PCBA board test fixture

Abstract

The utility model discloses a kind of PCBA board test fixture, including test box, X direction sliding assembly, Y direction adjusting assembly, PCB plate ontology, test fixture assembly and second clamping assembly, the inside of test box is installed with X direction sliding assembly, the side of X direction sliding assembly is installed with first clamping assembly, the other side of X direction sliding assembly is installed with second clamping assembly, and the inside upper end of test box is installed with Y direction adjusting assembly, and Y direction adjusting assembly is installed with test fixture assembly, and the front surface of test box is installed with PLC controller by hinge;The existence of Y direction adjusting assembly of the utility model allows test fixture assembly to be adjusted up and down, ensure that test probe or test head can accurately contact every test point, Y direction adjusting assembly also has fine adjustment function, can accurately control the up and down moving distance of test fixture assembly, improve the accuracy and reliability of test.

Description

Technical Field

[0001] This utility model relates to the field of test fixture technology, specifically a PCBA board test fixture. Background Technology

[0002] In the field of electronics manufacturing, PCBA (Printed Circuit Board Assembly) boards are the core components of electronic products, and their quality directly affects the performance and stability of electronic products. During manual testing, testers need to use various simple testing tools, such as multimeters, to measure each circuit node and component on the PCBA board one by one. This method is extremely inefficient because there are numerous components and circuits on the PCBA board. A medium-sized PCBA board may contain hundreds or thousands of test points. Manual testing consumes a lot of time and energy, and manual operation is prone to fatigue. As the testing time increases, the tester's attention will decrease, resulting in a decrease in the accuracy of the test results and the possibility of missing some potential fault points. In actual use, there are significant differences in the size, thickness, and test point positions of different PCBA board models. Utility Model Content

[0003] The purpose of this invention is to provide a PCBA board testing fixture to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a PCBA board testing fixture, comprising a test box, an X-axis sliding assembly, a Y-axis adjusting assembly, a PCB board body, a testing fixture assembly, and a second clamping assembly. The X-axis sliding assembly is installed inside the test box. A first clamping assembly is installed on one side of the X-axis sliding assembly, and a second clamping assembly is installed on the other side. The first and second clamping assemblies can slide along the X-direction. In actual testing scenarios, different test objects may have different sizes and shapes, requiring adjustment of the distance between the two clamping assemblies to accommodate the specifications of the test object. Through the X-axis sliding assembly, operators can easily move the first and second clamping assemblies, precisely adjusting them to the appropriate positions to ensure stable clamping of the test object. The presence of the X-axis sliding assembly allows the first and second clamping assemblies to move independently or collaboratively. Installing the first and second clamping assemblies on the X-axis sliding assembly facilitates maintenance and replacement of the clamping assemblies. During long-term use, the clamping assemblies may experience wear and damage, requiring maintenance. The test chamber is designed for repair or replacement. A PCB board body is installed between the first and second clamping components. A Y-axis adjustment component is installed on the upper inner wall of the test chamber, and a test fixture assembly is mounted on the Y-axis adjustment component. The Y-axis adjustment component allows the test fixture assembly to move freely in the vertical direction to accommodate test points at different heights. Test points on the PCBA board may be distributed at different heights; the presence of the Y-axis adjustment component allows the test fixture assembly to be adjusted vertically, ensuring that the test probe or test head can accurately contact each test point. The Y-axis adjustment component also has a fine-tuning function, which can precisely control the vertical movement distance of the test fixture assembly, improving the accuracy and reliability of the test. The PCB board body is securely clamped between the first and second clamping components, ensuring that it will not shift during the test, thus guaranteeing the accuracy and stability of the test. A PLC controller is installed on the front surface of the test chamber via a hinge. The PLC controller serves as the control center of the entire test fixture, responsible for receiving operating instructions and controlling the operation of each component. Through the PLC controller, users can easily set test parameters, such as test time and test voltage, and monitor the test process in real time.

[0005] Preferably, the X-axis sliding assembly is equipped with a tightening adjustment motor. A forward screw is installed on the output end of the tightening adjustment motor. The forward screw is fixedly connected to one end of a reverse screw via an annular sleeve. The other end of the reverse screw is fixedly connected to the side wall of the test chamber. A second clamping assembly is installed on the forward screw, and a first clamping assembly is installed on the reverse screw. The operation of the tightening adjustment motor can drive the forward screw to rotate. Since the forward screw and the reverse screw are fixedly connected via an annular sleeve, when the forward screw rotates, the reverse screw will also rotate synchronously, but in opposite directions. The second clamping assembly and the first clamping assembly can move relative to each other or move closer together along the X-axis, thereby achieving clamping or releasing of the PCB board body. By precisely controlling the rotation angle and speed of the tightening adjustment motor, the clamping force of the PCB board body can be finely adjusted to ensure that it is both stable and not damaged due to excessive clamping during the test.

