Precise detection device for high voltage resistance of printed circuit board
By designing a printed circuit board inspection device with electric slide rails and carriages, continuous loading and unloading of multiple circuit boards was achieved, solving the problem of long inspection process cycles in existing technologies, improving production efficiency and inspection accuracy, and ensuring the safety of equipment and operators.
Patent Information
- Application Number
- CN202520394683.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-07
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-03-07
AI Technical Summary
Existing high-voltage testing equipment for printed circuit boards has a long process cycle, low production efficiency, and requires a lot of manual intervention.
Design a detection device that includes an electric slide rail, a carriage, a lifting frame, and a clamping plate to achieve continuous loading and unloading of multiple circuit boards. The device uses an electric cylinder and a rubber sleeve to ensure stable descent and contact of the pressure plate, and a damper to slow down the movement speed, thus ensuring the accuracy and safety of the detection.
This increases the number of circuit boards that can be tested per unit time, reduces waiting time, ensures the accuracy and safety of testing, and avoids misjudgment or damage caused by mechanical impact.
Smart Images
Figure CN223897593U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of circuit board processing detection, especially relate to a printed circuit board high pressure performance precision detection device. BACKGROUND
[0002] Printed circuit is a kind of board that circuit pattern is printed on insulating substrate using printing technology, used to carry and connect various electronic components.
[0003] Printed circuit board high pressure performance detection is an important step to ensure its safe and reliable operation in high voltage environment. This detection is mainly used to evaluate the insulation performance and electrical stability of printed circuit board under high voltage, to prevent safety accidents and equipment failure caused by breakdown or leakage.
[0004] Most of the current high pressure detection devices for circuit boards are usually equipped with only a single placement area, which means that each circuit board must go through the process of placement, clamping, pushing and fixing, high pressure detection and unloading in turn. This linear process results in longer cycle time, limits production efficiency and increases the need for manual intervention.
[0005] Therefore, a printed circuit board high pressure performance precision detection device is specially designed. SUMMARY
[0006] In order to overcome the shortcomings of the prior art, the utility model provides a printed circuit board high pressure performance precision detection device.
[0007] The technical scheme of the utility model is as follows: a printed circuit board high pressure performance precision detection device, comprising a test cabinet, a mounting frame is arranged at the top rear side of the test cabinet, an electric cylinder with a retractable end downward is installed on the upper part of the mounting frame, a pressing plate is arranged on the retractable rod of the electric cylinder, guide rods one are arranged on both sides of the top rear part of the test cabinet, the rear part of the pressing plate is connected with the guide rods one through sliding, a plurality of retractable rods are equidistantly arranged on the bottom of the pressing plate, rubber sleeves are sleeved on the lower ends of the retractable rods, a conductive plate is arranged at the center of the inner top part of the test cabinet, a plurality of output contacts are arranged on the conductive plate, a guide rail is embeddedly installed at the rear part of the inner top part of the test cabinet, an electric sliding rail is installed on the front side of the top of the test cabinet, a sliding bracket is arranged on the sliding seat of the electric sliding rail, the rear part of the sliding bracket is connected with the guide rail through sliding, lifting frames are symmetrically and slidably arranged on both sides of the rear upper part of the sliding bracket, guide rods two are arranged in the lifting frames, clamping plates for placing circuit boards are symmetrically and slidably arranged on the guide rods two, springs one are arranged on the inner sides of the clamping plates, adjusting blocks are also slidably arranged on the guide rods two, one end of the spring one is connected with the adjusting block, screws are threadedly penetrated and arranged on the upper parts of the adjusting blocks, the end parts of the screws extend to the upper ends of the guide rods two and abut against them, springs two are arranged at the sliding connection parts of the lifting frames and the sliding bracket.
[0008] As a preferred technical scheme of the utility model, the plurality of telescopic rods on the pressing plate correspond to the plurality of output contacts on the conductive plate, and the output contacts are in contact with the pressing plate when the circuit board is descending.
[0009] As a preferred technical scheme of the utility model, the clamping plates on both sides of the lifting frame are oppositely arranged, and the lower parts of the clamping plates are provided with protruding anti-skid parts.
[0010] As a preferred technical scheme of the utility model, the starting position of the electric sliding rail sliding seat is below the side of the pressing plate, and one of the lifting frames is below the pressing plate, corresponding to the pushing position.
