A test tool for PCBA

Abstract

The utility model provides a kind of test tool of PCBA belongs to test technical field.The test tool includes organism, with the test seat for placing PCBA;Multiple detectors are respectively fixed on test seat, for the flatness of PCBA is detected in common cooperation, and the value detected in one of the detectors exceeds the case where preset value, can be fed back to operator;Pressing plate is located above base, and probe is equipped on pressing plate;Driving mechanism is connected with pressing plate, for controlling pressing plate to move downward to make probe contact with test point on PCBA, and move upward to make probe away from test point on PCBA.The test tool can detect the flatness of PCBA before testing, to improve test effect.

Description

Technical Field

[0001] This utility model belongs to the field of testing technology, and in particular relates to a test fixture for PCBA. Background Technology

[0002] In related technologies, when testing PCBAs, test results are often poor or the test values ​​do not meet the expected values ​​because the PCBA is not placed flat. Operators are often unaware of this situation in time and fail to adjust the PCBA to make it flat. Utility Model Content

[0003] In view of the above-mentioned problems existing in the prior art, the purpose of this utility model embodiment is to provide a test fixture for PCBA, which improves the test effect of PCBA.

[0004] The technical solution adopted in this embodiment of the utility model is:

[0005] A PCBA test fixture, comprising:

[0006] The main body is equipped with a test socket for placing the PCBA;

[0007] Multiple detectors are fixed on the body and located below the test base to work together to detect the flatness of the PCBA. If the value detected by at least one detector exceeds a preset value, feedback is given to the operator.

[0008] A pressure plate is located above the test seat, and probes are provided on the pressure plate;

[0009] A drive mechanism, connected to the pressure plate, is used to control the pressure plate to move downward so that the probe contacts the test point on the PCBA, and to move upward so that the probe moves away from the test point on the PCBA.

[0010] In some embodiments, the test fixture is provided with a groove adapted to the PCBA, the PCBA can be inserted into the groove, and the bottom of the groove is provided with a plurality of detection holes, the detection part of each detector is located in the detection hole respectively.

[0011] In some embodiments, the detector is a digital contact sensor.

[0012] In some embodiments, the machine body includes a worktable, side plates located on both sides of the worktable, and a top plate and a front plate connecting the two side plates;

[0013] The test stand is fixed on the workbench, and a fixed seat is provided on the workbench. The fixed seat is located on one side of the test stand, and the drive mechanism is disposed on the fixed seat.

[0014] In some embodiments, the workbench is a box structure, the test seat is fixed to the top of the workbench, and the portions of the plurality of detectors other than the detection section are respectively located inside the workbench.

[0015] In some embodiments, the driving mechanism includes a driving cylinder and a linear guide rail, the linear guide rail having a slider that moves in a vertical direction, the driving cylinder being tractively connected to the slider for controlling the slider to move in a vertical direction; the pressure plate is connected to the slider;

[0016] The test fixture also includes an emergency stop button, a start button, and a reset button. The emergency stop button, the start button, and the reset button are electrically connected to the drive cylinder. Pressing the start button controls the piston rod of the drive cylinder to extend, pressing the reset button controls the piston rod of the drive cylinder to retract, and pressing the emergency stop button stops the operation of the drive cylinder.

[0017] In some embodiments, the start button is fixed to the top of the workbench, and the reset button and the emergency stop button are respectively fixed to the front panel.

[0018] In some embodiments, the test seat is provided with a pin hole;

[0019] The pressure plate is provided with a positioning pin, which can be inserted into the pin hole during the downward movement of the pressure plate.

[0020] In some embodiments, the pressure plate is further provided with a pressure column, which can press down on the PCBA during the downward movement of the pressure plate.

[0021] In some embodiments, the testing fixture further includes a display connected to the plurality of detectors respectively, for displaying the values ​​detected by the plurality of detectors.

[0022] Compared with the prior art, the beneficial effects of the embodiments of this utility model are as follows:

[0023] The test fixture in this embodiment is equipped with multiple detectors on the test stand for placing the PCBA. These detectors work together to detect the flatness of the PCBA, which makes it easier for operators to understand whether the PCBA is placed flat, reduces the difficulty of operation for operators, and improves the product testing accuracy of the PCBA.

[0024] It should be understood that the foregoing general description and the following detailed description are exemplary and illustrative only, and are not intended to limit the present invention.

[0025] The overview of various implementations or examples of the technology described in this utility model is not a complete disclosure of the full scope or all features of the disclosed technology. Attached Figure Description

[0026] In drawings that are not necessarily drawn to scale, the same reference numerals may describe similar parts in different views. The drawings generally illustrate various embodiments by way of example rather than limitation and, together with the description and claims, serve to explain embodiments of the utility model. Where appropriate, the same reference numerals are used in all drawings to refer to the same or similar parts.

