CN209215534U - PCBA test device - Google Patents

Abstract

The utility model relates to the field of testing, in particular to a PCBA testing device, comprising: a test frame and a first telescopic mechanism and a second telescopic mechanism respectively arranged on the top and bottom of the test frame; From top to bottom, a first installation mechanism and a second installation mechanism moving along its vertical direction are provided in sequence. Needle bed tooling is arranged between the first installation mechanism and the second installation mechanism. The top of the first installation mechanism is connected to the first installation mechanism. Connected by a telescopic mechanism, the bottom of the first installation mechanism is detachably connected to the board to be tested, the top of the second installation mechanism is detachably connected to the test board, the bottom of the second installation mechanism is connected to the second telescopic mechanism, and the test board is connected to a display device , the needle bed tooling is provided with probes for connecting the board to be tested and the test board. The utility model has beneficial effects: the degree of automation is high, and the test efficiency is improved; the design cost, tool storage space and tool maintenance cost are saved.

Description

PCBA test device

technical field

The utility model relates to the testing field, in particular to a PCBA testing device.

Background technique

With the rapid development of electronic industry automation, a large number of various programmable chips were born. PCBA (Printed Circuit Board Assembly) is also a PCB empty board, after SMT (surface mount technology) parts, and then through the entire process of DIP plug-ins. After the PCB is assembled, its performance needs to be tested to prevent the PCBA from malfunctioning due to errors, leakage, reverse, short, virtual, etc. of electronic components during the manufacturing process, so as to determine whether the PCBA is qualified.

One of the commonly used methods for PCBA testing is to use the test probe bed tooling. The basic principle of the PCBA test bed of needle tooling is to lead the test points of the test board through the test probes of the tooling to the board to be tested, and pass the test probes to the test board. Specific test points provide test signals, and read output signals through specific test points to determine whether the board to be tested is working in a normal state.

The traditional needle bed tooling is to manually connect the test board and the board to be tested through the test probe, and the test efficiency is low. In addition, the traditional bed of needles test tooling is one-to-one, that is, one tooling corresponds to one PCBA. When there are too many types of PCBA products, using traditional needle bed tooling for testing requires high design costs, tooling storage space, and tooling maintenance costs.

Utility model content

In order to solve the above problems, the utility model proposes a PCBA testing device to improve testing efficiency and save costs.

The PCBA testing device comprises: a test frame and a first telescopic mechanism and a second telescopic mechanism respectively arranged on the top and bottom of the test frame; The first installation mechanism and the second installation mechanism moving in the vertical direction are provided with needle bed tooling between the first installation mechanism and the second installation mechanism. The top of the first installation mechanism is connected with the first telescopic mechanism, and the first installation mechanism The bottom of the mechanism is detachably connected to the board to be tested, the top of the second installation mechanism is detachably connected to the test board, the bottom of the second installation mechanism is connected to the second telescopic mechanism, the test board is connected to a display device, and the needle bed The tooling is provided with probes for connecting the board to be tested and the test board.

Preferably, the first installation mechanism includes a first installation plate, on both sides of the first installation plate there are first pulleys matched with the guide rails, and on the bottom of the first installation plate there is a mounting plate for installing the board to be tested. groove.

Preferably, the second installation mechanism includes a second installation plate, on both sides of the second installation plate there are second pulleys matched with the guide rails, on the top of the second installation plate there is a bracket for installing the test board .

Preferably, the needle bed tooling includes a third mounting plate, third pulleys matched with guide rails are provided on both sides of the third mounting plate, and springs are connected to the top and bottom of the third pulleys.

Preferably, several sockets for installing probes are provided on the third mounting plate.

Preferably, an upper fixture is provided in the guide rail between the first mounting plate and the needle bed tooling, and the installation height of the upper fixing piece is lower than the top of the probe; between the second mounting plate and the needle bed tooling A lower fixing part is arranged in the guide rail between them, and the installation height of the lower fixing part is higher than the bottom of the probe.