[0011] As a preferred technical scheme of the utility model, the utility model further comprises dampers, the top of the electric sliding rail is provided with the dampers on both sides, the dampers correspond to the starting position and the ending position of the sliding seat of the electric sliding rail respectively, and the piston ends of the two dampers are in contact with the outside of the sliding carriage when the sliding carriage is driven to move.
[0012] As a preferred technical scheme of the utility model, the utility model further comprises a control display, the top of the mounting frame is provided with the control display, and the control display is electrically connected with the test cabinet, the electric cylinder and the electric sliding rail.
[0013] The utility model has the following advantages: 1. through the design of the electric sliding rail and the sliding carriage, the continuous loading and unloading of the plurality of circuit boards is realized, the waiting time is reduced, and the number of the circuit boards that can be detected in unit time is improved; the position of the clamping plate is adjusted by the spring and the adjusting block, so that each circuit board can be accurately placed and perfectly connected with the output contacts on the conductive plate, thereby ensuring the consistency and accuracy of the detection.
[0014] 2. the pressing plate is stably lowered by the electric cylinder, and the buffering effect provided by the rubber sleeve is combined, so that the misjudgment or damage caused by mechanical impact is avoided, and the stability and reliability of the applied voltage are ensured.
[0015] 3. the dampers are installed at the starting and ending positions of the electric sliding rail, the speed of the sliding seat is effectively slowed down, the impact caused by the sudden start or stop is prevented, and the safety of the equipment and the operator is protected. DRAWINGS
[0016] Figure 1 It is the assembly structure schematic view of the utility model.
[0017] Figure 2 It is the three-dimensional structure schematic view of the test cabinet, the mounting frame and the electric cylinder of the utility model.
[0018] Figure 3 It is the three-dimensional structure schematic view of the conductive plate, the guide rail and the electric sliding rail of the utility model.
[0019] Figure 4 This is a three-dimensional structural diagram of the two components of this utility model: the slide, the lifting frame, and the guide rod.
[0020] In the attached diagram, the following labels are used: 1: Test cabinet, 2: Mounting bracket, 3: Electric cylinder, 4: Pressure plate, 5: Guide rod one, 6: Telescopic rod, 7: Rubber sleeve, 8: Conductive plate, 9: Guide rail, 10: Electric slide rail, 11: Slide carriage, 12: Lifting frame, 13: Guide rod two, 14: Clamping plate, 15: Spring one, 16: Adjusting block, 17: Screw, 18: Spring two, 19: Damper, 20: Control display. Detailed Implementation
[0021] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, but this does not limit the scope of protection and application of the present invention.
[0022] Example: A device for accurately testing the high voltage resistance of printed circuit boards, such as... Figures 1-4As shown, the device includes a test cabinet 1, a mounting bracket 2, an electric cylinder 3, a pressure plate 4, and guide rods 5. The test cabinet 1 serves as the basic structure of the entire testing device, supporting all other components and providing internal space. A mounting bracket 2 is welded to the top rear side of the test cabinet 1. An electric cylinder 3 with its telescopic end pointing downwards is mounted on the upper part of the mounting bracket 2 via a mounting seat. The mounting bracket 2 provides a stable mounting position for the electric cylinder 3, ensuring it can apply force vertically downwards. A pressure plate 4 is fastened to the telescopic rod 6 of the electric cylinder 3. The electric cylinder 3 drives the pressure plate 4 to move up and down, achieving pressure control and contact with the circuit board. Guide rods 5 are fixedly installed on both sides of the rear top of the test cabinet 1. The guide rods 5 guide the up and down movement of the pressure plate 4, maintaining its straightness and stability. The pressure plate 4 is positioned behind... The pressure plate 4 is slidably connected to the guide rod 5 on both sides. Multiple telescopic rods 6 are evenly spaced at the bottom of the pressure plate 4. The