CN212749142U

CN212749142U - Circuit board test fixture

Info

Publication number: CN212749142U
Application number: CN202020694140.4U
Authority: CN
Inventors: 李页仔; 管良才; 黎海波; 杨进权; 赵伟林; 刘锦昌; 牛安
Original assignee: Zhuhai Bojay Electronics Co Ltd
Current assignee: Zhuhai Bojay Electronics Co Ltd
Priority date: 2020-04-29
Filing date: 2020-04-29
Publication date: 2021-03-19
Anticipated expiration: 2030-04-29

Abstract

The utility model discloses a circuit board test fixture, including test base, calibration mechanism and test mechanism, be equipped with the test groove that is used for holding the work piece on the test base, calibration mechanism includes camera, keysets drive assembly, the keysets is equipped with the calibration point, the camera is used for shooting and transmitting image signal to the work piece on the test base; the adapter plate driving assembly is used for driving the adapter plate to move according to the image signal so as to enable the calibration point on the calibration plate to correspond to the test point of the workpiece; the test mechanism comprises a test board and a test board driving assembly, wherein the test board driving assembly is used for driving the test board to be pressed on the calibration board and the workpiece. The utility model discloses a circuit board test fixture, it can counterpoint the test, improves the measuring accuracy.

Description

Circuit board test fixture

Technical Field

The utility model relates to a circuit board production facility technical field especially relates to a circuit board test fixture.

Background

At present, with the popularization of electronic devices, circuit boards are increasingly applied to various electronic devices, so that the circuit boards are produced in large quantities, and when the circuit boards are produced, the circuit performance of the circuit boards generally needs to be detected to prevent defective products. Taking the FPC flexible board as an example, when performing ICT (mainly used for checking faults of components and devices) and FCT (electrical and electronic functionality test) functional tests, after the interposer is electrically connected to the FPC flexible board, the test circuit performs a test to see whether the FPC flexible board has a fault. However, the existing test tool is not accurate enough in connection and positioning between the adapter plate and the FPC flexible printed circuit board, and errors are easy to occur, so that the test efficiency and the test quality are low.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide a circuit board testing jig, it can carry out the counterpoint test, improves the measuring accuracy.

The purpose of the utility model is realized by adopting the following technical scheme:

a circuit board test fixture comprises a test base, a calibration mechanism and a test mechanism, wherein a test slot for accommodating a workpiece is arranged on the test base, the calibration mechanism comprises a camera, a patch panel and a patch panel driving assembly, the patch panel is provided with calibration points, and the camera is used for shooting the workpiece on the test base and transmitting an image signal; the adapter plate driving assembly is used for driving the adapter plate to move according to the image signal so as to enable the calibration point on the calibration plate to correspond to the test point of the workpiece; the test mechanism comprises a test board and a test board driving assembly, wherein the test board driving assembly is used for driving the test board to be pressed on the calibration board and the workpiece.

Furthermore, the adapter plate driving assembly comprises a first electric sliding table and a second electric sliding table, the first electric sliding table is arranged along the X-axis direction, and the second electric sliding table is arranged on the sliding table of the first electric sliding table; the second electric sliding table is arranged along the Y-axis direction; the adapter plate is synchronously connected with the sliding table of the second electric sliding table.

Furthermore, the adapter plate driving assembly further comprises an adapter seat and an adapter seat driving piece, the adapter seat and the adapter seat driving piece are both installed on the sliding table of the second electric sliding table, and the adapter seat driving piece is used for driving the adapter seat to wind the Z axis; the adapter plate is arranged on the adapter seat.

Furthermore, the test board driving assembly comprises a motor, a screw rod, a nut and a guide piece, wherein the screw rod is synchronously connected with a rotating shaft of the motor; the screw rod extends along the Z-axis direction; the nut is sleeved outside the screw rod and moves along the extension direction of the screw rod under the guidance of the guide piece; the test board is synchronously connected with the nut.

Further, the guide piece comprises a guide sleeve and a guide rod, and the guide rod extends along the Z-axis direction; the guide rods are connected with the test board.

Furthermore, the circuit board test fixture further comprises a test base driving mechanism, and the test base driving mechanism is used for driving the test base to move along the Z-axis direction.

