CN113484550A

CN113484550A - Testing device for circuit board

Info

Publication number: CN113484550A
Application number: CN202110718162.9A
Authority: CN
Inventors: 刘燕荣
Original assignee: Chongqing Ruiyige Trading Co ltd
Current assignee: Chongqing Ruiyige Trading Co ltd
Priority date: 2021-06-28
Filing date: 2021-06-28
Publication date: 2021-10-08

Abstract

The invention belongs to the field of circuit board processing, and particularly relates to a testing device for a circuit board, which comprises a base, wherein a supporting column is fixedly connected to the upper end of the base, a shaft bracket is fixedly connected to the upper end of the supporting column, a connecting seat is hinged in the shaft bracket, a supporting table is fixedly connected to the upper end of the connecting seat, a supporting sleeve is fixedly connected to the upper end of the base, a first spring is installed in the supporting sleeve, a motor frame is fixedly connected to the upper end of the base, and a motor is fixedly connected to the upper end of the motor frame. According to the invention, the base is designed, the deflection mechanism consisting of the support column, the shaft bracket, the connecting seat and the support platform is designed on the base, the motor and the cam are installed to drive the support platform to swing, and the support sleeve and the first spring are designed on the base, so that the support platform can swing, the reliability test of the circuit board can be carried out during the test, and whether the circuit board can normally work under the vibration condition can be observed.

Description

Testing device for circuit board

Technical Field

The invention relates to the technical field of circuit board processing, in particular to a testing device for a circuit board.

Background

The circuit board is the indispensable basic device of electronic industry, prints multiple circuit on the general circuit board, and the name of circuit board has: circuit board, PCB board, aluminium base board, high frequency board, PCB, ultra-thin circuit board, printed (copper etching technology) circuit board etc.. The circuit board enables the circuit to be miniaturized and visualized, and plays an important role in batch production of fixed circuits and optimization of electric appliance layout.

In the circuit board course of working, need wash, welding, process such as test to the base plate, wherein when testing, need adopt test fixture auxiliary test for the contact pin can test with the contact of circuit board. However, the existing test tool has a single test function, can only test whether a circuit is normal, is difficult to test the aspects of high temperature resistance, reliability and the like of a circuit board, and has poor applicability.

Disclosure of Invention

The invention aims to provide a testing device for a circuit board, which solves the problems of single function, poor applicability of a clamp and the like of the existing circuit board testing tool.

In order to achieve the purpose, the invention provides the following technical scheme: the testing device for the circuit board comprises a base, wherein a supporting column is fixedly connected to the upper end of the base, an axle bracket is fixedly connected to the upper end of the supporting column, a connecting seat is hinged in the axle bracket, a supporting table is fixedly connected to the upper end of the connecting seat, a supporting sleeve is fixedly connected to the upper end of the base, a first spring is installed in the supporting sleeve, a motor frame is fixedly connected to the upper end of the base, a motor is fixedly connected to the upper end of the motor frame, a cam is fixedly installed on the outer side of a rotating shaft of the motor, and the cam is in contact with the lower end of the supporting table;

the upper end of the supporting table is fixedly connected with a box body, an electric heating lamp is fixedly installed on the inner wall of the box body, an air pump is fixedly installed at the upper end of the box body, an air inlet pipe is fixedly connected to the lower end of the air pump, the air inlet pipe penetrates through the box body, an air outlet joint is fixedly connected to the right end of the air pump, an air return pipe is fixedly installed at the tail end of the air outlet joint, and the air return pipe penetrates through the box body;

the detection device comprises a box body, a detection plate, a detection needle and a rubber sleeve, wherein the upper end of the box body is fixedly provided with an air cylinder, the lower end of an air cylinder rod of the air cylinder is provided with a connecting sleeve, the lower end of the connecting sleeve is fixedly connected with a mounting frame, the inside of the mounting frame is provided with the detection plate, the lower end of the detection plate is provided with the detection needle, and the outer side of the detection needle is bonded with the rubber sleeve;

