Sweeper PCBA function test tool

Abstract

A sweeper PCBA function test tool comprises an operation platform. A needle plate is detachably mounted on the working platform, and a plurality of groups of detection probes are arranged on the needle plate; a carrier plate is arranged above the needle plate, the carrier plate is in sliding connection with the needle plate through a guide rod, and an elastic buffer piece is arranged between the needle plate and the carrier plate; the upper end face of the carrier plate is provided with a placement groove used for positioning the PCBA, the front end of the detection probe penetrates through the carrier plate and extends into the placement groove, and the front end of the detection probe is provided with a detection connector in butt joint with a test point on the PCBA. A placement groove is formed in the support plate, a pressing mechanism is arranged above the placement groove, the pressing mechanism comprises a vertically arranged driving device, an execution end of the driving device is connected with a pressing plate, a pressing rod assembly is detachably arranged at the lower end of the pressing plate, and the pressing rod assembly comprises a product pressing rod in butt joint with the PCBA and a displacement pressing rod in butt joint with the support plate; the tail end of the product pressing rod is provided with a pressing head structure matched with the PCBA and electronic components on the PCBA in appearance. According to the utility model, through the technical means of modularization, buffer protection, intelligent detection and the like, the test efficiency and reliability are significantly improved.

Description

Technical Field

[0001] This utility model relates to the technical field of production and testing equipment for sweeping robots, and in particular to a functional testing fixture for a sweeping robot PCBA. Background Technology

[0002] In the production of sweeping machines, PCBAs, as core control components, require rigorous functional testing to ensure their electrical performance and signal transmission reliability. Traditional testing methods typically involve manually connecting test points, which suffers from low testing efficiency, poor contact, and high false test rates. While some automated testing fixtures can improve efficiency, they lack versatility, are difficult to adapt to different PCBA models, and their probes are prone to wear, leading to a decrease in testing accuracy over long-term use.

[0003] Therefore, in view of the shortcomings of the existing technology, it is necessary to design a functional testing fixture for a sweeping robot PCBA to solve the above problems.

[0004] It should be noted that the above introduction to the technical background is only for the purpose of providing a clear and complete explanation of the technical solution of this utility model and facilitating the understanding of those skilled in the art. It should not be assumed that the above content is known to those skilled in the art simply because it has been described in the background section of this utility model. Utility Model Content

[0005] To overcome the shortcomings of the prior art, the present invention aims to disclose a functional testing fixture for a sweeping machine PCBA, which solves the problems of low PCBA testing efficiency, poor versatility, and easy wear of probes in the prior art.

[0006] This utility model discloses a functional testing fixture for a sweeper PCBA, including a working platform;

[0007] A needle plate is detachably installed on the working platform, and the needle plate is equipped with multiple sets of detection probes;

[0008] A carrier plate is provided above the needle plate. The carrier plate is slidably connected to the needle plate through a guide rod. An elastic buffer is provided between the needle plate and the carrier plate.

[0009] The upper surface of the carrier board is provided with a mounting groove for positioning the PCBA. The front end of the test probe passes through the carrier board and extends into the mounting groove. The front end of the test probe is provided with a test connector that mates with the test point on the PCBA.

[0010] A clamping mechanism is provided above the mounting slot. The clamping mechanism includes a vertically arranged drive device. The execution end of the drive device is connected to a pressure plate. The lower end of the pressure plate is detachably provided with a pressure bar assembly. The pressure bar assembly includes a product pressure bar that docks with the PCBA and a displacement pressure bar that docks with the carrier board. The end of the product pressure bar is provided with a pressure head structure that is adapted to the shape of the PCBA and its electronic components.

[0011] Preferred technical solution: The rear end of the detection probe is detachably provided with a needle sleeve, the needle sleeve is installed on the working platform, and the detection probe and the needle sleeve achieve axial elastic expansion and contraction through an elastic component.

[0012] Preferred technical solution: The lower end of the needle sleeve is provided with a welding groove for welding wires, and the welding groove is connected to the tester through a wire.

[0013] Preferred technical solution: The test connector includes three forms: pointed, concave and petal-shaped. The pointed test connector is used to mate with the flat pad, the concave test connector is used to mate with the raised contact, and the petal-shaped test connector is used to mate with the hole contact, so as to meet the contact requirements of different test points.

[0014] Preferred technical solution: The working platform is vertically equipped with guide columns, and the pressure plate is slidably connected to the guide columns through linear bearings to improve the pressing accuracy.

[0015] Preferred technical solution: The pressure plate is also equipped with a barcode scanner for identifying PCBAs to achieve automatic identification and test data binding.

[0016] Preferred technical solution: A clearance groove is provided on the symmetrical side of the placement groove to facilitate the placement and removal of PCBAs in the placement groove.

[0017] Preferred technical solution: The drive device is a servo electric cylinder, used to precisely control the pressing stroke and force.