The utility model can realize following effects:

1. The first mounting plate, the needle bed tooling, and the second mounting plate are connected and disassembled through the first telescopic mechanism and the second telescopic mechanism, which has a high degree of automation and improves the test efficiency;

2. The first installation board and the second installation board are respectively connected to the board to be tested and the test board through detachable connection, which facilitates the replacement of the board to be tested and the test board, and improves the test efficiency;

3. There are a number of jacks for installing probes on the third mounting board, and the corresponding jacks are selected according to the test requirements to plug in the probes, so that a variety of boards to be tested can be tested with one needle bed tooling, Save design cost, tooling storage space and tooling maintenance cost.

Description of drawings

Below in conjunction with accompanying drawing and specific embodiment, the utility model is described in further detail.

Fig. 1 is the overall structure schematic diagram in the utility model embodiment;

Fig. 2 is a schematic structural view of the third mounting plate in the embodiment of the present invention.

Among them, 1-test frame, 11-guide rail, 111-upper fixing part, 112-lower fixing part, 2-first telescopic mechanism, 3-second telescopic mechanism, 4-first installation mechanism, 41-first installation plate , 42-first pulley, 43-installation groove, 5-needle bed tooling, 51-installation plate, 511-jack, 52-third pulley, 53-spring, 54-probe, 6-second installation mechanism, 61-the second mounting plate, 62-the second pulley, 63-bracket, 7-display device.

Detailed ways

The technical solution of the utility model will be further described below in conjunction with the accompanying drawings, but the utility model is not limited to these embodiments.

In conjunction with accompanying drawing 1, the utility model provides a kind of PCBA testing device, comprises: test frame 1, is provided with first expansion mechanism 2, second expansion mechanism 3, first installation mechanism 4, Needle bed frock 5, second installation mechanism 6.

Wherein, the test frame includes guide rails 11 arranged vertically, and in this embodiment, there are four guide rails. The first telescopic mechanism and the second telescopic mechanism are respectively arranged on the top and the bottom of the test frame, and the test frame is provided with control buttons for controlling the movement of the first telescopic mechanism and the second telescopic mechanism. A first installation mechanism and a second installation mechanism moving along its vertical direction are sequentially arranged on the guide rail from top to bottom. The needle bed tool is installed between the first installation mechanism and the second installation mechanism. The first telescopic mechanism is connected, the bottom of the first installation mechanism is detachably connected to the board to be tested, the top of the second installation mechanism is detachably connected to the test board, the bottom of the second installation mechanism is connected to the second telescopic mechanism, and the test board is connected to a display device 7. The needle bed tooling is equipped with probes for connecting the board to be tested and the test board.

The test board and the board to be tested involve multiple functional circuits and at least one programmable chip. The DSP program is respectively written in the programmable chip of the board to be tested and the test board, and is transmitted by the sampling circuit of the signal sent and received in the board to be tested and the test board. For the programmable chip, judge whether the circuit to be boarded on the test board is valid. It should be noted that the DSP program in this embodiment is the prior art, and it is also the prior art to realize whether the circuit under test is valid by writing the DSP into the programmable chip on the test board and the board under test.

In this embodiment, the first telescopic mechanism and the second telescopic mechanism both use telescopic air cylinders, and the movement of the telescopic air cylinders is controlled by control buttons. The first telescopic mechanism and the second telescopic mechanism can also be replaced by other telescopic mechanisms.

The first installation mechanism includes a first installation board 41, on both sides of the first installation board there are first pulleys 42 matched with the guide rails, and on the bottom of the first installation board there is an installation groove 43 for installing the board to be tested. Through the connection mode between the pulley and the guide rail, the first installation mechanism can move up and down on the guide rail. The installation groove is designed to facilitate the installation and removal of the board to be tested.

The second installation mechanism includes a second installation board 61, on both sides of the second installation board there are second pulleys 62 matched with the guide rails, on the top of the second installation board there is a bracket 63 for installing the test board. Through the connection mode of the pulley and the guide rail, the second installation mechanism can move up and down on the guide rail. The bracket is designed to facilitate the installation and removal of the test board.