a threaded rod is rotatably connected in the box body, a gear is fixedly mounted on the outer side of the threaded rod and is in contact with the inner wall of the box body, an adjusting frame is connected to the outer side of the threaded rod through threads, a clamping seat is fixedly connected to the upper end of the adjusting frame, and a circuit board is clamped in the clamping seat;

the inner wall fixedly connected with guide block of box, set up the guiding hole in the guide block, sliding connection has the guide arm in the guiding hole, the second spring has been cup jointed in the outside of guide arm, the lower extreme fixedly connected with latch of guide arm, the lower extreme joint of latch has the gear.

Preferably, the upper end of the first spring is in contact with the support table, and the lower end of the first spring is in contact with the base.

Preferably, the front end of the box body is hinged with a box door, and the box door is provided with an observation window.

Preferably, the upper end of the box body is provided with a through groove, and an air cylinder rod is connected in the through groove in a sliding mode.

Preferably, the connecting sleeve is connected with a first bolt in a sliding mode, and the first bolt is connected with the air cylinder rod through threads.

Preferably, a second bolt is connected in the mounting frame in a sliding mode and is in threaded connection with the detection plate.

Preferably, a through hole is formed in the side wall of the box body, and a threaded rod is rotatably connected in the through hole.

Preferably, the tail end of the threaded rod is fixedly connected with a knob, and the knob is in contact with the outer surface of the box body.

Preferably, the lower end of the adjusting frame is fixedly connected with a sliding block, and the sliding block is connected with the supporting table in a sliding mode.

Preferably, the upper end of the second spring is in contact with the guide block, and the lower end of the second spring is in contact with the latch.

Compared with the prior art, the invention has the following beneficial effects:

1. according to the invention, the base is designed, the deflection mechanism consisting of the support column, the shaft bracket, the connecting seat and the support platform is designed on the base, the motor and the cam are installed to drive the support platform to swing, and the support sleeve and the first spring are designed on the base, so that the support platform can swing, the reliability test of the circuit board can be carried out during the test, and whether the circuit board can normally work under the vibration condition can be observed.

2. According to the invention, the box body is designed on the supporting platform, the air cylinder is arranged on the box body to drive the mounting frame and the detection plate to move downwards, the detection pin is designed at the bottom of the detection plate, the rubber sleeve is designed on the outer side of the detection pin, the circuit board can be clamped when the detection pin is in contact with the circuit board, a certain protection effect on the circuit board can be realized, the use is convenient, the detection damage is small, and the positioning is firm.

3. According to the invention, the electric heating lamp is arranged in the box body for supplying heat, so that the circuit board is in a high-temperature environment, and the air pump, the air inlet pipe, the air outlet pipe and the air return pipe are designed to form the air circulation device, so that the air flow in the box body can be improved, the temperature at each position is more uniform, and the reliability of the circuit board in the high-temperature environment can be conveniently tested.

4. According to the invention, the threaded rod, the adjusting frame, the sliding block, the clamping seat and other parts are designed to form the clamping device, the circuit board is clamped, and the position of the clamping seat can be adjusted by rotating the threaded rod and matching the threaded rod with the adjusting frame, so that the adjustment is realized, the circuit boards with different specifications can be conveniently clamped, and the applicability of the clamp is better.

5. According to the invention, the guide block, the guide rod, the second spring and the latch are designed on the inner wall of the box body to form the positioning device, the gear is designed on the outer side of the threaded rod, and the threaded rod can be positioned through the matching of the gear and the latch, so that the threaded rod cannot rotate due to vibration after being adjusted, and the clamp is more stable.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a cross-sectional view of the case of FIG. 1 in accordance with the present invention;

FIG. 3 is an enlarged view of the portion A of FIG. 2 according to the present invention;

FIG. 4 is an enlarged view of the portion B of FIG. 2 according to the present invention;

FIG. 5 is a top view of the cartridge of FIG. 2 in accordance with the present invention;

FIG. 6 is a side view of the gear of FIG. 3 in accordance with the present invention;

FIG. 7 is a side view of the pedestal of FIG. 1 in accordance with the present invention;

FIG. 8 is a schematic structural diagram of an embodiment of the present invention;

fig. 9 is a schematic structural diagram of an embodiment of the present invention.