Compared with the prior art, the beneficial effects of the utility model reside in that: the test board is used for testing a circuit board, the circuit board can be placed in the test groove, the adapter plate driving assembly can drive the adapter plate to move, the calibration point on the adapter plate corresponds to the test point on the circuit board, and the test board can be tested by pressing down the test board, so that automatic alignment test is realized, and the test precision is improved.

Drawings

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

FIG. 2 is a schematic view of a partial structure of the present invention;

FIG. 3 is a schematic view of an assembly structure of the testing base and the calibration mechanism of the present invention;

fig. 4 is a schematic structural view of the testing base of the present invention;

fig. 5 is a schematic structural diagram of the calibration mechanism of the present invention.

In the figure: 10. testing the base; 20. a calibration mechanism; 21. an adapter plate; 22. an adapter plate drive assembly; 23. a driving member of the adapter; 24. a camera; 25. a transfer seat; 30. a test board; 40. testing the base driving mechanism; 50. the test board drives the component.

Detailed Description

The invention will be further described with reference to the accompanying drawings and specific embodiments:

a circuit board testing fixture as shown in fig. 1 to 5 includes a testing base 10, an alignment mechanism 20, and a testing mechanism, wherein a testing slot is disposed on the testing base 10, and the testing slot is used for accommodating a workpiece. The specific calibration mechanism 20 comprises a camera 24, an adapter plate 21 and an adapter plate driving assembly 22, wherein calibration points are arranged on the adapter plate 21, and the camera 24 can shoot a workpiece on the test base 10 and transmit an image signal. The adapter plate driving component 22 can drive the adapter plate 21 to move according to the image signal, so that the calibration point on the calibration plate corresponds to the test point of the workpiece. In addition, the testing mechanism includes a testing board 30 and a testing board driving assembly 50, and the testing board driving assembly 50 can drive the testing board 30 to press-contact the calibration board and the workpiece.

On the basis of the structure, use the utility model discloses a during circuit board test fixture, can place the circuit board that awaits measuring in test groove, adapter plate drive assembly 22 can drive the motion of adapter plate 21 afterwards, makes calibration point on the adapter plate 21 correspond with the test point on the circuit board, surveys test panel drive assembly 50 cocoa drive and surveys test panel 30 downstream, survey on survey test panel 30 alright crimping adapter plate 21 and the circuit board that awaits measuring, test, can realize automatic counterpoint test, improve the measuring accuracy.

It should be noted that the interposer 21 and the test board 30 in the present embodiment can be selected from a test circuit commonly used in the prior art for use with a circuit board, and a specific test structure and a test principle can be known by those skilled in the art from the prior art, and are not described in detail herein.

Further, the adapter plate driving assembly 22 further includes a first electric sliding table and a second electric sliding table, the first electric sliding table is disposed along the X-axis direction, the second electric sliding table is disposed on the sliding table of the first electric sliding table, and the second electric sliding table is disposed along the Y-axis direction. The adapter plate 21 is synchronously connected with the sliding table of the second electric sliding table, so that the first electric sliding table and the second electric sliding table can display the positions of the calibration point of the adapter plate 21 and the test point on the circuit board according to the image signal transmitted by the camera 24, and the adapter plate 21 can move in the X-axis direction and the Y-axis direction, namely, move left and right and back and forth, so that the calibration point of the adapter plate 21 corresponds to the test point on the circuit board.

Further, the adapter plate driving assembly 22 further includes an adapter 25 and an adapter driving member 23, the adapter 25 and the adapter driving member 23 are both mounted on the sliding table of the second electric sliding table, and the adapter driving member 23 is configured to drive the adapter 25 to wind the Z axis; the adapter plate 21 is mounted on the adapter 25. So, can control, the seesaw at adapter 25 under the drive of first electronic slip table and the electronic slip table of second, control, after the seesaw, the calibration point of keysets 21 and the test point on the circuit board probably do not correspond yet, therefore accessible keysets 25 drive assembly drive keysets 25 and rotate around the Z axle, so keysets 21 can swing in the horizontal direction, can further adjust the position of the calibration point of keysets 21 and the test point of circuit board, the position corresponds more accurately.

