Terminal defect detection device
By scanning the probe steps with a high-resolution camera or a 3D line laser scanner, the problem of inaccurate terminal detection in the prior art is solved, and the accurate determination of terminal retraction and tongue collapse is achieved, thus improving the accuracy of detection.
Patent Information
- Application Number
- CN202520412855.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-11
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2035-03-11
AI Technical Summary
Existing technology cannot accurately detect the retraction of circuit board connector terminals and the collapse of the tongue, resulting in inaccurate defect detection and the inability to identify small changes in distance.
Using a high-resolution camera or a 3D line laser moving scanner, the positional changes of the scanning probe steps are analyzed in conjunction with 3D dot matrix diagrams to accurately determine whether the terminal has retracted or the tongue has collapsed.
It enables precise detection of terminal retraction and tongue collapse, preventing defective products from being loaded onto vehicles and improving the accuracy of detection.
Smart Images
Figure CN223741509U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to terminal performance detection device technical field more specifically, relate to a terminal bad detection device. BACKGROUND
[0002] The stepped needle detection terminal is a precision tool used in the field of electronic manufacturing and testing, mainly used for detecting the connector terminal, solder joint quality and electrical continuity on the circuit board (PCB).
[0003] The prior art uses the stepped needle detection terminal to retreat and the terminal tongue piece collapses, because the step of the probe is limited to the bottom of the connector, cannot continue to stretch to the inside of the terminal, so that the probe cannot contact the tongue piece of the terminal, and further causes the terminal and the probe to be in the non-connecting state, according to the non-connecting connection result, so as to detect the terminal retreat and the terminal tongue piece collapse.
[0004] At present, because the terminal has a certain free gap inside the connector, and the probe cannot completely and accurately touch the inside side wall of the terminal, even if the terminal retreats or the terminal tongue piece collapses during the test process, a loop will be formed between the terminal and the probe, which cannot detect the defect; At the same time, when the terminal defect is monitored, the distance of the terminal retreat and the degree of the terminal opening cannot be accurately detected, and the small distance retreat or slight terminal tongue piece collapse cannot be detected.
[0005] Therefore, in view of the above, the existing structure is improved, and a terminal defect detection device is provided, so as to achieve the purpose of being more practical. CONTENT OF THE UTILITY MODEL
[0006] 1. Technical problem to be solved
[0007] In view of the problems in the prior art, the purpose of the utility model is to provide a terminal defect detection device, which can shoot the position of each step through a camera, scan through a 3d line laser scanner on a moving guide rail, analyze point cloud to calculate the distance of each probe step relative to the connector, determine whether the terminal retreats or the terminal tongue piece collapses, and effectively prevent the situation of defective products being loaded.
[0008] 2. Technical scheme
[0009] In order to solve the above problems, the utility model adopts the following technical scheme.
[0010] A terminal defect detection device, comprising a defect monitoring structure for internal terminal defect detection of a connector, the defect monitoring structure comprising a plurality of probes, the plurality of probes being arranged in parallel to test the inside of the terminal or the top surface of the terminal in sequence, the side surface of each probe being wrapped with a needle sleeve, a spring being arranged on the probe shaft downward to abut against the bottom of the needle sleeve, and a step being fixedly arranged on each probe, the number of terminals being equal to the number of probes, one end of the terminal being a hollow groove structure, and a tongue being arranged inside the hollow groove of the terminal;
[0011] The side surface of the probe and the connector is provided with a linear guide rail and a defect detection device, the defect detection device moving along the linear guide rail, the defect detection device being any one of a high-resolution camera and a 3D line laser mobile scanner.
[0012] Further, the defect detection device adopts the high-resolution camera, the shooting direction of the camera of the high-resolution camera being perpendicular to the extension direction of the probe.
[0013] Further, the connector is a multi-layer structure, and the steps at each probe are staggered.
[0014] Further, the defect detection device adopts the 3D line laser mobile scanner, the 3D line laser mobile scanner moving along the horizontal and vertical directions of the probe and sequentially scanning the plurality of steps.
[0015] Further, the 3D line laser mobile scanner forms a 3D dot matrix after scanning.
[0016] Further, the step is arranged at the proximal end of the probe close to the terminal.
[0017] Further, the step is arranged at the end of the probe away from the terminal.