[0027] Figure 1 This is a schematic diagram of the test fixture for the PCBA according to an embodiment of the present invention;

[0028] Figure 2 This is a schematic diagram of the structure of the test fixture workbench in an embodiment of this utility model;

[0029] Figure 3 This is a partial structural schematic diagram of the workbench according to an embodiment of the present utility model;

[0030] Figure 4 This is a schematic diagram of the structure of the test stand in an embodiment of the present invention;

[0031] Figure 5 This is a schematic diagram of the structure of the pressure plate in an embodiment of the present utility model.

[0032] In the diagram: 1. Machine body; 10. Workbench; 100. Test seat; 101. Groove; 102. Pin hole; 103. Detection hole; 11. Side plate; 12. Front plate; 13. Top plate; 14. Fixing seat;

[0033] 2. Detector; 3. Pressure plate; 31. Positioning pin; 32. Pressure column; 33. Pinhole; 4. Drive mechanism; 41. Drive cylinder; 42. Linear guide rail; 43. Slider; 5. Start button; 6. Reset button; 7. Emergency stop button; 8. PCBA. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0035] Unless otherwise defined, the technical or scientific terms used in this utility model shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar words used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly. To keep the following description of the embodiments of this utility model clear and concise, detailed descriptions of known functions and known components are omitted.

[0036] like Figures 1 to 3 As shown in the figure, this utility model embodiment provides a PCBA test fixture, which mainly includes a body 1, multiple detectors 2, a pressure plate 3 and a drive mechanism 4.

[0037] The body 1 is provided with a test stand 100 for placing PCBA8. The pressure plate 3 is located above the test stand 100. The pressure plate 3 is provided with probes (not shown in the figure), and the probes on the pressure plate 3 are opposite to the test points on PCBA8.

[0038] The drive mechanism 4 is connected to the pressure plate 3 and is used to control the pressure plate 3 to move downward so that the probe contacts the test point on the PCBA8, and to move upward so that the probe moves away from the test point on the PCBA8.

[0039] When the pressure plate 3 moves downward to make the probe contact the test point on the PCBA8, the PCBA8 can be powered on, and then the testing of the PCBA8 can begin. After the test is completed, the pressure plate 3 is moved upward to move the probe away from the test point on the PCBA8, and the next PCBA8 is replaced. Then the above operation is repeated.

[0040] Multiple detectors 2 are fixed to the body 1 and located below the test base 100. These detectors 2 work together to detect the flatness of the PCBA8. If the value detected by at least one detector 2 exceeds a preset value, feedback can be provided to the operator, ensuring that the operator knows whether the PCBA8 is placed flat. In other words, if the value detected by one detector 2 exceeds the preset value, it means that the PCBA8 is not placed flat, and the corresponding part of the PCBA8 may have warped edges.

[0041] It should be noted that the above preset values ​​need to be determined based on the specific type of detector 2 and the corresponding operating conditions. The preset value can be a specific numerical value or a range of values. For example, if the preset value is a range of values, then when all the values ​​detected by detector 2 are within the preset range, it means that the PCBA8 is placed flat. Conversely, if the value detected by one of the detectors 2 is outside the range, it can be considered that the PCBA8 is not placed flat.

[0042] In addition, there are several ways to provide feedback to the operator when the value detected by detector 2 exceeds the preset value. For example, it can be done through sound feedback. A corresponding alarm can be set on detector 2. When the value on detector 2 exceeds the preset value, an alarm will be sounded to provide feedback to the operator, so that the operator can know which detector 2 is responsible. Alternatively, it can be done through light feedback. When the value on detector 2 exceeds the preset value, a flashing light will be emitted to provide feedback to the operator.

[0043] In this embodiment, the test fixture is equipped with multiple detectors 2 below the test stand 100 for placing PCBA8. The multiple detectors 2 work together to detect the flatness of PCBA8, which makes it easier for operators to determine whether PCBA8 is placed flat on the test stand 100, reduces the difficulty of operation for operators, and improves the product testing accuracy of PCBA8.

[0044] like Figure 4 As shown, in some embodiments, the test socket 100 is provided with a groove 101 that is adapted to the PCBA8. The PCBA8 can be locked in the groove 101, thereby ensuring the stability of the PCBA8 placed on the test socket 100.

[0045] The bottom of the groove 101 is provided with multiple detection holes 103, and the detection part of each detector 2 is located in the detection hole 103. That is, one detector 2 corresponds to at least one detection hole 103. When the PCBA8 is placed in the groove 101, it can cover all the detection holes 103. The detection part of the detector 2 abuts against the PCBA8, thereby triggering the detector 2.

