TWM555476U - PCBA board signal comparison equipment - Google Patents

Description

PCBA board signal comparison equipment

This creation is about a PCBA board inspection device, especially a signal comparison device through the PCBA board.

PCBA is the abbreviation of Printed Circuit Board+Assembly in English, which means that the PCB blank board passes through the SMT upper part, and then passes through the whole process of DIP plug-in, referred to as PCBA. In order to ensure the quality of the final product, the PCBA board produced should be tested. The existing test method can not accurately test the normality of each signal on the PCBA board, which affects the overall quality of the product.

Therefore, in order to effectively solve the above problems, the main purpose of the present invention is to provide a PCBA board signal comparison device, which can accurately test the function of the signal points on the PCBA board one by one.

In order to achieve the above purpose, the present invention provides a PCBA board signal comparison device, which comprises a base, a detecting probe, a fixture fixing seat, a control device and a space three-dimensional direction for detecting probes and fixing seats. a displacement device for relative displacement; the displacement device has a linear displacement device for providing a linear displacement of the fixture holder and a plane displacement device capable of providing a plane displacement for the detection probe, the linear displacement device being disposed on the base The surface displacement device is disposed directly above the upper surface of the base, the fixture fixing seat is disposed on the linear displacement device, and the detection probe is disposed on the plane displacement device, and the treatment is A moving linear trajectory having a fixed seat on the linear displacement device is perpendicular to a planar trajectory of the detecting probe movable on the planar displacement device, and the control device stores a normal detection signal of the tested PCBA board and a tested PCBA The position information of the signal points on the board, the control device is connected to the displacement device.

In an embodiment, the linear displacement device is a Y-axis slide, the planar displacement device includes two Z-axis brackets and an X-axis, the two Z-axis brackets are vertically disposed on the base, and the X-axis can be The upper and lower slides are mounted between the two Z-axis brackets, and the Y-axis slide rails are fixedly disposed on the upper surface of the base, and the Y-axis slide rails are perpendicular to the projection of the X-axis on the base.

In one embodiment, a horizontally slidable probe fixing arm is mounted on the X horizontal axis, and the probe is fixed to the probe fixing arm, and the needle of the probe is opposite to the upper surface of the base.

In an embodiment, the displacement device is provided with a linear transmission mechanism.

In an embodiment, the linear transmission mechanism is any one of a rack and pinion transmission mechanism, a screw nut transmission mechanism, a belt transmission mechanism, or a chain transmission mechanism.

In an embodiment, the fixture fixing seat is provided with a positioning hole.

In an embodiment, the number of the positioning holes is at least three.

Through the design of this creation, it can automatically and accurately test the signal points on the PCBA board, and can test different types of PCBA boards, and the application range is wide and accurate.

1‧‧‧Probe fixed arm

2‧‧‧X horizontal axis

3‧‧‧Z-axis bracket

4‧‧‧Y-axis slide

5‧‧‧Base

6‧‧‧ probe

7‧‧‧ fixture holder

71‧‧‧Positioning holes

8‧‧‧displacement device

8A‧‧‧Linear displacement device

8B‧‧‧ Planar displacement device

9‧‧‧Control device

The first picture is the structure diagram of the signal comparison equipment of the PCBA board created by the author; the second figure is the structure diagram of the signal comparison equipment of the creation PCBA board.

The above object of the present invention, as well as its structural and functional features, will be described in accordance with the preferred embodiments of the drawings.

Please refer to Figures 1 and 2 for the structure diagram and structure diagram of the PCBA board signal comparison equipment. As shown in the figure, a PCBA board signal comparison equipment includes a base 5 and a signal for testing the PCBA board. a probe 6, a fixture holder 7, a control device 9 and a displacement device 8, the displacement device 8 being capable of providing relative displacement in the three-dimensional direction of the probe 6 and the fixture holder 7; the displacement device 8 The utility model has a linear displacement device 8A for providing linear displacement of the fixture fixing seat 7 and a plane displacement device 8B capable of providing a plane displacement of the probe 6. The linear displacement device 8A is a Y-axis slide rail 4, the plane The displacement device 8B includes two Z-axis brackets 3 and an X-axis 2, and the linear displacement device 8A is disposed on the upper surface of the base 5, and the plane displacement device 8B is disposed directly above the upper surface of the base 5. That is, the two Z-axis brackets 3 are perpendicular to the base 5 and are respectively disposed opposite to the edge of the base 5, and the X-axis 2 is disposed between the two Z-axis brackets 3 and located above the base 5. The X horizontal axis 2 can be slid up and down between the two Z-axis brackets. Y-axis rail system 4 is fixed on the base surface 5 and the projector 2 in the horizontal axis on the base 5 with the form of X perpendicular.

The X-axis 2 is mounted with a horizontally slidable probe fixing arm 1 , and the probe 6 is fixedly coupled to the probe fixing arm 1 . The needle of the probe 6 is opposite to the upper surface of the base 5 .

