Circuit board testing device

Abstract

The circuit board testing device comprises an upper detection assembly, a lower detection assembly, a fastening assembly and a positioning assembly, and the upper detection assembly and the lower detection assembly are oppositely arranged up and down and each comprise a detection probe; the fastening assembly comprises a sliding rail and a fastening clamp, the sliding rail is in sliding fit with the fastening clamp, the sliding rail is horizontally arranged and located between the upper detection assembly and the lower detection assembly, the fastening clamp comprises two clamping blocks, and the two clamping blocks can move oppositely along the sliding rail to clamp a circuit board; the positioning assembly is arranged in the sliding rail and comprises a clamping jaw used for clamping and positioning the circuit board. The device is provided with the upper detection assembly and the lower detection assembly, can carry out the electrical detection of the front and back surfaces of the circuit board at the same time, is higher in detection efficiency, is provided with the fastening assembly for fastening the circuit board and the positioning assembly for pre-positioning the circuit board, can accurately position and then fasten the circuit board, maintains the accurate positioning and firm position of the circuit board during the detection, and improves the detection precision. The detection accuracy is improved.

Description

Technical Field

[0001] The present application relates to the technical field of circuit board testing, and in particular to a circuit board testing device. Background Art

[0002] With the advancement of miniaturization of electronic products, double-sided mixed circuit boards (PCBA) are used more and more. Correspondingly, the problem of low circuit detection efficiency in production is prominent. At present, the common PCBA test devices on the market are single-sided test fixtures, and the test efficiency is not high. In addition, the supporting structure of many circuit board detection devices is complex, lacking a simple and accurately positioned supporting structure, and the detection accuracy is easily affected. For example, Chinese patent 201910657905.9 discloses a circuit board testing device, which adopts a supporting method in the form of a complex connecting rod structure. The supporting test process has a large amplitude and is not easy to accurately position. In addition, problems such as scratches on the circuit board are prone to occur during circuit board detection. Existing detection devices usually lack an adaptive buffer structure, and therefore have poor adaptability and versatility. Utility Model Content

[0003] The present application provides a circuit board testing device to solve the problems in the prior art of low single-sided detection efficiency of circuit board testing devices, complex structure of the holding mechanism used for detection, and lack of accurate positioning capability affecting detection accuracy.

[0004] A circuit board testing device provided in the present application includes:

[0005] An upper detection component and a lower detection component, the upper detection component and the lower detection component are arranged opposite to each other up and down, and both include detection probes;

[0006] A fastening assembly, the fastening assembly includes a slide rail and a fastening fixture, the slide rail and the fastening fixture are slidably matched, the slide rail is horizontally arranged and located between the upper detection assembly and the lower detection assembly, and the fastening fixture includes two clamping blocks, the two clamping blocks can move toward each other along the slide rail to clamp the circuit board;

[0007] The positioning component is arranged in the slide rail and includes a clamping claw for holding and positioning the circuit board.

[0008] In some embodiments, the clamping jaws of the positioning assembly are composed of a horizontal clamping plate of a preset width, and the horizontal clamping plate forms a surface contact with at least an edge portion of the circuit board to hold the circuit board horizontal.

[0009] In some embodiments, the two clamping blocks are provided with avoidance grooves corresponding to the horizontal clamping plates, and when the clamping blocks move toward each other along the slide rails, the horizontal clamping plates can enter the avoidance grooves.

[0010] In some embodiments, a first flexible structure is disposed on the inner side of the clamping jaw, and a second flexible structure is disposed on the portion of the clamping block that contacts the circuit board.

[0011] In some embodiments, the fastening assembly further includes a first driving mechanism and a first push rod. The first driving mechanism is connected to the clamping block via the first push rod to drive the clamping block to reciprocate along the slide rail.

[0012] In some embodiments, the circuit board testing device also includes: a base, a top cover and a support column; the top cover is connected to the top of the base through the support column, the upper detection component is installed on the top cover, the lower detection component is installed on the base, and the fastening component is installed in the middle of the support column.