The needle bed tooling includes a third mounting plate 51 , on both sides of the third mounting plate there are third pulleys 52 matched with the guide rails, and springs 53 are connected to the top and bottom of the third pulleys. In order to reduce the buffer when the probe is connected to the board to be tested and the test board, springs are connected to the top and bottom of the third pulley, which avoids the impact on the probe, The board under test and the test board are damaged.

The third installation board is provided with a plurality of sockets 511 for installing the probes 54 . Select the corresponding socket plug-in probe according to the test requirements, so that a variety of boards to be tested can be tested with one needle bed tooling, saving design costs, tooling storage space, and tooling maintenance costs.

In order to avoid excessive operation of the first telescopic mechanism and the second telescopic mechanism, the board to be tested and the test board are too tightly connected or even damaged. An upper fixture 111 is arranged in the guide rail between the first mounting plate and the needle bed frock, and the installation height of the upper fixture is slightly lower than the top of the probe; between the second mounting plate and the needle bed frock A lower fixing part 112 is arranged inside the guide rail, and the installation height of the lower fixing part is slightly higher than the bottom of the probe. The upper fixing piece and the lower fixing piece are used to limit the position of the first pulley and the second pulley. The test board is connected with the test board, so as to limit the position of the first installation mechanism and the second installation mechanism.

The working process of this embodiment is as follows: first, install the board to be tested and the test board in the first installation mechanism and the second installation mechanism respectively, select the socket on the third installation board to insert the probe according to the test requirements, and use the control button to Control the extension of the first telescopic mechanism and the second telescopic mechanism, so that the board to be tested and the test board are connected through probes. The programmable chip on the board to be tested and the test board realizes the detection of the output and input of the circuit to be tested on the board to be tested, and the detection results are displayed on the display device. After the test is completed, the first telescopic mechanism and the second telescopic mechanism are controlled to shorten by the control button, the board to be tested is separated from the test board, and then the board to be tested and the test board are taken out from the first installation mechanism and the second installation mechanism respectively.

Those skilled in the technical field to which the utility model belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, but they will not deviate from the spirit of the utility model or go beyond the appended claims defined range.

Claims (6)

1.PCBA test device characterized by comprising testing jig and what is be respectively arranged at the top and bottom of testing jig first stretch Contracting mechanism, the second telescoping mechanism, the testing jig include vertically disposed guide rail, are successively arranged from top to bottom on guide rail along it The first installing mechanism, the second installing mechanism of movement in vertical direction are equipped with needle between the first installing mechanism, the second installing mechanism Bed tooling, the top of first installing mechanism are connect with the first telescoping mechanism, and the bottom of the first installing mechanism is detachably connected Board under test, the top side detachable connecting test plate of second installing mechanism, the bottom of the second installing mechanism and the second telescopic machine Structure connection, the test board are connected with display device, and the needle bed tooling is equipped with the spy for connecting board under test and test board Needle.

2. PCBA test device according to claim 1, which is characterized in that first installing mechanism includes the first installation Plate is equipped with the first pulley matched with guide rail in the two sides of the first mounting plate, is equipped in the bottom of the first mounting plate for pacifying Fill the mounting groove of board under test.

3. PCBA test device according to claim 2, which is characterized in that second installing mechanism includes the second installation Plate is equipped with the second pulley matched with guide rail in the two sides of the second mounting plate, is equipped at the top of the second mounting plate for pacifying Fill the bracket of test board.

4. PCBA test device according to claim 1, which is characterized in that the needle bed tooling includes third mounting plate, The two sides of the third mounting plate are equipped with the third pulley matched with guide rail, are all connected at the top and bottom of the third pulley There is spring.

5. PCBA test device according to claim 4, which is characterized in that the third mounting plate is equipped with several be used for The jack of probe is installed.

6. PCBA test device according to claim 3, which is characterized in that first mounting plate and needle bed tooling it Between guide rail in be equipped with upper fixing element, the mounting height of fixed part is lower than probe tip；Second mounting plate with Lower fixing piece is equipped in guide rail between needle bed tooling, the mounting height of the lower fixing piece is higher than probe base.