Shielding cover surface flatness testing device

Abstract

This utility model relates to a shielding cover surface flatness detection device, comprising: a loading assembly including two legs, a transfer linear module, a hollow rotating platform, and a support base; the support base is used to clamp the shielding cover; and a detection assembly installed above the loading assembly; the detection assembly includes a heightening frame, a square tube, two square hole fixing clamps, and displacement sensors; the transfer linear module is used to move the shielding cover to below the two displacement sensors. The above-mentioned shielding cover surface flatness detection device has a simple structure and is easy to use. The transfer linear module moves the shielding cover to below the two displacement sensors, and the hollow rotating platform drives the shielding cover to rotate at a uniform and smooth speed, facilitating continuous non-contact measurement of the shielding cover surface by the two displacement sensors. This not only avoids rigid damage to the shielding cover surface but also further improves the detection accuracy.

Description

Technical Field

[0001] This utility model relates to the field of shielding cover surface flatness detection technology, and in particular to a shielding cover surface flatness detection device. Background Technology

[0002] The core function of a shielding cover is to isolate electromagnetic interference. Its frame is soldered to the grounding copper foil of the PCB to form a sealed Faraday cage. If the surface of the shielding cover is uneven, with bends, twists, or irregularities, its frame will not be able to make complete and tight contact with the PCB grounding copper foil. Tiny gaps will appear after soldering, allowing high-frequency electromagnetic noise to leak or intrude, significantly reducing shielding effectiveness and potentially causing the product to fail EMC (electromagnetic compatibility) tests.

[0003] Currently, common flatness testing methods mostly employ contact measuring tools, such as feeler gauges or dial indicator probes, which are directly placed against the surface of the shielding cover for measurement. However, the surface of the shielding cover is usually electroplated (e.g., tin-plated or nickel-plated), making it relatively soft. Mechanical contact can easily cause scratches or contamination, affecting not only the appearance quality but also potentially compromising soldering reliability. For high-value-added products, the risk of surface damage from such contact testing methods is particularly prominent and unacceptable. Utility Model Content

[0004] Based on this, the present invention provides a shielding cover surface flatness detection device with simple structure and convenient use. The transfer linear module moves the shielding cover to below the two displacement sensors. The hollow rotating platform drives the shielding cover to rotate at a uniform speed and smoothly, which facilitates the two displacement sensors to continuously measure the surface of the shielding cover in a non-contact manner. This not only avoids rigid damage to the surface of the shielding cover, but also further improves the detection accuracy.

[0005] To achieve the objectives of this utility model, the following technical solution is adopted: A device for detecting the surface flatness of a shielding cover, comprising: The loading assembly includes two parallel, spaced-apart legs, a transfer linear module mounted on the two legs, a hollow rotary platform connected to a slide of the transfer linear module, and a support base coaxially connected to the rotor of the hollow rotary platform; the support base is used to clamp the shielding cover; and The detection assembly is installed above the loading assembly; the detection assembly includes a riser connected to the top surface of the two support legs, a square tube installed on one side of the riser, two square hole fixing clamps movably installed on the square tube, and displacement sensors respectively connected to each square hole fixing clamp; the transfer linear module is used to move the shielding cover to below the two displacement sensors.

[0006] The aforementioned shielding cover surface flatness detection device has a simple structure and is easy to use. The transfer linear module moves the shielding cover to below the two displacement sensors. The hollow rotating platform drives the shielding cover to rotate at a uniform and smooth speed, which allows the two displacement sensors to continuously measure the surface of the shielding cover in a non-contact manner. This not only avoids rigid damage to the surface of the shielding cover, but also further improves the detection accuracy.

[0007] In one embodiment, a positioning cavity is provided in the middle of the top surface of the support.

[0008] In one embodiment, the shielding cover surface flatness detection device further includes a loading and unloading assembly connected to the detection assembly; the loading and unloading assembly includes a loading linear module installed at one end of the riser, a unloading linear module installed at the other end of the riser, and suction cup claws respectively connecting the loading linear module and the unloading linear module; the suction cup claws used to connect the loading linear module serve as loading suction cup claws, and the suction cup claws used to connect the unloading linear module serve as unloading suction cup claws.

[0009] In one embodiment, the suction cup claw includes a lifting cylinder, a bracket connecting the piston rod of the lifting cylinder, a plurality of suction cups spaced apart around the periphery of the bracket, and a distance sensor mounted on one side of the bracket; the cylinder body of the lifting cylinder is used to connect to the loading linear module or the unloading linear module.