[0013] In some embodiments, a junction box is disposed in the base; and a lighting lamp is disposed on the top cover.

[0014] In some embodiments, the upper detection component and the lower detection component have the same structure, both including a second driving mechanism, a second push rod, a base plate, a shock absorbing mechanism and a needle plate; the second driving mechanism is connected to the base plate through the second push rod, the base plate is connected to the needle plate through the shock absorbing mechanism, and a detection probe is provided on the needle plate.

[0015] In some embodiments, a plurality of pinholes are provided on the pinhole plate, and detection probes are detachably installed in the pinholes.

[0016] In some embodiments, the shock absorbing mechanisms include four shock absorbing mechanisms, which are respectively connected between the bottom plate and four vertices of the needle plate, and the shock absorbing mechanisms include support rods and shock absorbing springs.

[0017] The circuit board testing device of the present application includes: an upper detection component, a lower detection component, a fastening component and a positioning component. The upper detection component and the lower detection component are arranged opposite to each other up and down, and both include detection probes; the fastening component includes a slide rail and a fastening fixture. The slide rail and the fastening fixture are slidably matched. The slide rail is arranged horizontally and is located between the upper detection component and the lower detection component. The fastening fixture includes two clamping blocks. The two clamping blocks can move toward each other along the slide rail to clamp the circuit board; the positioning component is arranged in the slide rail, including a clamping claw for holding and positioning the circuit board. The present application has an upper detection component and a lower detection component, which can simultaneously perform electrical detection on both sides of the circuit board, and the detection efficiency is higher. The present application has a fastening component for fastening the circuit board and a positioning component for pre-positioning the circuit board, which can accurately position the circuit board and then fasten it, so as to keep the circuit board accurately positioned and firmly positioned during detection, thereby improving detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0020] Figure 1 A schematic diagram of the isometric structure of a circuit board testing device according to an embodiment of the present application is shown;

[0021] Figure 2 A schematic diagram of the main structure of a circuit board testing device according to an embodiment of the present application is shown;

[0022] Figure 3 A schematic diagram of the isometric structure of a positioning assembly of a circuit board testing device according to an embodiment of the present application is shown;

[0023] Figure 4 A schematic diagram of the front view structure of the lower detection component of the circuit board testing device according to an embodiment of the present application is shown;

[0024] Figure 5 A schematic diagram of the main axonometric structure of the lower detection component of the circuit board testing device according to an embodiment of the present application is shown;

[0025] The above drawings include the following reference numerals:

[0026] 1. Upper detection assembly; 2. Lower detection assembly; 21. Detection probe; 22. Needle plate; 23. Shock-absorbing spring; 24. Support rod; 25. Bottom plate; 26. Second push rod; 27. Second driving mechanism; 3. Fastening assembly; 31. First driving mechanism; 32. First push rod; 33. Clamping block; 34. Second flexible structure; 35. Slide rail; 36. Avoidance groove; 4. Positioning assembly; 41. Horizontal clamping plate; 42. First flexible structure; 43. Ventilation rod; 5. Top cover; 6. Support column; 7. Base. DETAILED DESCRIPTION

[0027] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0028] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0029] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways, rotated 90 degrees or in other orientations, and the spatially relative descriptions used herein are interpreted accordingly.

[0030] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0031] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0032] Figures 1 to 5 An embodiment of the circuit board testing device of the present application is schematically shown.

[0033] like Figures 1 to 5As shown, the present application discloses a circuit board testing device, which includes: an upper detection component 1 and a lower detection component 2, which are arranged opposite to each other up and down, and both include a detection probe 21. A fastening component 3, which includes a slide rail 35 and a fastening fixture, and the slide rail 35 and the fastening fixture are slidably matched. The slide rail 35 is horizontally arranged and located between the upper detection component 1 and the lower detection component 2. The fastening fixture includes two clamping blocks 33, and the two clamping blocks 33 can move toward each other along the slide rail 35 to clamp the circuit board. A positioning component 4, which is arranged in the slide rail 35 and includes a clamping claw for holding and positioning the circuit board.