A linear transmission mechanism is disposed in the displacement device 8 to drive the fixture holder 7 and the probe fixing arm 1 to move. In the present embodiment, the rack and pinion transmission mechanism will be described, but it is not limited thereto, and other such as the screw nut transmission mechanism, the belt transmission mechanism or the chain transmission mechanism can be used as the linear transmission mechanism of the present invention.

The jig fixing base 7 is, for example, a PCBA plate fixing seat, but is not limited thereto. The jig fixing base 7 is slidably disposed on the Y-axis slide rail 4, so that the jig fixing base 7 is in the linear displacement device 8A. The moving linear trajectory is perpendicular to the plane trajectory of the aforementioned probe 6 movable on the plane displacement device 8B, and the fixture is solid The fixing seat 7 has four positioning holes 71 for fixing the PCBA board fixing fixture to be tested, and the type of the fixture can be replaced according to the shape and structure of the PCBA board to be tested, and only the lower surface of the fixture and the fixture are needed. The positioning hole 71 of the fixing base 7 can be fixed and fixed.

The control device 9 stores a normal detection signal of the PCBA board under test and a position information of a signal point on the PCBA to be tested. The control device 9 can control the movement of the probe fixing arm 1 in the X-axis direction by identifying the signal point position information of the PCBA board, and the X-axis 2 is displaced in the Z-axis direction, and the fixture fixing seat 7 is The Y-axis slide 4 (that is, the displacement in the Y-axis direction) is used to control the probe 6 to be aligned with each signal point on the PCBA board under test, and then the detection signal and the control device 9 obtained by testing each signal point are tested. The normal detection signal is compared. If the signal is abnormal, the PCBA board is taken down and placed in the defective area. All the detection signals are good if they are good. The following are the actual steps:

S1: First place the PCBA board: select the fixing fixture suitable for the PCBA board to be tested, and then fix the fixture to the fixture fixing seat 7 through the positioning hole 71 on the fixture fixing seat 7, and place it on the fixture. Measuring PCBA board;

S2: Input data: The CAD file of the signal point distribution information of the PCBA board to be tested is input into the control device 9, and the normal detection signal data of each signal point to be tested is transmitted to the control device 9.

S3: performing the test: the control device 9 controls the movement of the probe 6 and the fixture holder 7 in the directions of the X horizontal axis 2, the Y axis slide 4 and the Z axis support 3 to test, and then test signals and The normal signals of the corresponding points in the control device 9 are compared. If they are inconsistent, the product is a defective product, and it is taken out into the defective product area, and then the next one is tested until all the PCBA boards of the same specification are tested.

The present invention has been described in detail above, but the above description is only a preferred embodiment of the present invention, and the scope of the present invention cannot be limited. That is, all changes and modifications made in accordance with the scope of this creation application shall remain covered by the patents of this creation.

1‧‧‧Probe fixed arm

2‧‧‧X horizontal axis

3‧‧‧Z-axis bracket

4‧‧‧Y-axis slide

5‧‧‧Base

6‧‧‧ probe

7‧‧‧ fixture holder

71‧‧‧Positioning holes

8‧‧‧displacement device

8A‧‧‧Linear displacement device

8B‧‧‧ Planar displacement device

9‧‧‧Control device

Claims (7)

A PCBA board signal comparison device includes a base, a probe for testing a PCBA board signal, a fixture holder, a control device, and a space 3D direction for the probe and the fixture holder a displacement device for relative displacement, the displacement device having a linear displacement device for providing linear displacement of the fixture holder and a plane displacement device for providing planar displacement of the probe, the linear displacement device being disposed on the base In the upper surface, the planar displacement device is disposed directly above the upper surface of the base, the fixture fixing seat is disposed on the linear displacement device, and the probe is disposed on the planar displacement device, wherein the fixture fixing seat is disposed on the planar displacement device The linear trajectory of the linear displacement device is perpendicular to a plane trajectory of the probe movable on the plane displacement device. The control device stores a normal detection signal of the tested PCBA board and a position of a signal point on the PCBA board to be tested. Information, the control device controls the connection to the displacement device. The PCBA board signal comparison device according to claim 1, wherein the linear displacement device is a Y-axis slide rail, and the plane displacement device comprises two Z-axis brackets and an X-axis bracket, wherein the two Z-axis brackets are vertically disposed on The X horizontal axis is slidably mounted between the two Z-axis brackets, the Y-axis rail is fixedly disposed on the upper surface of the base, and the Y-axis rail and the X-axis are in the The projection on the base is vertical. The PCBA board signal comparison device according to claim 2, wherein the X horizontal axis is mounted with a horizontally slidable probe fixing arm, and the probe is fixed to the probe fixing arm, and the probe needle is directly The upper surface of the base. The PCBA board signal comparison device according to claim 2, wherein the displacement device is provided with a linear transmission mechanism. The PCBA board signal comparison device according to claim 4, wherein the linear transmission mechanism is any one of a rack and pinion transmission mechanism, a screw nut transmission mechanism, a belt transmission mechanism or a chain transmission mechanism. The PCBA board signal comparison device according to claim 1, wherein the fixture fixing seat is provided with a positioning hole. The PCBA board signal comparison device according to claim 6, wherein the number of the positioning holes is at least three.