[0010] In one embodiment, the suction cup claw is connected to the linear unloading module via a push-pull cylinder. Attached Figure Description

[0011] Figure 1 This is a three-dimensional schematic diagram of a shielding cover surface flatness detection device according to an embodiment of the present invention; Figure 2 for Figure 1 An exploded view of the shielding cover surface flatness detection device shown; Figure 3 for Figure 2 An enlarged view of circle A shown; Figure 4 for Figure 2 A schematic diagram showing the comparison between the detection component and the loading / unloading component in the shielding cover surface flatness detection device; Figure 5 for Figure 2 A three-dimensional schematic diagram of the components loaded in the shielding cover surface flatness detection device shown; Figure 6 for Figure 2 The diagram shows a three-dimensional representation of the suction cup claw in the shielding cover surface flatness testing device.

[0012] Attached image annotations: 10-Loading assembly, 11-Feet, 12-Transfer linear module, 13-Hollow rotary platform, 14-Bearing seat, 140-Positioning cavity; 20-Detection component, 21-Elevator, 22-Square tube, 23-Square hole fixing clamp, 24-Displacement sensor; 30-Loading and unloading assembly, 31-Loading linear module, 32-Unloading linear module, 33-Suction cup claw, 331-Lifting cylinder, 332-Bracket, 333-Suction cup, 334-Distance sensor, 34-Push-pull cylinder; 40 - Shielding cover. Detailed Implementation

[0013] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0014] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0015] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0016] Please see Figures 1 to 6 The shielding cover surface flatness detection device according to one embodiment of the present invention includes a loading component 10, a detection component 20 installed above the loading component 10, and a loading / unloading component 30 connected to the detection component 20.

[0017] The loading assembly 10 includes two parallel and spaced legs 11, a transfer linear module 12 mounted on the two legs 11, a hollow rotary platform 13 connected to the slide of the transfer linear module 12, and a bearing seat 14 coaxially connected to the rotor of the hollow rotary platform 13; the bearing seat 14 is used to clamp the shield 40.

[0018] like Figure 5As shown, a positioning cavity 140 is provided in the middle of the top surface of the support 14. The positioning cavity 140 is used to position and accommodate the shield 40. The hollow rotating platform 13 drives the shield 40 to rotate at a uniform speed and smoothly, which facilitates the detection component 20 to scan the surface of the shield 40 and realize the flatness measurement work.

[0019] The detection assembly 20 includes a riser 21 connected to the top surface of the two support legs 11, a square tube 22 installed on one side of the riser 21, two square hole fixing clips 23 movably installed on the square tube 22, and displacement sensors 24 respectively connected to each square hole fixing clip 23; the support base 14 is used to move to the bottom of the two displacement sensors 24.

[0020] Understandably, in practical operation, the transfer linear module 12 moves the shielding cover 40 below the two displacement sensors 24, adjusting the relative spatial position between the shielding cover 40 and the two displacement sensors 24 to ensure that the two displacement sensors 24 can be effectively aligned with the area to be measured, preparing for subsequent scanning measurements. The relative distance between the two displacement sensors 24 is adjustable, facilitating measurements on different areas of shielding covers 40 of different specifications, greatly improving the flexibility of the inspection.

[0021] After positioning, the hollow rotating platform 13 drives the shielding cover 40 to rotate. During this rotation, two displacement sensors 24 continuously measure the surface of the rotating shielding cover 40 in a non-contact manner. Because the shielding cover 40 is rotating, the displacement sensors 24 actually scan and sample a circular trajectory or a series of different points on the surface of the shielding cover 40, thereby acquiring a large amount of surface contour data to achieve multi-point coverage detection of the surface of the shielding cover 40. Compared with traditional contact measurement, this invention uses a non-contact method, which not only avoids rigid damage to the surface of the shielding cover 40 but also further improves the detection accuracy.

[0022] After the rotational scanning process is completed, the two displacement sensors 24 transmit their respective collected measurement data to the background data processing system for analysis. The background data processing system generates corresponding measurement curves based on the measurement data from the two displacement sensors 24. The difference between the peak and valley values ​​on the curves reflects the unevenness (such as bumps, warping, etc.) of the surface of the shield 40 along the scanning path. By observing whether the fluctuation amplitude of the two curves exceeds the preset allowable fluctuation threshold, the surface flatness of the shield 40 is judged: if the fluctuation of both curves does not exceed the preset value, the surface flatness of the shield 40 is judged to meet the production quality requirements; if the fluctuation of either curve exceeds the preset value, or the fluctuation of both curves exceeds the preset value, the surface flatness of the shield 40 is judged to not meet the production quality requirements.