[0046] Preferably, multiple detection holes 103 are evenly arranged at the corners or around the perimeter of the groove 101, which can ensure the flatness of the PCBA8 placed in the groove 101.

[0047] The shape and structure of the test stand 100 are not specifically limited; it can be a block structure, etc.

[0048] like Figure 3As shown, in some embodiments, the multiple detectors 2 can be digital contact sensors, such as the Keyence GT-H10 sensor. The detection part of this sensor extends into the detection hole 103 on the test base 100. When the PCBA8 is placed in the groove 101, the PCBA8 can trigger the detection part of the sensor, thereby enabling the sensor to obtain a detection value.

[0049] like Figure 1 As shown, in some embodiments, the machine body 1 may include a worktable 10, side plates 11 located on both sides above the worktable 10, a top plate 13 connecting the two side plates 11, a front plate 12 and a rear plate (not shown in the figure), the front plate 12 connects the top of the two side plates 11, the height of the front plate 12 is less than the height of the side plates 11, and the height of the rear plate is equal to the height of the side plates 11.

[0050] The top plate 13, side plate 11 and front plate 12 form a cavity structure with an open front side, wherein the test seat 100 is fixed on the workbench 10 and located inside the cavity structure.

[0051] The workbench 10 is provided with a fixed seat 14, which is located on the side of the test seat 100 facing the rear plate. The drive mechanism 4 is mounted on the fixed seat 14 to connect the pressure plate 3. The specific shape and structure of the fixed seat 14 are not specifically limited.

[0052] In some embodiments, the workbench 10 can be a box structure, and the test seat 100 can be fixed to the top of the workbench 10. For example, the test seat 100 can be fixed to the workbench 10 by multiple connecting columns around its perimeter, and there is a certain space between the bottom of the test seat 100 and the workbench 10.

[0053] The top of the workbench 10 has a through hole opposite to the detection hole 103 on the test seat 100. Multiple detectors 2 are fixed inside the workbench 10, and the detection part of each detector 2 extends through the through hole on the workbench 10 into the detection hole 103 on the test seat 100.

[0054] like Figure 2 As shown, in some embodiments, the drive mechanism 4 may include a drive cylinder 41 and a linear guide rail 42. The linear guide rail 42 may be fixed on the fixed base 14. The linear guide rail 42 has a slider 43 that moves in the vertical direction. The drive cylinder 41 is connected to the slider 43 for controlling the slider 43 to move in the vertical direction. The pressure plate 3 may be connected to the slider 43 and can move with the slider 43 in the vertical direction. The drive cylinder 41 may be an electric cylinder.

[0055] Furthermore, the testing fixture may also include an emergency stop button 7, a start button 5, and a reset button 6. The emergency stop button 7, start button 5, and reset button 6 are electrically connected to the drive cylinder 41 and can control the operation of the drive cylinder 41 respectively.

[0056] Pressing the start button 5 extends the piston rod of the drive cylinder 41, causing the slider 43 to move downwards. Pressing the reset button 6 retracts the piston rod of the drive cylinder 41, causing the slider 43 to move upwards. Pressing the emergency stop button 7 stops the operation of the drive cylinder 41.

[0057] After the PCBA8 is placed on the test stand 100, the operator presses the start button 5. The pressure plate 3 moves downward until the probe on the pressure plate 3 contacts the detection point on the PCBA8 and then stops. This stopping process can be operated by the user or the stroke of the piston rod can be set in advance so that it will automatically stop extending after the probe contacts the detection point on the PCBA8.

[0058] After the PCBA8 on the test stand 100 has been tested, the reset button 6 can be pressed, and the pressure plate 3 will move upward to the initial position. At this time, the operator can replace the next PCBA8 to be tested. If an emergency occurs during the movement of the pressure plate 3, the emergency stop button 7 can be pressed to immediately stop the movement of the pressure plate 3.

[0059] like Figure 1 As shown, in some embodiments, the start button 5 can be fixed on the top of the workbench 10 and near its edge, and the reset button 6 and the emergency stop button 7 can be fixed on the front panel 12 respectively, so as to facilitate the operator to press them.

[0060] like Figure 4 As shown, in some embodiments, the test stand 100 for placing the PCBA8 may be provided with pin holes 102 around the groove 101.

[0061] A positioning pin 31 corresponding to the pin hole 102 can be provided on the pressure plate 3. When the pressure plate 3 moves downward, the positioning pin 31 can be inserted into the pin hole 102, thereby realizing the positioning of the pressure plate 3.