It should be noted that the above-mentioned driving assembly of the adapter 25 can be implemented by a motor in the prior art.

Further, the test board driving assembly 50 includes a motor, a screw rod, a nut, and a guide member, and the screw rod can be synchronously coupled to a rotation shaft of the motor, and the screw rod extends along the Z-axis direction; the nut is sleeved outside the screw rod and moves along the extension direction of the screw rod under the guidance of the guide piece; the test plate 30 is synchronously coupled with the nuts. Therefore, when the test board 30 is driven to move up and down, the motor can be started, the rotating shaft of the motor rotates to drive the screw rod to rotate, the screw rod rotates to drive the nut to rotate, the rotating motion of the nut can be converted into linear motion along the extension direction of the screw rod under the guide of the guide piece, the nut can move up and down, and the test board 30 synchronously connected with the nut can move up and down.

Further, the guide piece comprises a guide sleeve and a guide rod, and the guide rod extends along the Z-axis direction; the guide bar is connected to the test board 30 and the guide sleeve is fixed to the outer body so that the guide bar slides along the guide sleeve when the screw rod rotates and the nut is restricted by the guide sleeve to move up and down.

Of course, the test board driving assembly 50 can also be realized by other linear motion output mechanisms such as air cylinders and electric slides in the prior art.

Furthermore, the circuit board testing jig further comprises a testing base driving mechanism 40, wherein the testing base driving mechanism 40 can drive the testing base 10 to move along the Z-axis direction, so that the testing base 10 can be driven to move up and down through the testing base driving mechanism 40, and the testing point of the circuit board on the testing base 10 is electrically connected with the calibration point of the adapter plate 21.

Certainly, test base actuating mechanism 40 is realized by other linear motion output mechanism such as cylinder and electronic slip table among the prior art, in addition, under the circumstances that does not have test base actuating mechanism 40, can set up the electronic slip table of third on the electronic slip table of above-mentioned second, and the electronic slip table of third can be followed the Z axle direction and set up, and it can to drive keysets 21 up-and-down motion.

Various other modifications and changes may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes are intended to fall within the scope of the claims.

Claims

1. A circuit board test fixture is characterized by comprising a test base, a calibration mechanism and a test mechanism, wherein a test slot for accommodating a workpiece is arranged on the test base, the calibration mechanism comprises a camera, a patch panel and a patch panel driving assembly, the patch panel is provided with a calibration point, and the camera is used for shooting the workpiece on the test base and transmitting an image signal; the adapter plate driving assembly is used for driving the adapter plate to move according to the image signal so as to enable the calibration point on the calibration plate to correspond to the test point of the workpiece; the test mechanism comprises a test board and a test board driving assembly, wherein the test board driving assembly is used for driving the test board to be pressed on the calibration board and the workpiece.

2. The circuit board testing jig according to claim 1, wherein the interposer drive assembly includes a first electric slide table and a second electric slide table, the first electric slide table is disposed along the X-axis direction, and the second electric slide table is disposed on the slide table of the first electric slide table; the second electric sliding table is arranged along the Y-axis direction; the adapter plate is synchronously connected with the sliding table of the second electric sliding table.

3. The circuit board testing jig according to claim 2, wherein the interposer drive assembly further comprises an interposer and an interposer drive member, the interposer and the interposer drive member are both mounted on the slide table of the second electric slide table, and the interposer drive member is configured to drive the interposer around the Z-axis; the adapter plate is arranged on the adapter seat.

4. The apparatus of claim 1, wherein the test board driving assembly comprises a motor, a screw, a nut, and a guide member, the screw being synchronously coupled to a shaft of the motor; the screw rod extends along the Z-axis direction; the nut is sleeved outside the screw rod and moves along the extension direction of the screw rod under the guidance of the guide piece; the test board is synchronously connected with the nut.

5. The apparatus of claim 4, wherein the guide member comprises a guide sleeve and a guide rod, the guide rod extends along the Z-axis direction; the guide rods are connected with the test board.

6. The apparatus of claim 1, further comprising a driving mechanism for the testing base, wherein the driving mechanism is used to drive the testing base to move along the Z-axis direction.