[0018] Preferred technical solution: The testing fixture also includes a control console, which is equipped with a display for showing the test results.

[0019] Preferred technical solution: The elastic buffer is a spring, used to provide stable buffering force.

[0020] Due to the application of the above technical solution, the beneficial effects of this utility model compared with the prior art are as follows:

[0021] 1) A dual-stage buffer design (elastic buffer between the pin plate and the carrier board + axial elastic expansion and contraction of the test probe) is adopted to ensure flexible contact between the test probe and the PCBA test point, avoiding hard collisions that could damage precision electronic components.

[0022] 2) The test connector is configured with three shapes (pointed head, concave head, and petal head) to adapt to different test point structures (such as flat pads, raised contacts, or hole-type contacts) and improve contact reliability.

[0023] 3) Modular pinboards and probe assemblies support quick-release replacement to adapt to different PCBA testing and replacement needs.

[0024] 4) The integrated barcode scanner enables automatic binding of PCBA identity ID and test data. In conjunction with the console software system, the test parameter history of each circuit board can be traced.

[0025] 5) The clearance slot design reduces the operation time for picking up and placing PCBAs. Combined with the spring-buffered carrier board structure, clamping can be completed with one hand. Attached Figure Description

[0026] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of a functional testing fixture for a sweeper PCBA according to the present invention;

[0028] Figure 2 This is an exploded view of the needle plate and carrier plate in this utility model;

[0029] Figure 3 for Figure 2 A magnified view of a portion of point A in the middle;

[0030] Figure 4 This is a schematic diagram of the clamping mechanism in this utility model.

[0031] In the above attached diagrams, 100 is a PCBA; 1 is a work platform; 2 is a needle plate; 3 is a detection probe; 31 is a detection connector; 31a is a pointed tip; 31b is a concave tip; 31c is a petal-shaped head; 4 is a carrier plate; 41 is a guide rod; 42 is an elastic buffer; 43 is a mounting groove; 44 is a clearance groove; 5 is a clamping mechanism; 51 is a drive device; 52 is a pressure plate; 53 is a product pressure bar; 54 is a displacement pressure bar; 55 is a barcode scanner; 6 is a needle sleeve; 61 is a welding groove; 7 is a guide post; 8 is a control console; and 9 is a display. Detailed Implementation

[0032] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0033] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be used interchangeably where appropriate for the description of embodiments of this application herein. Furthermore, the terms "comprising" and "having," and their synonyms, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0034] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing the present invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0035] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0036] Furthermore, the terms "installation," "setting," "equipped with," "connection," "linking," "fitting," and "fitting" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Similarly, "fitting" can mean completely or partially fitted. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0038] Example:

[0039] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, this utility model discloses a functional testing fixture for a sweeping machine PCBA, comprising:

[0040] Work platform 1 is used to provide an installation reference surface and support other components;

[0041] The needle plate 2 is detachably mounted on the work platform 1 via positioning pins and bolts. The needle plate 2 has five sets of detection probes 3. It should be noted that the detection probes 3 can be flexibly switched according to different PCBA models. The rear end of the detection probe 3 is located within a needle sleeve 6, which is mounted on the work platform 1. The needle sleeve 6 contains an elastic component, allowing the detection probe 3 to elastically extend and retract along the axial direction. The front end of the detection probe 3 is equipped with a detection connector 31, which includes three forms: pointed, concave, and petal-shaped. The flat pads on the PCBA are connected using the pointed detection connector 31; the raised contacts on the PCBA are connected using the concave detection connector 31; and the hole-type contacts on the PCBA are connected using the petal-shaped detection connector 31.

[0042] The carrier plate 4 is located above the needle plate 2. It is slidably connected to the needle plate 2 via four guide rods 41. Four springs are arranged in an array between the needle plate 2 and the carrier plate 4 as elastic buffers 42. The upper end surface of the carrier plate 4 is provided with a placement groove 43 for positioning the PCBA. The front end of the detection probe 3, the detection connector 31, passes through the carrier plate 4 and extends into the placement groove 43 to dock with the test point on the PCBA.

[0043] The clamping mechanism 5 is located above the mounting groove 43. It includes a vertically arranged drive device 51. The execution end of the drive device 51 is connected to a pressure plate 52. The lower end of the pressure plate 52 is detachably provided with a pressure rod assembly. The pressure rod assembly includes a product pressure rod 53 that docks with the PCBA and a displacement pressure rod 54 that docks with the carrier board 4. The end of the product pressure rod 53 is provided with a pressure head structure that is adapted to the shape of the PCBA and its electronic components.