pressure plate 4 is used to evenly distribute pressure onto the multiple telescopic rods 6, ensuring that each output contact can make good contact with the circuit board. A rubber sleeve 7 is fitted at the lower end of the telescopic rod 6 to provide cushioning and prevent the pressure plate 4 from directly impacting the circuit board, protecting it from damage. The telescopic rod 6 extends from the pressure plate 4 to the rubber sleeve 7, ensuring that the pressure plate 4 accurately contacts the output contacts on the conductive plate 8 when it descends. A conductive plate 8 is located at the top center of the test cabinet 1. Multiple output contacts are provided on the conductive plate 8 for forming an electrical connection with the circuit board for high-voltage testing. The multiple telescopic rods 6 on the pressure plate 4 correspond to the multiple output contacts on the conductive plate 8, and the output contacts are activated when the circuit board descends. This creates contact with the pressure plate 4. A guide rail 9 is embedded at the rear top of the test cabinet 1. An electric slide rail 10 is installed at the front top of the test cabinet 1. The starting position of the slide block of the electric slide rail 10 is below the side of the pressure plate 4, while one of its lifting frames 12 is directly below the pressure plate 4, corresponding to the pushing position. A slide frame 11 is provided on the slide block of the electric slide rail 10. The rear of the slide frame 11 is slidably connected to the guide rail 9. The electric slide rail 10 drives the slide block and its slide frame 11 to move along the guide rail 9, realizing the conversion between the circuit board loading area and the testing area. The guide rail 9 provides a horizontal sliding path for the slide frame 11, ensuring that the slide frame 11 can move smoothly on the predetermined track. Lifting frames 12 are symmetrically slidably installed on both sides of the upper rear of the slide frame 11. A guide rail is provided inside the lifting frame 12. Rod 2 13 has symmetrically and slidably mounted clamping plates 14 for placing the circuit board. The clamping plates 14 are used to clamp and fix the circuit board to prevent displacement during testing. The guide rod 2 13 provides guidance and support for the clamping plates 14 to ensure stable clamping of the circuit board. The clamping plates 14 on both sides of the lifting frame 12 are arranged opposite each other, and each clamping plate 14 has a protruding anti-slip part at the bottom. Spring 15 on the inner side of the clamping plate 14 provides appropriate clamping force to ensure that the circuit board is firmly fixed. Symmetrical adjusting blocks 16 are also slidably mounted on the guide rod 2 13. The position of the clamping plates 14 is finely adjusted by adjusting blocks 16 to ensure precise alignment of the output contacts on the conductive plate 8 with the circuit board. One end of spring 15 is connected to adjusting block 16.Each adjusting block 16 has a screw 17 threaded through its upper part to fix its position. The end of the screw 17 extends to and abuts against the upper end of the guide rod 13. A spring 18 is provided at the sliding connection between the lifting frame 12 and the slide 11 to provide additional elastic support and restoring force for the lifting frame 12, helping it to slide smoothly on the slide 11.
[0023] like Figure 1 and Figure 4 As shown, it also includes dampers 19. Damperes 19 are installed on both sides of the top of the electric slide rail 10. The dampers 19 correspond to the starting position and the ending position of the slide block of the electric slide rail 10, respectively. When the slide block drives the slide frame 11 to move, the piston ends of the two dampers 19 contact the outside of the slide frame 11, thereby slowing down the speed of the slide block of the electric slide rail 10, especially at the starting and ending positions, to ensure a smooth transition and reduce impact.
[0024] like Figure 1 As shown, it also includes a control display 20. The control display 20 is installed on the top of the mounting bracket 2 as a human-machine interface for starting the system, setting parameters, monitoring status and recording data. The control display 20 is electrically connected to the test cabinet 1, electric cylinder 3 and electric slide rail 10. The operation of each electrical component can be centrally controlled through the control display 20.