[0006] Preferably, the Y-axis adjustment assembly is equipped with two Y-axis motors, and Y-axis guide rods are installed on the output ends of the Y-axis motors. A sliding support plate is installed between the Y-axis guide rods via a sliding member. The two sides of the sliding support plate are installed on the Y-axis guide rail, which is installed on the inner side wall of the test chamber. The sliding support plate can slide smoothly along the Y-axis guide rail, thereby driving the PCB board body installed on it to move in the Y-axis direction. The two Y-axis motors operate synchronously to ensure that the movement of the sliding support plate in the Y-axis direction is smooth and accurate. The cooperative design of the Y-axis guide rods and the Y-axis guide rail not only enhances the stability of the structure but also effectively reduces friction during the sliding process, improving the smoothness and accuracy of the movement.

[0007] Preferably, the testing instrument assembly is equipped with a telescopic cylinder, which is fixed to the upper surface of the sliding support plate. A test probe is installed on the output end of the telescopic cylinder, and an LED supplementary light is installed on the lower surface of the sliding support plate. The test probe can move precisely up and down under the drive of the telescopic cylinder to make close contact with the test points on the PCB board body, ensuring the accuracy of the test. The LED supplementary light provides sufficient light to ensure that the details of the PCB board body can be clearly observed during the test, avoiding test errors caused by insufficient light.

[0008] Preferably, the second clamping assembly is provided with an X-guide rail, a guide block is installed on the X-guide rail, and a guide slide rod is installed on the guide block. One end of the guide slide rod contacts one side edge of the PCB board body. Through the cooperative design of the X-guide rail, guide block and guide slide rod, the movement of the PCB board body in the X-axis direction is more stable and controllable. When it is necessary to adjust the position of the PCB board body in the X-axis direction, it is only necessary to drive the guide slide rod along the X-guide rail through the corresponding drive mechanism to achieve precise movement of the PCB board body in the X-axis direction.

[0009] Preferably, a U-shaped clamping seat is installed at one end of the guide slide rod, and a compression cylinder is installed on the U-shaped clamping seat. A compression plate is installed on the output end of the compression cylinder. The compression cylinder can drive the compression plate to clamp and fix one side edge of the PCB board body, which increases the stability of the PCB board body during the test and makes the clamping of the PCB board body more secure, avoiding test errors caused by unstable clamping. The design of the U-shaped clamping seat also facilitates the installation and disassembly of the compression cylinder and the compression plate, and facilitates the maintenance and replacement of the fixture.

[0010] Compared with the prior art, the beneficial effects of this utility model are: The first and second clamping components of this invention can slide along the X-direction. In actual testing scenarios, different test objects may have different sizes and shapes, requiring adjustment of the distance between the two clamping components to accommodate the specifications of the test objects. Through the X-direction sliding component, the operator can easily move the first and second clamping components and precisely adjust them to the appropriate position to ensure stable clamping of the test objects. The presence of the X-direction sliding component allows the first and second clamping components to move independently or collaboratively. Installing the first and second clamping components on the X-direction sliding component facilitates maintenance and replacement of the clamping components. During long-term use, the clamping components may experience wear and damage, requiring repair or replacement.

[0011] One end of the guide slide rod of this utility model contacts one side edge of the PCB board body. Through the cooperative design of the X-guide track, guide block and guide slide rod, the movement of the PCB board body in the X-axis direction is more stable and controllable. When it is necessary to adjust the position of the PCB board body in the X-axis direction, it is only necessary to drive the guide slide rod along the X-guide track through the corresponding drive mechanism to achieve precise movement of the PCB board body in the X-axis direction. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram on the right side of the present invention; Figure 3 This is a schematic diagram of the X-axis sliding component and clamping component of this utility model. Figure 4 This is a schematic diagram showing the combination of the Y-axis adjustment component and the testing instrument component of this utility model.