[0062] The number of pin holes 102 is not specifically limited. When there are multiple pin holes 102, they are arranged around the groove 101. The positioning pins 31 on the pressure plate 3 correspond to one pin hole 102.

[0063] like Figure 5 As shown, in some embodiments, the pressure plate 3 may also be provided with a pressure post 32. The pressure post 32 extends downward. During the downward movement of the pressure plate 3, the pressure post 32 can press down on the PCBA8 board, thereby ensuring the stability of the PCBA8 during the testing process.

[0064] The pressure post 32 can be made of a flexible material, such as rubber, to avoid hard contact between the pressure post 32 and PCBA8, which could damage PCBA8.

[0065] Each edge of the PCBA8 can be fitted with a pressure post 32, which presses against the edge of the PCBA8 to prevent contact with the electronic components of the PCBA8.

[0066] In addition, multiple pinholes 33 can be provided on the pressure plate 3, each pinhole 33 being used to install a probe (not shown in the figure).

[0067] In some embodiments, the test fixture of this embodiment may further include a display, which is connected to multiple detectors 2 respectively, for displaying the values ​​detected by the multiple detectors 2. The display may have multiple display windows, and each detector 2 may correspond to a display window. Each display window displays the value detected by the corresponding detector 2. When the value detected by one of the detectors 2 exceeds a preset value, the corresponding display window may change color to prompt the operator to know in time whether the PCBA8 is placed flat and to determine which part of the PCBA8 may have warped edges.

[0068] The above description is intended to be illustrative and not restrictive. Those skilled in the art can make variations, modifications, substitutions, and alterations to the above embodiments within the scope of this disclosure. Moreover, the above examples (or one or more of them) can be used in combination with each other, and these embodiments can be combined with each other in various combinations or arrangements.

Claims

1. A test fixture for PCBA, characterized in that, include: The main body is equipped with a test socket for placing the PCBA; Multiple detectors are fixed on the body and located below the test base to work together to detect the flatness of the PCBA. If the value detected by at least one detector exceeds a preset value, feedback is given to the operator. A pressure plate is located above the test seat, and probes are provided on the pressure plate; A drive mechanism, connected to the pressure plate, is used to control the pressure plate to move downward so that the probe contacts the test point on the PCBA, and to move upward so that the probe moves away from the test point on the PCBA; The test socket is provided with a groove that is compatible with the PCBA, and the PCBA can be stuck in the groove. The bottom of the groove is provided with multiple detection holes, and the detection part of each detector is located in the detection hole. The machine body includes a workbench, which is a box structure. The test seat is fixed to the top of the workbench, and the parts of the multiple detectors other than the detection part are located inside the workbench. The top of the workbench has a through hole opposite to the detection hole on the test seat. Multiple detectors are fixed inside the workbench, and the detection part of each detector extends through the through hole on the workbench into the detection hole on the test seat.

2. The PCBA testing fixture as described in claim 1, characterized in that, The detector is a digital contact sensor.

3. The PCBA testing fixture as described in claim 1, characterized in that, The side panels located on both sides of the workbench, and the top and front panels connecting the two side panels; The test stand is fixed on the workbench, and a fixed seat is provided on the workbench. The fixed seat is located on one side of the test stand, and the drive mechanism is disposed on the fixed seat.

4. The PCBA testing fixture as described in claim 3, characterized in that, The driving mechanism includes a driving cylinder and a linear guide rail. The linear guide rail has a slider that moves in the vertical direction. The driving cylinder is connected to the slider in a driving connection and is used to control the slider to move in the vertical direction. The pressure plate is connected to the slider. The test fixture also includes an emergency stop button, a start button, and a reset button. The emergency stop button, the start button, and the reset button are electrically connected to the drive cylinder. Pressing the start button controls the piston rod of the drive cylinder to extend, pressing the reset button controls the piston rod of the drive cylinder to retract, and pressing the emergency stop button stops the operation of the drive cylinder.

5. The PCBA testing fixture as described in claim 4, characterized in that, The start button is fixed to the top of the workbench, and the reset button and the emergency stop button are respectively fixed to the front panel.

6. The PCBA testing fixture as described in claim 1, characterized in that, The test fixture is provided with a pin hole; The pressure plate is provided with a positioning pin, which can be inserted into the pin hole during the downward movement of the pressure plate.

7. The PCBA testing fixture as described in claim 1, characterized in that, The pressure plate is also provided with a pressure column, which can press down on the PCBA as the pressure plate moves downward.

8. The PCBA testing fixture as described in claim 1, characterized in that, The testing fixture also includes a display, which is connected to the plurality of detectors respectively, for displaying the values ​​detected by the plurality of detectors.

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