the follow-up probe is improved.

5. When the probe seat moves downwards, the pressing and holding plate below the probe seat can be firstly contacted with the circuit board to form pressing and holding on the circuit board, the stability of the circuit board during testing is enhanced, then the probe seat continues to move downwards, the second telescopic column compresses the second spring to shorten, so that the probe penetrates through a through hole in the pressing and holding plate and is contacted with the circuit board to be tested, and a positioning hole in the pressing and holding plate is matched with positioning columns at four corners of the circuit board, so that the accuracy degree of the circuit board detection by the probe can be enhanced.

6. The lower supporting plate can move upwards through the second cylinder and is supported on the lower end face of the test board, when the pressing plate is pressed on the circuit board, the test board can be pushed downwards by force, the structure of the rotating track can be protected through the lower supporting plate, and the rotating track cannot deform due to long-term stress.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic view of a first three-dimensional structure of the present invention;

fig. 2 is a schematic view of a second three-dimensional structure of the present invention.

In the figure: 1. a discharge table; 2. a test bench; 3. a probe base; 4. a probe; 5. a first cylinder; 6. rotating the motor; 7. rotating the rail; 8. a slider; 9. a connecting frame; 10. a suction nozzle; 11. a first telescopic column; 12. a connecting rod; 13. a first link; 14. a second link; 15. a third link; 16. a mounting seat; 17. a first gear; 18. a second gear; 19. a toothed belt; 20. a drive motor; 21. a first rotating shaft; 22. a second rotating shaft; 23. a first spring; 24. positioning columns at four corners of the circuit board; 25. pressing and holding the plate; 26. a second telescopic column; 27. a second spring; 28. a through hole; 29. positioning holes; 30. a lower holding plate; 31. a second cylinder.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to fig. 1 and 2 of the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Examples

As shown in fig. 1 and 2, the utility model discloses a test fixture of circuit board, including blowing platform 1, testboard 2 and probe seat 3, be equipped with a plurality of probes 4 down on the probe seat 3, be connected with first cylinder 5 on the up end of probe seat 3, testboard 2 is located between blowing platform 1 and the probe seat 3, the below of testboard 2 is equipped with and is used for driving testboard 2 to rotate the slewing mechanism of probe seat 3 below, be equipped with the material that is used for shifting the circuit board from blowing platform 1 to testboard 2 between blowing platform 1 and the testboard 2 and shift the mechanism.

The rotating mechanism comprises a rotating motor 6, a rotating track 7 and a sliding block 8, the rotating motor 6 is connected to the lower end face of one side, close to the probe base 3, of the test board 2, the sliding block 8 is connected to the lower end face of the other side of the test board 2, the sliding block 8 is matched with the rotating track 7, the rotating track 7 is semicircular, and the rotating track 7 and the rotating track 8 are the same when the rotating motor 6 drives the test board 2 to rotate below the probe base 3.

The material transfer mechanism comprises a cross-shaped connecting frame 9, a suction nozzle 10, a first telescopic column 11, a connecting rod 12, a first connecting rod 13, a second connecting rod 14, a third connecting rod 15, a mounting seat 16, a first gear 17, a second gear 18, a toothed belt 19 and a driving motor 20, wherein the suction nozzle 10 is provided with four downward parts and is respectively connected to four ends of the connecting frame 9, the lower end of the first telescopic column 11 is connected with the connecting frame 9, the upper end of the first telescopic column 11 is connected with the connecting rod 12, the connecting rod 12 is fixedly connected to the first connecting rod 13, the second connecting rod 14 and the third connecting rod 15 are respectively rotatably connected to two ends of the first connecting rod 13, the other end of the second connecting rod 14 is rotatably connected to the mounting seat 16 through a first rotating shaft 21, the other end of the third connecting rod 15 is rotatably connected to the mounting seat 16 through a second rotating shaft 22, the first gear 17 is connected with a first rotating shaft 21, the second gear 18 is connected with a second rotating shaft 22, the toothed belt 19 is arranged between the first gear 17 and the second gear 18 in a meshed mode, and the driving motor 20 is connected with the first gear 17.