[0018] 3. Beneficial effects
[0019] Compared with the prior art, the utility model has the advantages that:
[0020] Through the detection method of the high-resolution camera or the 3D line laser mobile scanner, the position change of the probe step is detected, the accurate detection and determination of the retreat distance of the terminal or the collapse condition of the terminal tongue are realized, and the situation of loading of defective products is effectively prevented. BRIEF DESCRIPTION OF DRAWINGS
[0021] Figure 1 It is a structure schematic view when the probe and the terminal are separated in the utility model;
[0022] Figure 2 It is a process schematic view when the probe approaches the terminal in the utility model;
[0023] Figure 3It is the schematic view when the step is at the terminal far end of the probe in the utility model.
[0024] Figure 4 It is the structural schematic view when the high resolution camera is selected for the bad detection equipment in the utility model.
[0025] Figure 5 It is the structural schematic view when the 3D line laser mobile scanning is selected for the bad detection equipment in the utility model.
[0026] Figure 6 It is the structural schematic view when the probe contacts the top of the terminal.
[0027] Mark explanation in the drawing:
[0028] 1, probe;
[0029] 2, connector;
[0030] 3, needle cover;
[0031] 4, step;
[0032] 5, terminal;
[0033] 6, tongue piece;
[0034] 7, linear guide rail;
[0035] 8, bad detection equipment. Specific implementation
[0036] The technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; Obviously, the described embodiments are only a part of the embodiments of the utility model, not all the embodiments, based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor are within the protection scope of the utility model.
[0037] Embodiment 1:
[0038] Please refer to Figure 1 - Figure 6 A terminal bad detection device, including the bad monitoring structure for the bad detection of the internal terminal 5 of the connector 2, the bad monitoring structure includes a plurality of probes 1, a plurality of probes 1 are tested in the internal terminal or the top surface of the terminal in turn, the side surface of each probe 1 is wrapped with needle cover 3, the probe shaft is downwardly provided with spring and is resisted on the bottom of the needle cover, and each probe 1 is fixedly provided with step 4, the number of terminals 5 is equal to the number of probes 1, one end of the terminal 5 is hollow groove body structure, and the hollow groove body inside the terminal 5 is provided with tongue piece 6;
[0039] The side of the probe 1 and the connector 2 is provided with a linear guide rail 7 and a bad detection device 8, the bad detection device 8 moves along the linear guide rail 7, and the bad detection device 8 is any one of a high-resolution camera, a 3D line laser mobile scanner.
[0040] Working principle:
[0041] When the terminal 5 is detected, taking four terminals 5 as an example, which are marked as A, B, C and D respectively, in the traditional detection mode, the terminal tongue piece of the terminal 5 collapses or the terminal 5 retreats, the step 4 of the probe 1 is limited to the bottom of the connector 2, and cannot continue to stretch into the inside of the terminal 5, so that the probe 1 cannot contact the spring 6 of the terminal 5, resulting in that the terminal 5 and the probe 1 are in a non-connection state, thereby detecting that the terminal 5 retreats and the terminal tongue piece of the terminal 5 collapses.
[0042] Based on the traditional detection device, the bad detection device 8 is added, and the high-resolution camera or the 3D line laser mobile scanner is used to accurately detect the position change distance of the step of the probe 1. Due to the terminal retreat or the terminal tongue piece collapse, the probe 1 will move towards the inside of the connector due to the action of the internal spring, thereby generating a position difference with the probe step of the correctly tested terminal. According to the position difference, the moving distance or the tongue piece collapse condition of the terminal 5 is accurately determined, and the accuracy of the bad detection of the terminal 5 is ensured.
[0043] Embodiment 2:
[0044] Based on the above embodiment 1, further description is made.
[0045] Referring to Figure 1 , Figure 2 , Figure 4 , specifically, the bad detection device 8 adopts a high-resolution camera, and the shooting direction of the camera of the high-resolution camera is perpendicular to the extension direction of the probe 1.
[0046] When there is only one connector 2, the position of the resolution camera is fixed, and the linear guide rail 7 does not need to be arranged.
[0047] Referring to Figure 4 , specifically, when a plurality of connectors 2 are arranged, the connector 2 is a multi-layer structure, and the steps 4 of each probe 1 are staggered.