[0044] The method and principle of this utility model are as follows: In use, the model and layout of the detection probe 3 and the product pressure bar 53 are adjusted according to the model of PCBA100; PCBA100 is placed in the placement slot 43 of the carrier plate 4; the drive device 51 is started, and the pressure plate 52 drives the product pressure bar 53 and the displacement pressure bar 54 to press down, causing the carrier plate 4 and PCBA100 to descend synchronously; during this process, the guide rod 41 ensures the stability of the movement trajectory of the carrier plate 4, and the elastic buffer 42 compresses to generate an outward thrust. As the pressing proceeds, the front end detection connector 31 of the detection probe 3 gradually passes through the carrier plate 4 until it contacts the test point of PCBA100 and connects to the tester, then the pressing stops and the test is performed; after the test is completed, the drive device 51 drives the pressure plate 52, the product pressure bar 53 and the displacement pressure bar 54 to rise, and the carrier plate 4 performs a reset movement under the action of the elastic buffer 42. PCBA100 rises synchronously with the carrier plate 4 and separates from the detection probe 3. PCBA100 is then removed for the next test.

[0045] like Figure 1 and Figure 3 As shown, the lower end of the needle sleeve 6 is provided with a welding groove 61 for welding wires. The welding groove 61 is connected to the tester through the wires. The designed welding groove 61 makes welding more convenient.

[0046] like Figure 1 and Figure 4 As shown, a guide column 7 is vertically provided on the working platform 1, and the pressure plate 52 is slidably connected to the guide column 7 through a linear bearing to improve the motion accuracy of the pressure plate 52.

[0047] like Figure 1 and Figure 4 As shown, the pressure plate 52 is also equipped with a barcode scanner 55 for identifying PCBAs, which automatically identifies the PCBA model and binds test data.

[0048] like Figure 1 and Figure 2 As shown, the symmetrical side of the placement slot 43 is provided with a clearance slot 44, which makes it more convenient to grab the PCBA from the clearance slot 44 and can realize one-handed operation.

[0049] like Figure 1 and Figure 4 As shown, the drive device 51 is a servo electric cylinder, which improves motion accuracy.

[0050] like Figure 1 As shown, the testing fixture also includes a control console 8, which is equipped with a display 9 for displaying test results and providing real-time feedback on the test results.

[0051] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A functional testing fixture for a sweeping machine PCBA, comprising a working platform (1), characterized in that: A needle plate (2) is detachably installed on the working platform (1), and multiple sets of detection probes (3) are provided on the needle plate (2). A carrier plate (4) is provided above the needle plate (2). The carrier plate (4) is slidably connected to the needle plate (2) through a guide rod (41). An elastic buffer (42) is provided between the needle plate (2) and the carrier plate (4). The upper end face of the carrier board (4) is provided with a mounting groove (43) for positioning the PCBA. The front end of the detection probe (3) passes through the carrier board (4) and extends into the mounting groove (43). The front end of the detection probe (3) is provided with a detection connector (31) that connects with the test point on the PCBA. A pressing mechanism (5) is provided above the mounting slot (43). The pressing mechanism (5) includes a vertically arranged driving device (51). The execution end of the driving device (51) is connected to a pressure plate (52). The lower end of the pressure plate (52) is detachably provided with a pressure rod assembly. The pressure rod assembly includes a product pressure rod (53) that docks with the PCBA and a displacement pressure rod (54) that docks with the carrier board (4). The end of the product pressure rod (53) is provided with a pressure head structure that is adapted to the shape of the PCBA and its electronic components.

2. The PCBA function test tool of the sweeping machine according to claim 1, characterized in that: The detection probe (3) is detachably provided with a needle sleeve (6) at its rear end. The needle sleeve (6) is installed on the working platform (1), and the detection probe (3) and the needle sleeve (6) are axially elastically stretched and contracted through an elastic component.

3. The PCBA function test tool of the sweeping machine according to claim 2, characterized in that: The lower end of the needle sleeve (6) is provided with a welding groove (61) for welding wires, and the welding groove (61) is connected to the tester through a wire.

4. The PCBA function test tool of the sweeping machine according to claim 1, characterized in that: The detection connector (31) includes three forms: pointed head, concave head, and flap head.

5. The PCBA function test tool of a sweeping machine according to claim 1, characterized in that: The work platform (1) is vertically provided with guide columns (7), and the pressure plate (52) is slidably connected to the guide columns (7) through a linear bearing.

6. The PCBA function test tool of the sweeping machine according to claim 1, characterized in that: The pressure plate (52) is also equipped with a barcode scanner (55) for identifying PCBAs.

7. The PCBA function test tool of a sweeping machine according to claim 1, characterized in that: The symmetrical side of the placement groove (43) is provided with a clearance groove (44).

8. The PCBA function test tool of the sweeping machine according to claim 1, characterized in that: The drive device (51) is a servo electric cylinder.

9. The PCBA function test tool of claim 1, wherein: The testing fixture also includes a control console (8), which is equipped with a display (9) for displaying the test results.

10. The PCBA function test tool for a sweeping machine according to claim 1, characterized in that: The elastic buffer (42) is a spring.

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