[0034] Through the above design, the circuit board detection device of the embodiment of the present application has an upper detection component 1 and a lower detection component 2, which can simultaneously perform electrical detection on both sides of the circuit board, with high detection efficiency and fast production speed. Moreover, the present application has a fastening component 3 for fastening the circuit board and a positioning component 4 for pre-positioning the circuit board. The two are used in combination to accurately position the circuit board and achieve accurate positioning of the circuit board, and can reliably keep the circuit board firmly in position during detection without being deflected by probe contact, thereby improving the accuracy of detection. At the same time, the fastening component 3 of the present application is composed of a slide rail 35 and a slider placed in the slide rail 35. With the positioning of the clamping claw of the positioning component 4, the circuit board can be clamped quickly and conveniently. The overall structure is simple, easy to manufacture and use, and low in maintenance cost.

[0035] In some embodiments of the present application, Figure 3 As shown, the clamping jaws of the positioning assembly 4 are composed of a horizontal clamping plate 41 of a preset width, and the horizontal clamping plate 41 forms a surface contact with at least the edge portion of the circuit board to hold the circuit board horizontal. In this embodiment, the horizontal clamping plate 41 has a preset width, so that the circuit board can be clamped by surface contact and the circuit board can be accurately kept horizontal at the same time. Then, after the clamping blocks 33 on both sides move toward each other along the slide rails 35 to clamp the circuit board, the detection probes 21 of the upper detection assembly 1 and the lower detection assembly 2 can accurately contact the position to be tested on the circuit board for electrical testing to improve the detection accuracy.

[0036] In some embodiments of the present application, Figure 1 As shown, the two clamping blocks 33 are provided with avoidance grooves 36 corresponding to the horizontal clamping plates 41. When the clamping blocks 33 move toward each other along the slide rails 35, the horizontal clamping plates 41 can enter the avoidance grooves 36, thereby ensuring that the horizontal clamping plates 41 do not interfere with the movement of the clamping blocks 33, ensuring that the clamping blocks 33 can reliably clamp the circuit boards, avoiding collisions between the clamping blocks 33 and the horizontal clamping plates 41 causing deflection of the circuit boards, thereby ensuring that the circuit boards can be accurately positioned before and during clamping.

[0037] In some embodiments of the present application, a first flexible structure 42 is provided on the inner side of the clamping jaw, and a second flexible structure 34 is provided on the portion of the clamping block 33 that contacts the circuit board. Through the first flexible structure 42 and the second flexible structure 34, the positioning component 4 and the fastening component 3 can protect the circuit board, thereby preventing the substrate and electronic components of the circuit board from being scratched or damaged.

[0038] In some embodiments of the present application, Figure 3 As shown, the first flexible structure 42 inside the clamping jaw is an airbag structure, which can achieve automatic clamping by inflation. Figure 3 As shown, the positioning assembly 4 further includes a ventilation rod 43, which is used to connect to the first flexible structure 42 of the airbag structure so as to inflate the first flexible structure 42 to automatically clamp the circuit board.

[0039] In some embodiments of the present application, a second flexible structure 34 is provided on the side of the clamping block 33 that contacts the circuit board. The second flexible structure 34 is an elastic pad such as silicone, rubber and / or sponge, which is used to play a buffering role when contacting the circuit board to avoid damaging the circuit board.

[0040] In some embodiments of the present application, Figure 1 As shown, the fastening assembly 3 further includes a first driving mechanism 31 and a first push rod 32. The first driving mechanism 31 is connected to the clamping block 33 through the first push rod 32, and drives the clamping block 33 to reciprocate along the slide rail 35. The first driving mechanism 31 is, for example, a cylinder, an electric actuator, or a servo motor with a telescopic device, and the first push rod 32 can be a push rod of the first driving mechanism 31 itself, or an external push rod.

[0041] In some embodiments of the present application, Figure 1 and Figure 2 As shown, the circuit board testing device of this embodiment further includes: a base 7, a top cover 5 and a support column 6. The top cover 5 is connected to the top of the base 7 through the support column 6, the upper detection component 1 is installed on the top cover 5, the lower detection component 2 is installed on the base 7, and the fastening component 3 is installed in the middle of the support column 6. Among them, there are four support columns 6, which are located at the four corners of the base 7.