The utility model discloses a theory of operation: a worker can place a certain amount of circuit boards on the discharging platform 1, the material transfer mechanism drives the first gear 17 to rotate through the driving motor 20, the first gear 17 enables the second gear 18 to synchronously rotate through the toothed belt 19, the first gear 17 and the second gear 18 can respectively control the second connecting rod 14 and the third connecting rod 15 to swing, so that the first connecting rod 13 moves in an arc track, the suction nozzle 10 can also move to the test platform 2 from the discharging platform 1 like the track, the suction nozzle 10 can suck the circuit boards on the discharging platform 1, then when moving to the test platform 2, the circuit boards are put down, so that the purpose of transferring the single circuit boards from the discharging platform 1 to the test platform 2 is achieved, and the rotating mechanism drives the test platform 2 to rotate through the rotating motor 6 after the circuit boards reach the test platform 2, so that the test platform 2 rotates below the probe seat 3, the first air cylinder 5 drives the probe seat 3 to move downwards, so that the probe 4 detects the circuit board, after detection is completed, a worker takes off the circuit board, the rotating motor 6 drives the test board 2 to rotate and reset, and the material transfer mechanism transfers the circuit board on the discharging platform 1 to the test board 2, so that the operation is repeated all the time, the labor intensity of the worker can be reduced, and the production efficiency is improved.

Foretell first flexible post 11 has flexible function to the cover is equipped with first spring 23 on first flexible post 11, the lower extreme of first spring 23 supports and holds on link 9, the upper end of first spring 23 supports and holds on connecting rod 12, because suction nozzle 10 is connected on connecting rod 12 through first flexible post 11, connecting rod 12 is connected with first connecting rod 13 again, when the accumulational higher time of circuit board on blowing platform 1, suction nozzle 10 holds the circuit board after, first connecting rod 13 probably still can drive connecting rod 12 and continue the downstream, first flexible post 11 alright shorten with compressing first spring 23 like this, thereby can not cause the damage of circuit board, later first spring 23 can recover first flexible post 11.

In order to enhance the accuracy of the position of the circuit board when the circuit board is placed on the test bench 2, circuit board four-corner positioning posts 24 are arranged on the material placing bench 1 and the test bench 2.

In the utility model, a pressing plate 25 is arranged below the probe base 3, the pressing plate 25 is connected with the probe base 3 through at least four second telescopic columns 26, a second spring 27 is sleeved on the second telescopic columns 26, the upper and lower ends of the second spring 27 are respectively supported on the probe base 3 and the pressing plate 25, the pressing plate 25 is positioned below the probe 4 under the condition that the second telescopic columns 26 naturally extend out, a through hole 28 for the probe 4 to penetrate out is arranged on the pressing plate 25, by the above structure, when the probe base 3 moves downwards, the pressing plate 25 below the probe base 3 can firstly contact with the circuit board to form a pressing hold on the circuit board, so as to enhance the stability of the circuit board during testing, then the probe base 3 continuously moves downwards, so that the second telescopic columns 26 press the second spring 27 to shorten, thereby the probe 4 penetrates out through the through hole 28 on the pressing plate 25, and contacting with a circuit board for testing.

The pressing plate 25 is further provided with a positioning hole 29 used for being matched with the four-corner positioning column, and the positioning hole 29 is matched with the four-corner positioning column 24 of the circuit board, so that the accuracy of the circuit board detection by the probe 4 can be enhanced.

The utility model discloses in, the below of holding board 25 is equipped with down to holding board 30 to the pressure, the below of holding board 30 is connected with second cylinder 31 down, when holding board 25 pressure and holding on the circuit board to the pressure, has a power and promotes testboard 2 downwards, and testboard 2 can be acted on rotating track 7 with the power, at this moment supports down to holding board 30 and upwards removes through second cylinder 31, supports to holding on the lower terminal surface of testboard 2, can protect rotating track 7's structure like this, makes rotating track 7 can not produce because of long-term atress and warp.