[0025] The operator starts the system via the control display 20. The control display 20 is electrically connected to key components such as the test cabinet 1, electric cylinder 3, and electric slide rail 10, serving as a centralized management and monitoring unit. Based on the specific specifications of the printed circuit board under test, the operator inputs or selects preset test parameters, such as voltage level and test time, on the control display 20. The electric slide rail 10 drives the slide block to move the carriage 11 to its starting position, which is below the pressure plate 4. At this time, the lifting frame 12 is directly below the pressure plate 4, corresponding to the pushing position. The operator places the printed circuit board under test between the clamping plates 14, applying appropriate clamping force using the spring 15 inside the clamping plates 14 to ensure the circuit board is securely fixed. The anti-slip part at the bottom of the clamping plates 14 further prevents displacement of the circuit board during testing. By rotating the screw 17 on the adjusting block 16, the position of the clamping plates 14 can be finely adjusted so that the circuit board can be precisely aligned with the output contacts on the conductive plate 8. The electric slide rail 10 then moves again, moving the carriage 11 along with the loaded circuit board to the predetermined test position on the guide rail 9. In this process, the dampers 19 installed on both sides of the top of the electric slide rail 10 begin to function. When the slide passes the starting position, the piston end of the damper 19 contacts the outside of the slide 11, slowing down its speed and ensuring a smooth transition. After receiving the command, the electric cylinder 3's telescopic rod 6 drives the pressure plate 4 to slide down along the guide rod 5 until the end of the telescopic rod 6 at the bottom of the pressure plate 4 passes through the rubber sleeve 7 and contacts the output contacts on the conductive plate 8. The rubber sleeve 7 provides a buffering effect during this process, protecting the circuit board from hard impacts. Once the pressure plate 4 is fully in place, the output contacts on the conductive plate 8 form an electrical connection with the circuit board. The power supply in the test cabinet 1 begins to apply a high voltage to the circuit board according to preset parameters. This step is used to evaluate the insulation performance and electrical stability of the circuit board. During the entire high voltage application, the control display 20 continuously receives data feedback from the test cabinet 1. After the test is completed, the electric cylinder 3 retracts the telescopic rod 6, causing the pressure plate 4 to rise back to the initial height. Subsequently, the electric slide rail 10 drives the slide back to the starting position and removes the circuit board that has completed the test.
[0026] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is 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 device for accurately testing the high voltage resistance of printed circuit boards, characterized in that: The test cabinet (1) includes a mounting bracket (2) on the rear top of the test cabinet (1). An electric cylinder (3) with its telescopic end facing downwards is mounted on the upper part of the mounting bracket (2). A pressure plate (4) is mounted on the telescopic rod (6) of the electric cylinder (3). Guide rods (5) are mounted on both sides of the rear top of the test cabinet (1). The rear sides of the pressure plate (4) are slidably connected to the guide rods (5). Multiple telescopic rods (6) are evenly spaced at the bottom of the pressure plate (4). Rubber sleeves (7) are fitted on the lower ends of the telescopic rods (6). A conductive plate (8) is mounted in the center of the top inside the test cabinet (1). Multiple output contacts are mounted on the conductive plate (8). A guide rail (9) is embedded in the rear top of the test cabinet (1). An electric slide rail (10) is mounted on the front top of the test cabinet (1). A slide frame (11) is provided on the slide base. The rear part of the slide frame (11) is slidably connected to the guide rail (9). Lifting frames (12) are symmetrically slidably provided on both sides of the upper rear part of the slide frame (11). A guide rod (13) is provided inside the lifting frame (12). A clamp (14) for placing the circuit board is symmetrically and slidably provided on the guide rod (13). A spring (15) is located on the inner side of the clamp (14). A symmetrical adjusting block (16) is also slidably provided on the guide rod (13). One end of the spring (15) is connected to the adjusting block (16). A screw (17) is threaded through the upper part of each adjusting block (16). The end of the screw (17) extends to the upper end of the guide rod (13) and abuts against it. A spring (18) is provided at the sliding connection between the lifting frame (12) and the slide frame (11).
2. The device for accurately testing the high voltage resistance of printed circuit boards as described in claim 1, characterized in that: Multiple telescopic rods (6) on the pressure plate (4) correspond to multiple output contacts on the conductive plate (8), and the output contacts make contact with it when the circuit board descends.
3. The device for accurately testing the high voltage resistance of printed circuit boards as described in claim 2, characterized in that: The clamps (14) on both sides of the lifting frame (12) are arranged opposite each other, and each clamp (14) has a protruding anti-slip part at the bottom.
4. The device for accurately testing the high voltage resistance of printed circuit boards as described in claim 3, characterized in that: The starting position of the electric slide rail (10) slide is located below the side of the pressure plate (4), while its lifting frame (12) is located directly below the pressure plate (4), corresponding to the pushing position.
5. The device for accurately testing the high voltage resistance of printed circuit boards as described in claim 4, characterized in that: It also includes dampers (19). Damperes (19) are installed on both sides of the top of the electric slide rail (10). The dampers (19) correspond to the starting position and ending position of the slide block of the electric slide rail (10). When the slide block drives the slide frame (11) to move, the piston ends of the two dampers (19) contact the outside of the slide frame (11).
6. The device for accurately testing the high voltage resistance of printed circuit boards as described in claim 5, characterized in that: It also includes a control display (20), which is mounted on the top of the mounting bracket (2). The control display (20) is electrically connected to the test cabinet (1), the electric cylinder (3) and the electric slide rail (10).