In the figure: 1. a base; 2. a support pillar; 3. a pedestal; 4. a connecting seat; 5. a support table; 6. a support sleeve; 7. a first spring; 8. a motor frame; 9. an electric motor; 10. a cam; 11. a box body; 12. a box door; 13. an observation window; 14. an electric heating lamp; 15. an air pump; 16. an air inlet pipe; 17. an air outlet joint; 18. an air return pipe; 19. a through groove; 20. a cylinder; 21. a cylinder rod; 22. connecting sleeves; 23. a first bolt; 24. a mounting frame; 25. detecting a plate; 26. a second bolt; 27. a detection pin; 28. a rubber sleeve; 29. a through hole; 30. a threaded rod; 31. a knob; 32. a gear; 33. an adjusting bracket; 34. a slider; 35. a card holder; 36. a circuit board; 37. a guide block; 38. a guide hole; 39. a guide bar; 40. a second spring; 41. the device comprises a latch 42, a detection plate driving cylinder 43, a fixed rod 44, a movable rod 45, a fixed rod blind hole 46, a butting ring 47, a positioning needle 48, a positioning head 49, a third spring 50 and a threaded hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Examples

Referring to fig. 1-7, the testing device for the circuit board comprises a base 1, wherein a supporting column 2 is fixedly connected to the upper end of the base 1, a shaft bracket 3 is fixedly connected to the upper end of the supporting column 2, a connecting seat 4 is hinged in the shaft bracket 3, a supporting table 5 is fixedly connected to the upper end of the connecting seat 4, a supporting sleeve 6 is fixedly connected to the upper end of the base 1, a first spring 7 is installed in the supporting sleeve 6, a motor bracket 8 is fixedly connected to the upper end of the base 1, a motor 9 is fixedly connected to the upper end of the motor bracket 8, a cam 10 is fixedly installed on the outer side of a rotating shaft of the motor 9, and the cam 10 is in contact with the lower end of the supporting table 5;

the upper end of the supporting table 5 is fixedly connected with a box body 11, an electric heating lamp 14 is fixedly installed on the inner wall of the box body 11, an air pump 15 is fixedly installed at the upper end of the box body 11, an air inlet pipe 16 is fixedly connected to the lower end of the air pump 15, the air inlet pipe 16 penetrates through the box body 11, an air outlet joint 17 is fixedly connected to the right end of the air pump 15, an air return pipe 18 is fixedly installed at the tail end of the air outlet joint 17, and the air return pipe 18 penetrates through the box body 11;

an air cylinder 20 is fixedly installed at the upper end of the box body 11, a connecting sleeve 22 is installed at the lower end of an air cylinder rod 21 of the air cylinder 20, an installation frame 24 is fixedly connected to the lower end of the connecting sleeve 22, a detection plate 25 is installed inside the installation frame 24, a detection needle 27 is arranged at the lower end of the detection plate 25, and a rubber sleeve 28 is bonded to the outer side of the detection needle 27;

a threaded rod 30 is rotatably connected in the box body 11, a gear 32 is fixedly installed on the outer side of the threaded rod 30, the gear 32 is in contact with the inner wall of the box body 11, the outer side of the threaded rod 30 is connected with an adjusting frame 33 through threads, the upper end of the adjusting frame 33 is fixedly connected with a clamping seat 35, and a circuit board 36 is clamped in the clamping seat 35;

the inner wall of the box body 11 is fixedly connected with a guide block 37, a guide hole 38 is formed in the guide block 37, a guide rod 39 is connected in the guide hole 38 in a sliding mode, a second spring 40 is sleeved on the outer side of the guide rod 39, a latch 41 is fixedly connected to the lower end of the guide rod 39, and a gear 32 is clamped to the lower end of the latch 41.