[0013] In the diagram: 1. Test box; 2. PLC controller; 3. X-axis sliding assembly; 31. Tightening adjustment motor; 32. Forward screw; 33. Reverse screw; 4. First clamping assembly; 5. Y-axis adjustment assembly; 51. Y-axis motor; 52. Y-axis guide rod; 53. Y-axis guide rail; 54. Sliding support plate; 6. PCB board body; 7. Test instrument assembly; 71. Telescopic cylinder; 72. Test probe; 73. LED supplementary light; 8. Second clamping assembly; 81. X-axis guide rail; 82. Guide block; 83. Guide slide rod; 84. U-shaped clamping seat; 85. Extrusion cylinder; 86. Extrusion plate. Detailed Implementation

[0014] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0015] Please see Figure 1-4This utility model provides an embodiment of a PCBA board testing fixture, comprising a test box 1, an X-axis sliding assembly 3, a Y-axis adjusting assembly 5, a PCB board body 6, a testing fixture assembly 7, and a second clamping assembly 8. The X-axis sliding assembly 3 is installed inside the test box 1. A first clamping assembly 4 is installed on one side of the X-axis sliding assembly 3, and a second clamping assembly 8 is installed on the other side. The first clamping assembly 4 and the second clamping assembly 8 can slide along the X-direction. In actual testing scenarios, different test objects may have different sizes and shapes, requiring adjustment of both clamping assemblies. The distance between the clamping components is adapted to the specifications of the item to be tested. The operator can easily move the first clamping component 4 and the second clamping component 8 via the X-axis sliding component 3, precisely adjusting them to the appropriate position to ensure stable clamping of the item. The presence of the X-axis sliding component 3 allows the first clamping component 4 and the second clamping component 8 to move independently or collaboratively. Mounting the first clamping component 4 and the second clamping component 8 onto the X-axis sliding component 3 facilitates maintenance and replacement of the clamping components. During long-term use, the clamping components may experience wear or damage, requiring repair or replacement. The PCB board body 6 is installed between the first clamping assembly 4 and the second clamping assembly 8. A Y-axis adjustment assembly 5 is installed on the upper inner wall of the test chamber 1. A test fixture assembly 7 is mounted on the Y-axis adjustment assembly 5. The design of the Y-axis adjustment assembly 5 allows the test fixture assembly 7 to move freely in the vertical direction to accommodate test points at different heights. Since test points on the PCBA board may be distributed at different heights, the presence of the Y-axis adjustment assembly 5 allows the test fixture assembly 7 to be adjusted vertically, ensuring that the test probes or test heads can accurately contact each test point. The Y-axis adjustment assembly 5 also has a fine-tuning function. The vertical movement distance of the test fixture component 7 can be precisely controlled, improving the accuracy and reliability of the test. The PCB board body 6 is firmly clamped between the first clamping component 4 and the second clamping component 8, ensuring that no displacement occurs during the test and guaranteeing the accuracy and stability of the test. The front surface of the test box 1 is equipped with a PLC controller 2 via a hinge. The PLC controller 2 serves as the control center of the entire test fixture, responsible for receiving operation commands and controlling the operation of each component. Through the PLC controller 2, users can easily set test parameters, such as test time and test voltage, and monitor the test process in real time.

[0016] The X-axis sliding assembly 3 is equipped with a tightening adjustment motor 31. A forward screw 32 is installed on the output end of the tightening adjustment motor 31. The forward screw 32 is fixedly connected to one end of a reverse screw 33 through an annular sleeve. The other end of the reverse screw 33 is fixedly connected to the side wall of the test chamber 1. A second clamping assembly 8 is installed on the forward screw 32, and a first clamping assembly 4 is installed on the reverse screw 33. The operation of the tightening adjustment motor 31 can drive the forward screw 32 to rotate. Since the forward screw 32 and the reverse screw 33 are fixedly connected through an annular sleeve, when the forward screw 32 rotates, the reverse screw 33 will also rotate synchronously, but in the opposite direction. The second clamping assembly 8 and the first clamping assembly 4 can move relative to each other or move closer together along the X-axis, thereby achieving clamping or releasing of the PCB board body 6. By precisely controlling the rotation angle and speed of the tightening adjustment motor 31, the clamping force of the PCB board body 6 can be finely adjusted to ensure that it is both stable and will not be damaged due to excessive clamping during the test.

[0017] The Y-axis adjustment assembly 5 is equipped with two Y-axis motors 51. Y-axis guide rods 52 are installed on the output ends of the Y-axis motors 51. A sliding support plate 54 is installed between the Y-axis guide rods 52 via a sliding member. The two sides of the sliding support plate 54 are installed on the Y-axis guide rails 53, which are installed on the inner side wall of the test chamber 1. The sliding support plate 54 can slide smoothly along the Y-axis guide rails 53, thereby driving the PCB board body 6 installed on it to move in the Y-axis direction. The two Y-axis motors 51 operate synchronously to ensure that the sliding support plate 54 moves smoothly and accurately in the Y-axis direction. The cooperative design of the Y-axis guide rods 52 and the Y-axis guide rails 53 not only enhances the stability of the structure but also effectively reduces friction during the sliding process, improving the smoothness and accuracy of the movement.