[0042] In some embodiments of the present application, a junction box is provided in the base 7 of the circuit board testing device of this embodiment to realize the electrical connection of each part of the electric drive structure. A lighting lamp is provided on the top cover 5 for lighting to facilitate observation and monitoring of the testing process.

[0043] In some embodiments of the present application, the upper detection assembly 1 and the lower detection assembly 2 have the same structure. Figure 4 and Figure 5As shown, the following detection component 2 is taken as an example, which includes a second driving mechanism 27, a second push rod 26, a base plate 25, a shock absorbing mechanism and a needle plate 22. The second driving mechanism 27 is connected to the base plate 25 through the second push rod 26, and the base plate 25 is connected to the needle plate 22 through the shock absorbing mechanism, and a detection probe 21 is provided on the needle plate 22. The detection component can automatically realize the detection operation of the detection probe 21 through the reciprocating push of the second driving mechanism 27 and the second push rod 26, without manual intervention. In addition, the detection probe 21 is fixed by the base plate 25, the shock absorbing mechanism and the needle plate 22, which can provide a buffer fixation for the detection probe 21, which can not only avoid the detection probe 21 from damaging the circuit board during contact, but also ensure that the detection probe 21 is in close contact with the contacts on the circuit board to ensure accurate detection. In the embodiment of the present application, the detection probe 21 can adopt a POGO PIN spring probe, which also has a certain elastic buffering capacity.

[0044] In some embodiments of the present application, Figure 4 and Figure 5 As shown, the shock absorbing mechanism includes four, and the four shock absorbing mechanisms are respectively connected between the bottom plate 25 and the four vertices of the needle plate 22, and the shock absorbing mechanism includes a support rod 24 and a shock absorbing spring 23. The support rod 24 is telescopically or slidably connected between the bottom plate 25 and the needle plate 22, and the shock absorbing spring 23 is sleeved outside the support rod 24 to provide elastic buffering between the bottom plate 25 and the needle plate 22.

[0045] In some embodiments of the present application, Figure 4 and Figure 5 As shown, a plurality of pinholes are provided on the needle plate 22, and the detection probes 21 are detachably installed in the pinholes. Thus, the positions and the number of the detection probes 21 can be flexibly changed corresponding to different detection contacts of different circuit boards, thereby facilitating electrical detection of different batches of circuit boards and improving the versatility and adaptability of the circuit board testing device embodiment of the present application.

[0046] Combination Figures 1 to 5As shown, the working principle of the embodiment of the present application is explained: first, the circuit board to be tested is placed in the positioning assembly 4 to be initially fixed, and then the button on the base 7 is pressed to drive the clamping blocks 33 on the left and right sides to move toward the circuit board, and finally the circuit board is clamped in the area to be tested. The clamping process has a certain impact resistance due to the soft connection of the first flexible structure 42 and the second flexible structure 34. The lower detection assembly 2 and the upper detection assembly 1 arrange the combination of probes and the corresponding line connection according to the distribution of the circuit board contacts, and move with the second driving mechanism 27 and the second push rod 26 to contact the detection contacts of the circuit board. In this process, the shock-absorbing mechanism composed of the shock-absorbing spring 23 and the support rod 24 makes the detection probe 21 in close contact with the detection contacts of the circuit board, and protects the circuit board from being scratched or stabbed. At this time, the electrical signal detected by the detection probe 21 is transmitted to the programmable detection unit through the wire behind the detection probe 21, and the quality information of the board is finally obtained through the program calculation of the programmable logic controller (FPGA), and the final detection is completed.