Referring to fig. 1, the upper end of the first spring 7 contacts the supporting platform 5, and the lower end of the first spring 7 contacts the base 1. The first spring 7 has an elastic function and can stretch.

Referring to fig. 1, a box door 12 is hinged to the front end of a box body 11, and an observation window 13 is disposed on the box door 12. Through the design of chamber door 12, conveniently open box 11, observation window 13 is transparent glass, can observe the inside condition.

Referring to fig. 2, a through groove 19 is formed at the upper end of the box body 11, and a cylinder rod 21 is slidably connected in the through groove 19. Through the design of the through slot 19, a moving space is provided for the cylinder rod 21.

Referring to fig. 2, a first bolt 23 is slidably connected in the connecting sleeve 22, and the first bolt 23 is connected with the cylinder rod 21 through a thread. The connecting sleeve 22 and the cylinder rod 21 are conveniently and fixedly arranged through the installation of the first bolt 23,

referring to fig. 4, a second bolt 26 is slidably connected in the mounting frame 24, and the second bolt 26 is threadedly connected to the detecting plate 25. The detection plate 25 can be fixedly installed in the installation frame 24 by installing the second bolt 26, and the detection plate 25 belongs to the prior art.

Referring to fig. 3, a through hole 29 is formed in a side wall of the box 11, and a threaded rod 30 is rotatably connected to the through hole 29. By the design of the through hole 29, a turning space is provided for the threaded rod 30.

Referring to fig. 3, a knob 31 is fixedly connected to the end of the threaded rod 30, and the knob 31 contacts the outer surface of the box body 11. By the design of the knob 31, the threaded rod 30 is convenient to rotate.

Referring to fig. 2, a sliding block 34 is fixedly connected to the lower end of the adjusting frame 33, and the sliding block 34 is slidably connected to the supporting table 5. The adjusting bracket 33 is supported by the design of the slider 34, and the slider 34 can slide on the supporting table 5.

Referring to fig. 3, the upper end of the second spring 40 contacts the guide block 37, and the lower end of the second spring 40 contacts and is connected with a latch 41. The second spring 40 has elasticity such that the latch 41 grips the gear 32.

The specific implementation process of the invention is as follows: when the circuit board 36 needs to be clamped, the box door 12 is opened, the circuit board 36 is placed in the two clamping seats 35, the cylinder 20 is started, the cylinder rod 21 of the cylinder 20 moves downwards, the cylinder rod 21 drives the connecting sleeve 22 to move downwards, the connecting sleeve 22 drives the mounting frame 24 to move downwards, the mounting frame 24 drives the detection plate 25 to move downwards, the detection plate 25 drives the detection pin 27 to move downwards, the detection pin 27 contacts the circuit board 36 to perform detection work, the rubber sleeve 28 on the outer side of the detection pin 27 contacts the circuit board 36 to press the circuit board 36, and quick clamping of the circuit board 36 is realized while detection is performed;

when no problem exists in the preliminary detection, the electric heating lamp 14 is started, the electric heating lamp 14 works to generate heat, the air pump 15 is started at the same time, the air pump 15 sucks air through the air inlet pipe 16, and after the air in the box body 11 is sucked out, the air flows back through the air outlet joint 17 and the air return pipe 18 to realize air circulation, so that the air flow in the box body 11 flows, the temperature difference is small, and the high-temperature resistance test is facilitated;