[0048] And the probe 1 is installed in the needle sleeve 3, the needle sleeve 3 is provided with a spring inside, and the probe 1 is elastically movable up and down in the needle sleeve 3, and closely follows the up and down movement of the terminal 5.
[0049] For the multi-layer connector 2, the steps 4 of the probes 1 of each layer are offset, so that the steps 4 of each layer of the probe 1 can be seen when shooting or scanning from above.
[0050] Referring to Figure 1 ,Figure 2 、 Figure 5 , specifically, the bad detection device 8 adopts 3D line laser mobile scanner, the 3D line laser mobile scanner moves along the vertical direction of the probe 1, and scans a plurality of steps 4 in turn.
[0051] Specifically, the 3D line laser mobile scanner forms a 3D dot matrix after scanning.
[0052] Using the 3D dot matrix, the position analysis of the probe 1 step is carried out, the moving distance of the probe 1 can be determined accurately, and then the moving distance of the terminal 5 is accurately determined, so as to ensure the accuracy of the bad detection of the terminal 5.
[0053] Referring to Figure 1 、 Figure 2 , specifically, the step 4 is arranged at the proximal end of the probe 1 close to the terminal 5.
[0054] Based on the traditional detection device, the bad detection device 8 is added, and high-resolution camera or 3D line laser mobile scanner is used to accurately detect the moving distance of the probe 1 step 4 relative to the terminal 5 insertion direction of the connector 2, and then accurately determine the moving distance of the terminal 5 or the internal tongue of the terminal 5 collapse, so as to ensure the accuracy of the bad detection of the terminal 5.
[0055] Referring to Figure 1 、 Figure 3 , specifically, the step 4 is arranged at the end of the probe 1 away from the terminal 5.
[0056] Avoiding the limitation of the step 4 on the insertion distance of the probe 1 into the terminal 5, the bad detection of the terminal 5 when the retreat distance is large can be carried out.
[0057] Embodiment 3:
[0058] Based on the above embodiment 1 and embodiment 2, further description is made.
[0059] Referring to Figure 1 , based on the probe 1 and the terminal 5 in any case, the probe 1 needs to be fixed in the test module, and the observation hole is opened to expose the step 4 part to take a photo.
[0060] The above is only the preferred specific embodiment of the present application; however, the protection scope of the present application is not limited to this. Any skilled person in the art can make equivalent replacement or change according to the technical scheme of the present application and the improvement concept, which should be covered in the protection scope of the present application.
Claims
1. A terminal defect detection device including a defect monitoring structure for internal terminal (5) defect detection of a connector (2), characterized by: The badness monitoring structure comprises a plurality of probes (1) which are tested in terminals or on top surfaces of the terminals in sequence, the side surface of each probe (1) is wrapped with a needle sleeve (3), a spring is arranged on the axial downward of the probe and abuts against the bottom of the needle sleeve, and a step (4) is fixedly arranged on each probe (1), the number of terminals (5) is equal to the number of probes (1), one end of the terminal (5) is a hollow groove structure, and a tongue (6) is arranged in the hollow groove of the terminal (5); The side surface of the probe (1) and the connector (2) is provided with a linear guide rail (7) and a badness detection device (8), the badness detection device (8) moves along the linear guide rail (7), and the badness detection device (8) is any one of a high-resolution camera and a 3D line laser mobile scanner.
2. The terminal defect detection apparatus according to claim 1, characterized by: The badness detection device (8) adopts the high-resolution camera, and the shooting direction of the camera of the high-resolution camera is perpendicular to the extension direction of the probe (1).
3. The terminal defect detection apparatus according to claim 1, characterized by: The connector (2) is a multi-layer structure, and the steps (4) at each probe (1) are staggered.
4. The terminal defect detection apparatus according to claim 1, characterized by: The badness detection device (8) adopts the 3D line laser mobile scanner, the 3D line laser mobile scanner moves along the horizontal and vertical directions of the probe (1), and sequentially scans a plurality of steps (4).
5. The terminal defect detection apparatus according to claim 1, characterized by: The 3D line laser mobile scanner forms a 3D dot matrix after scanning.
6. The terminal defect detection apparatus according to claim 1, characterized by: The step (4) is arranged at the proximal end of the probe (1) close to the terminal (5).
7. The terminal defect detection apparatus according to claim 1, characterized by: The step (4) is arranged at the end of the probe (1) away from the terminal (5).