The utility model that should point out simultaneously indicates the terminology, like: the directional or positional relationships indicated as "front", "rear", "vertical", "horizontal", etc. are based on the directional or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but are not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the scope of the invention.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a test fixture of circuit board which characterized in that: including blowing platform (1), testboard (2) and probe seat (3), be equipped with a plurality of probes (4) down on probe seat (3), be connected with first cylinder (5) on the up end of probe seat (3), testboard (2) are located between blowing platform (1) and probe seat (3), the below of testboard (2) is equipped with and is used for driving testboard (2) to rotate the slewing mechanism of probe seat (3) below, be equipped with material transfer mechanism between blowing platform (1) and testboard (2).

2. The test fixture for circuit boards of claim 1, wherein: the rotating mechanism comprises a rotating motor (6), a rotating rail (7) and a sliding block (8), the rotating motor (6) is connected to the lower end face, close to one side of the probe seat (3), of the test board (2), the sliding block (8) is connected to the lower end face of the other side of the test board (2), the sliding block (8) is matched with the rotating rail (7), the rotating rail (7) is semicircular, and the rotating track (7) is the same as the rotating track of the sliding block (8) when the rotating motor (6) drives the test board (2) to rotate to the lower side of the probe seat (3).

3. The test fixture for circuit boards of claim 1, wherein: the material transfer mechanism comprises a cross-shaped connecting frame (9), a suction nozzle (10), a first telescopic column (11), a connecting rod (12), a first connecting rod (13), a second connecting rod (14), a third connecting rod (15), a mounting seat (16), a first gear (17), a second gear (18), a toothed belt (19) and a driving motor (20), wherein the suction nozzle (10) is provided with four downward ends and is respectively connected to four ends of the connecting frame (9), the lower end of the first telescopic column (11) is connected with the connecting frame (9), the upper end of the first telescopic column (11) is connected with the connecting rod (12), the connecting rod (12) is fixedly connected onto the first connecting rod (13), the second connecting rod (14) and the third connecting rod (15) are respectively connected onto two ends of the first connecting rod (13) in a rotating manner, the other end of the second connecting rod (14) is connected onto the mounting seat (16) in a rotating manner through a first rotating shaft (21), the other end of the third connecting rod (15) is rotatably connected to the mounting base (16) through a second rotating shaft (22), the first gear (17) is connected with the first rotating shaft (21), the second gear (18) is connected with the second rotating shaft (22), the toothed belt (19) is meshed between the first gear (17) and the second gear (18), and the driving motor (20) is connected with the first gear (17).

4. The test fixture of a circuit board of claim 3, wherein: the first telescopic column (11) is sleeved with a first spring (23), the lower end of the first spring (23) abuts against the connecting frame (9), and the upper end of the first spring (23) abuts against the connecting rod (12).

5. The test fixture for circuit boards of claim 1, wherein: and circuit board four-corner positioning columns (24) are arranged on the material placing platform (1) and the test platform (2).

6. The test fixture of claim 5, wherein: the probe base is characterized in that a pressing and holding plate (25) is arranged below the probe base (3), the pressing and holding plate (25) is connected with the probe base (3) through at least four second telescopic columns (26), second springs (27) are sleeved on the second telescopic columns (26), the upper ends and the lower ends of the second springs (27) are respectively abutted to the probe base (3) and the pressing and holding plate (25), the pressing and holding plate (25) is located below the probe (4) under the condition that the second telescopic columns (26) naturally extend out, and through holes (28) through which the probe (4) can penetrate are formed in the pressing and holding plate (25).

7. The test fixture of claim 6, wherein: and the pressing plate (25) is also provided with a positioning hole (29) matched with the four-corner positioning column.

8. The test fixture of a circuit board of claim 7, wherein: a lower abutting plate (30) is arranged below the pressing plate (25), and a second cylinder (31) is connected below the lower abutting plate (30).