after the high temperature resistance test is finished, the electric heating lamp 14 is turned off, the air pump 15 is turned off, then the motor 9 is started, the rotating shaft of the motor 9 drives the cam 10 to rotate, due to the special structure of the cam 10, a longitudinal displacement difference can be generated during rotation, so that the supporting table 5 can be jacked up, the supporting table 5 can be reset under the action of the first spring 7, so that the supporting table 5 can swing back and forth, the box body 11 vibrates, the circuit board 36 installed in the box body 11 can be subjected to vibration reliability test, and the functions are various;

when the position of cassette 35 needs to be adjusted, upward movement guide rod 39, guide rod 39 drives latch 41 upward movement, make latch 41 leave gear 32, then rotate knob 31, knob 31 drives threaded rod 30 and rotates, threaded rod 30 takes place the screw motion with alignment jig 33, produce relative displacement, make alignment jig 33 remove, alignment jig 33 drives cassette 35 and moves, realize the position control of cassette 35, be convenient for the circuit board 36 of the different specifications of clamping, after cassette 35 has adjusted the position, release guide rod 39, under the compression elasticity effect of second spring 40, latch 41 resets, chucking gear 32, thereby realize gear 32's location, make threaded rod 30 unable rotation, stability is better.

As shown in fig. 8 to 9, in order to simulate a fixed scene when the circuit board 36 is used, a detection plate driving cylinder 42 may be disposed on the mounting frame 24, an output end of the detection plate driving cylinder is connected to the detection plate 25, the detection pin 27 is disposed at a lower end of the detection plate 25, and the rubber sleeve 28 is adhered to an outer side of the detection pin 27;

the bottom end of the mounting frame 24 is also provided with a positioning elastic component penetrating through the detection plate 25, the positioning elastic component comprises a fixed rod 43 and a movable rod 44, the bottom end part of the fixed rod 43 is provided with a fixed rod blind hole 45 with a small opening and a large inner cavity, the top end part of the movable rod 44 penetrates through the opening of the blind hole 45, the top end part of the movable rod 44 is connected with an abutting ring 46 capable of being matched with the fixed rod blind hole 45, the abutting ring 46 can move up and down relative to the fixed rod blind hole 45, the bottom end part of the movable rod 44 is provided with a positioning needle 47, and the positioning needle 47 is provided with a positioning head 48 with a rod diameter larger than the outer diameter of the positioning needle 47;

still be provided with third spring 49 in the dead lever blind hole 45, the upper and lower both ends of third spring 49 butt respectively on the top of dead lever blind hole 45 and the top of butt ring 46 for: the positioning pin 47 is located at an extreme position away from the fixing rod 43.

In application, the circuit board 36 is usually provided with a threaded hole 50 for fixing, the positioning pin 47 can be placed in the threaded hole 50, and the positioning head 48 can abut against the circuit board 36. When the detection pin 27 needs to be used for detection, the mounting frame 24 is moved downwards through the air cylinder 20, so that the positioning pin 47 is placed in the threaded hole 50, the positioning head 48 abuts against the circuit board 36 to fix the circuit board 36, and then the detection board driving air cylinder 42 is started to move the detection board 25 downwards, so that the detection pin 27 can contact with a specific area of the circuit board 36 to perform detection work.

When a vibration reliability test is carried out, the positioning pin 47 and the positioning head 48 are also used for positioning the circuit board 36, so that the fixing condition of the circuit board 36 in application can be simulated, and the vibration resistance of the circuit board can be better detected.

Wherein, the stability of the up-and-down movement of the detection plate 25 can be improved by the arrangement of the fixing rod 43. The third spring 49 is arranged to buffer the impact between the positioning head 48 and the circuit board 36, and stabilize the downward pressure of the positioning head 48 on the circuit board 36.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Testing arrangement for circuit board, including base (1), its characterized in that: the upper end of the base (1) is fixedly connected with a supporting column (2), the upper end of the supporting column (2) is fixedly connected with a shaft bracket (3), a connecting seat (4) is hinged in the shaft bracket (3), the upper end of the connecting seat (4) is fixedly connected with a supporting table (5), the upper end of the base (1) is fixedly connected with a supporting sleeve (6), a first spring (7) is installed in the supporting sleeve (6), the upper end of the base (1) is fixedly connected with a motor frame (8), the upper end of the motor frame (8) is fixedly connected with a motor (9), a cam (10) is fixedly installed on the outer side of a rotating shaft of the motor (9), and the cam (10) is in contact with the lower end of the supporting table (5);