[0018] The testing instrument assembly 7 is equipped with a telescopic cylinder 71, which is fixed to the upper surface of the sliding support plate 54. A test probe 72 is installed on the output end of the telescopic cylinder 71, and an LED supplementary light 73 is installed on the lower surface of the sliding support plate 54. The test probe 72 can move precisely up and down under the drive of the telescopic cylinder 71 so as to make close contact with the test points on the PCB board body 6 and ensure the accuracy of the test. The LED supplementary light 73 provides sufficient light to ensure that the details of the PCB board body 6 can be clearly observed during the test and to avoid test errors caused by insufficient light.

[0019] The second clamping assembly 8 is provided with an X-guide rail 81, a guide block 82 is mounted on the X-guide rail 81, and a guide slide rod 83 is mounted on the guide block 82. One end of the guide slide rod 83 contacts one side edge of the PCB board body 6. Through the cooperative design of the X-guide rail 81, guide block 82, and guide slide rod 83, the movement of the PCB board body 6 in the X-axis direction is more stable and controllable. When it is necessary to adjust the position of the PCB board body 6 in the X-axis direction, it is only necessary to drive the guide slide rod 83 along the X-guide rail 81 through the corresponding drive mechanism to realize the X-axis adjustment of the PCB board body 6. For precise movement in the axial direction, a U-shaped clamping seat 84 is installed at one end of the guide slide rod 83. A pressing cylinder 85 is installed on the U-shaped clamping seat 84, and a pressing plate 86 is installed on the output end of the pressing cylinder 85. The pressing cylinder 85 can drive the pressing plate 86 to clamp and fix one side edge of the PCB board body 6, which increases the stability of the PCB board body 6 during the testing process and makes the clamping of the PCB board body 6 more secure, avoiding test errors caused by unstable clamping. The design of the U-shaped clamping seat 84 also facilitates the installation and disassembly of the pressing cylinder 85 and the pressing plate 86, and facilitates the maintenance and replacement of the fixture.

[0020] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A PCBA board testing fixture, comprising a test box (1), an X-axis sliding assembly (3), a Y-axis adjusting assembly (5), a PCB board body (6), a testing fixture assembly (7), and a second clamping assembly (8), characterized in that: The test box (1) is equipped with an X-axis sliding assembly (3), a first clamping assembly (4) is installed on one side of the X-axis sliding assembly (3), a second clamping assembly (8) is installed on the other side of the X-axis sliding assembly (3), a PCB board body (6) is installed between the first clamping assembly (4) and the second clamping assembly (8), a Y-axis adjustment assembly (5) is installed on the inner wall of the upper part of the test box (1), a test instrument assembly (7) is installed on the Y-axis adjustment assembly (5), and a PLC controller (2) is installed on the front surface of the test box (1) via a hinge.

2. The PCBA board testing fixture according to claim 1, characterized in that: The X-axis sliding assembly (3) is provided with a tightening adjustment motor (31), and a forward screw (32) is installed on the output end of the tightening adjustment motor (31). The forward screw (32) is fixedly connected to one end of the reverse screw (33) through an annular sleeve. The other end of the reverse screw (33) is fixedly connected to the side wall of the test box (1). A second clamping assembly (8) is installed on the forward screw (32), and a first clamping assembly (4) is installed on the reverse screw (33).

3. The PCBA board testing fixture according to claim 1, characterized in that: The Y-axis adjustment assembly (5) is provided with two Y-axis motors (51). Y-axis guide rods (52) are installed on the output end of the Y-axis motors (51). A sliding support plate (54) is installed between the Y-axis guide rods (52) through a sliding member. The two sides of the sliding support plate (54) are installed on the Y-axis guide rail (53), and the Y-axis guide rail (53) is installed on the inner wall of the test box (1).

4. A PCBA board testing fixture according to claim 1, characterized in that: The test instrument assembly (7) is equipped with a telescopic cylinder (71), which is fixed on the upper surface of the sliding support plate (54). A test probe (72) is installed on the output end of the telescopic cylinder (71), and an LED fill light (73) is installed on the lower surface of the sliding support plate (54).

5. A PCBA board testing fixture according to claim 1, characterized in that: The second clamping assembly (8) is provided with an X guide rail (81), a guide block (82) is installed on the X guide rail (81), and a guide slide bar (83) is installed on the guide block (82).

6. A PCBA board testing fixture according to claim 5, characterized in that: A U-shaped clamping seat (84) is installed at one end of the guide slide rod (83), a squeezing cylinder (85) is installed on the U-shaped clamping seat (84), and a squeezing plate (86) is installed on the output end of the squeezing cylinder (85).

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