[0047] In summary, the circuit board testing device of the present application includes: an upper detection component, a lower detection component, a fastening component and a positioning component. The upper detection component and the lower detection component are arranged opposite to each other up and down, and both include detection probes; the fastening component includes a slide rail and a fastening fixture. The slide rail and the fastening fixture are slidably matched. The slide rail is arranged horizontally and is located between the upper detection component and the lower detection component. The fastening fixture includes two clamping blocks. The two clamping blocks can move toward each other along the slide rail to clamp the circuit board; the positioning component is arranged in the slide rail, including a clamping claw for holding and positioning the circuit board. The present application has an upper detection component and a lower detection component, which can simultaneously perform electrical detection on both sides of the circuit board, and the detection efficiency is higher. The present application has a fastening component for fastening the circuit board and a positioning component for pre-positioning the circuit board, which can accurately position the circuit board and then fasten it, so as to keep the circuit board accurately positioned and firmly positioned during detection, thereby improving detection accuracy.

[0048] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A circuit board testing device, characterized in that: include: An upper detection component (1) and a lower detection component (2), wherein the upper detection component (1) and the lower detection component (2) are disposed opposite to each other in upper and lower directions and both comprise a detection probe (21); A fastening assembly (3), the fastening assembly (3) comprising a slide rail (35) and a fastening fixture, the slide rail (35) and the fastening fixture being slidably matched, the slide rail (35) being arranged horizontally and being located between the upper detection assembly (1) and the lower detection assembly (2), the fastening fixture comprising two clamping blocks (33), the two clamping blocks (33) being able to move toward each other along the slide rail (35) to clamp the circuit board; A positioning component (4), the positioning component (4) is arranged in the slide rail (35), and comprises a clamping claw for holding and positioning the circuit board.

2. The circuit board testing device according to claim 1, characterized in that: The clamping jaws of the positioning assembly (4) are composed of a horizontal clamping plate (41) of a preset width, and the horizontal clamping plate (41) forms surface contact with at least the edge portion of the circuit board to hold the circuit board horizontal.

3. The circuit board testing device according to claim 2, characterized in that: The two clamping blocks (33) are each provided with an avoidance groove (36) corresponding to the horizontal clamping plate (41); when the clamping blocks (33) move toward each other along the slide rail (35), the horizontal clamping plate (41) can enter the avoidance groove (36).

4. The circuit board testing device according to claim 2, characterized in that: A first flexible structure (42) is provided on the inner side of the clamping jaw, and a second flexible structure (34) is provided on the portion of the clamping block (33) that contacts the circuit board.

5. The circuit board testing device according to claim 1, characterized in that: The fastening assembly (3) further comprises a first driving mechanism (31) and a first push rod (32); the first driving mechanism (31) is connected to the clamping block (33) via the first push rod (32) to drive the clamping block (33) to reciprocate along the slide rail (35).

6. The circuit board testing device according to claim 5, characterized in that: The circuit board testing device further comprises: a base (7), a top cover (5) and a support column (6); the top cover (5) is connected to the top of the base (7) via the support column (6), the upper detection component (1) is mounted on the top cover (5), the lower detection component (2) is mounted on the base (7), and the fastening component (3) is mounted in the middle of the support column (6).

7. The circuit board testing device according to claim 6, characterized in that: A junction box is arranged inside the base (7); and a lighting lamp is arranged on the top cover (5).

8. The circuit board testing device according to claim 1, characterized in that: The upper detection component (1) and the lower detection component (2) have the same structure, and both include a second driving mechanism (27), a second push rod (26), a base plate (25), a shock absorbing mechanism and a needle plate (22); the second driving mechanism (27) is connected to the base plate (25) via the second push rod (26), the base plate (25) is connected to the needle plate (22) via the shock absorbing mechanism, and the detection probe (21) is provided on the needle plate (22).

9. The circuit board testing device according to claim 8, characterized in that: The needle plate (22) is provided with a plurality of needle holes, and the detection probes (21) are detachably mounted in the needle holes.

10. The circuit board testing device according to claim 8, characterized in that: The shock absorbing mechanisms include four, and the four shock absorbing mechanisms are respectively connected between the bottom plate (25) and the four vertices of the needle plate (22), and the shock absorbing mechanisms include a support rod (24) and a shock absorbing spring (23).

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