the upper end of the supporting table (5) is fixedly connected with a box body (11), an electric heating lamp (14) is fixedly installed on the inner wall of the box body (11), an air pump (15) is fixedly installed on the upper end of the box body (11), an air inlet pipe (16) is fixedly connected to the lower end of the air pump (15), the air inlet pipe (16) penetrates through the box body (11), an air outlet connector (17) is fixedly connected to the right end of the air pump (15), an air return pipe (18) is fixedly installed at the tail end of the air outlet connector (17), and the air return pipe (18) penetrates through the box body (11);

an air cylinder (20) is fixedly mounted at the upper end of the box body (11), a connecting sleeve (22) is mounted at the lower end of an air cylinder rod (21) of the air cylinder (20), a mounting frame (24) is fixedly connected to the lower end of the connecting sleeve (22), a detection plate (25) is mounted inside the mounting frame (24), a detection needle (27) is arranged at the lower end of the detection plate (25), and a rubber sleeve (28) is bonded to the outer side of the detection needle (27);

a threaded rod (30) is rotatably connected in the box body (11), a gear (32) is fixedly installed on the outer side of the threaded rod (30), the gear (32) is in contact with the inner wall of the box body (11), the outer side of the threaded rod (30) is connected with an adjusting frame (33) through threads, the upper end of the adjusting frame (33) is fixedly connected with a clamping seat (35), and a circuit board (36) is clamped in the clamping seat (35);

the inner wall fixedly connected with guide block (37) of box (11), guide hole (38) have been seted up in guide block (37), sliding connection has guide arm (39) in guide hole (38), second spring (40) have been cup jointed in the outside of guide arm (39), the lower extreme fixedly connected with latch (41) of guide arm (39), the lower extreme joint of latch (41) has gear (32).

2. The test device for a wiring board according to claim 1, characterized in that: the upper end of the first spring (7) is in contact with the support table (5), and the lower end of the first spring (7) is in contact with the base (1).

3. The test device for a wiring board according to claim 1, characterized in that: the front end of the box body (11) is hinged with a box door (12), and the box door (12) is provided with an observation window (13).

4. The test device for a wiring board according to claim 1, characterized in that: the upper end of the box body (11) is provided with a through groove (19), and a cylinder rod (21) is connected in the through groove (19) in a sliding mode.

5. The test device for a wiring board according to claim 1, characterized in that: the connecting sleeve (22) is connected with a first bolt (23) in a sliding mode, and the first bolt (23) is connected with the cylinder rod (21) through threads.

6. The test device for a wiring board according to claim 1, characterized in that: and a second bolt (26) is connected in the mounting frame (24) in a sliding manner, and the second bolt (26) is in threaded connection with the detection plate (25).

7. The test device for a wiring board according to claim 1, characterized in that: a through hole (29) is formed in the side wall of the box body (11), and a threaded rod (30) is rotatably connected to the through hole (29).

8. The test device for a wiring board according to claim 1, characterized in that: the tail end of the threaded rod (30) is fixedly connected with a knob (31), and the knob (31) is in contact with the outer surface of the box body (11).

9. The test device for a wiring board according to claim 1, characterized in that: the lower end of the adjusting frame (33) is fixedly connected with a sliding block (34), and the sliding block (34) is connected with the supporting table (5) in a sliding mode.

10. The test device for a wiring board according to claim 1, characterized in that: the upper end of the second spring (40) is in contact with the guide block (37), and the lower end of the second spring (40) is in contact connection with a latch (41).