[0023] The loading and unloading assembly 30 includes a loading linear module 31 installed at one end of the riser frame 21, a unloading linear module 32 installed at the other end of the riser frame 21, and suction cup claws 33 connecting the loading linear module 31 and the unloading linear module 32 respectively. The suction cup claws 33 used to connect the loading linear module 31 serve as loading suction cup claws, and the suction cup claws 33 used to connect the unloading linear module 32 serve as unloading suction cup claws.

[0024] During loading, the transfer linear module 12 drives the unloaded carrier 14 to move below the loading linear module 31, and the loading suction cup claw places the shielding cover 40 to be tested inside the carrier 14. Next, the transfer linear module 12 drives the carrier 14 and the shielding cover 40 to move below the two displacement sensors 24 for testing. After testing, the transfer linear module 12 drives the carrier 14 and the shielding cover 40 to move below the unloading linear module 32, and the unloading suction cup claw picks up the shielding cover 40 for unloading.

[0025] like Figure 6 As shown, the suction cup claw 33 includes a lifting cylinder 331, a bracket 332 connecting the piston rod of the lifting cylinder 331, multiple suction cups 333 spaced around the bracket 332, and a distance sensor 334 mounted on one side of the bracket 332. The cylinder body of the lifting cylinder 331 is used to connect to the loading linear module 31 or the unloading linear module 32. The suction cups 333 are used to pick up the shielding cover 40, and the distance sensor 334 is used to detect whether the shielding cover 40 is in position.

[0026] Furthermore, such as Figure 2 As shown, in this embodiment, the suction cup claw 33 is connected to the feeding linear module 32 via a push-pull cylinder 34, which increases the mobility and range of movement of the suction cup claw 33, and can conveniently release the tested shield 40 at different positions to distinguish between qualified and unqualified products.

[0027] The aforementioned shielding cover surface flatness detection device has a simple structure and is easy to use. The transfer linear module 12 moves the shielding cover 40 to below the two displacement sensors 24. The hollow rotating platform 13 drives the shielding cover 40 to rotate at a uniform and smooth speed, which allows the two displacement sensors 24 to continuously measure the surface of the shielding cover 40 in a non-contact manner. This not only avoids rigid damage to the surface of the shielding cover 40, but also further improves the detection accuracy.

[0028] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0029] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A shield surface flatness detection device characterized by, include: The loading assembly includes two parallel, spaced-apart legs, a transfer linear module mounted on the two legs, a hollow rotary platform connected to a slide of the transfer linear module, and a support base coaxially connected to the rotor of the hollow rotary platform; the support base is used to clamp the shielding cover; and The detection assembly is installed above the loading assembly; the detection assembly includes a riser connected to the top surface of the two support legs, a square tube installed on one side of the riser, two square hole fixing clamps movably installed on the square tube, and displacement sensors respectively connected to each square hole fixing clamp; the transfer linear module is used to move the shielding cover to below the two displacement sensors.

2. The shield surface flatness detection device according to claim 1, characterized by, A positioning cavity is provided in the middle of the top surface of the support.

3. The shield surface flatness detection device according to claim 1, characterized by, It also includes a loading and unloading assembly that connects to the detection assembly; the loading and unloading assembly includes a loading linear module installed at one end of the riser, a unloading linear module installed at the other end of the riser, and suction cup claws that connect the loading linear module and the unloading linear module respectively; the suction cup claws used to connect to the loading linear module serve as loading suction cup claws, and the suction cup claws used to connect to the unloading linear module serve as unloading suction cup claws.

4. The shield surface flatness detection device according to claim 3, characterized by The suction cup claw includes a lifting cylinder, a bracket connecting the piston rod of the lifting cylinder, multiple suction cups spaced around the bracket, and a distance sensor mounted on one side of the bracket; the cylinder body of the lifting cylinder is used to connect to the loading linear module or the unloading linear module.

5. The shield surface flatness detection device according to claim 3, characterized by The suction cup claw is connected to the linear unloading module via a push-pull cylinder.

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