Rapid clamping device for circuit board conduction test

Abstract

The utility model provides a circuit board conduction test rapid clamping device which comprises a base, a clamping mechanism is fixedly installed in the middle of the base, a bearing table is fixedly installed in the middle of the top of the base, the clamping end of the clamping mechanism is arranged at the top of the bearing table, a fixing arm is fixedly installed on the rear side of the base, and the fixing arm is fixedly connected with the bearing table. During application, the whole device adopts the design of a three-dimensional adjusting system, the device can be endowed with strong adaptation capability, the device can quickly adapt to electrode layouts of different circuit boards, the design of a hand screwing type fixing screw rod and a limiting hole, and the device is convenient to use while flexible adjustment is guaranteed. Reliable mechanical locking and ordered management of the wiring sleeve on the wire are provided, risks of poor line contact, short circuit and the like are further reduced, the conductive connector and the electrode of the circuit board can be in stable contact, the test accuracy is remarkably improved, meanwhile, manual operation links are greatly reduced, and the detection efficiency is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of circuit board manufacturing and processing technology, and in particular to a quick clamping device for circuit board continuity testing. Background Technology

[0002] In the electronics manufacturing industry, circuit board continuity testing is a crucial process for controlling product quality. Currently, the industry commonly uses the method of connecting the anode connector to the positive terminal of the power supply and the cathode connector to the negative terminal of the power supply to build a stable current loop for the circuit board. This testing method can not only accurately measure the voltage and current values ​​of each node in the circuit and determine whether the circuit connection is normal, but also effectively avoid the risk of damage to polarized components such as electrolytic capacitors and diodes due to incorrect polarity, ensuring the safety and accuracy of the test.

[0003] However, existing rapid clamping devices for circuit board continuity testing have significant shortcomings. These devices are relatively simple in function, only able to fix and clamp the circuit board. After the circuit board is clamped, they cannot automatically complete the rapid connection between the conductive connectors and the circuit board electrodes. Subsequent connection operations still rely on manual operation, which not only significantly increases labor costs and operation time, reducing testing efficiency, but also easily leads to connection errors and poor contact during manual operation, resulting in deviations in test data. In addition, frequent manual connection operations may also cause physical damage to the circuit board, affecting product yield. It is clear that existing testing devices cannot meet the efficient and accurate testing needs of modern electronic manufacturing and urgently need to be improved through innovative design. Utility Model Content

[0004] To address the aforementioned problems, this invention proposes a quick clamping device for circuit board continuity testing, which can more accurately solve the problems described above.

[0005] This utility model is achieved through the following technical solution:

[0006] This utility model proposes a quick clamping device for circuit board continuity testing, including a base, a clamping mechanism fixedly installed in the middle of the base, a support platform fixedly installed in the middle of the top of the base, the clamping end of the clamping mechanism being located on the top of the support platform, a fixed arm fixedly installed on the rear side of the base, a first electric push rod fixedly installed at the top front end of the fixed arm, and a continuity connection mechanism fixedly installed through the fixed arm at the output end of the first electric push rod.

[0007] The power connection mechanism includes a mounting sleeve, which is fixedly installed on the bottom output end of the first electric push rod. A first motor is fixedly installed on the bottom of the mounting sleeve. A mounting bracket is fixedly installed on the output end of the first motor. A guide rail is fixedly installed on the bottom of the mounting bracket. Second electric push rods are fixedly installed on both sides of the top of the guide rail. A connecting bracket is fixedly installed on the output end of the second electric push rod. A movable block is fixedly installed on the outer end of the connecting bracket. The movable block is slidably connected to both ends of the guide rail. A power connection component is fixedly installed on the bottom of the movable block.

[0008] Furthermore, the power connection assembly includes a mounting arm, which is fixedly mounted on the bottom of the movable block. A rail frame is fixedly mounted on the bottom of the mounting arm, and a slider is slidably connected inside the rail frame. A side arm is fixedly mounted on the bottom of the slider, and a fixing screw is threadedly connected to the upper outer side of the side arm. The end of the fixing screw passes through the side arm, and a conductive connector is fixedly connected to the bottom of the slider. One of the two conductive connectors is set as a cathode and the other as an anode.

[0009] Furthermore, the fixing screw is a hand-tightening screw, and the outer side of the rail frame has limit holes arranged linearly at equal intervals, with the end of the fixing screw inserted into the limit hole.

[0010] Furthermore, support arms are fixedly installed on both sides of the bottom of the guide rail, and wiring sleeves are fixedly installed on the outer ends of the support arms. A power-connecting wire is fixedly connected to the outer side of the conductive connector, and the outer end of the power-connecting wire is arranged inside the wiring sleeve.

[0011] Furthermore, support legs are fixedly installed at the four corners of the base, and a base plate is fixedly installed at the bottom of each support leg.

[0012] Furthermore, mounting holes are provided at all four corners of the base plate, and the mounting holes are countersunk holes.

[0013] The beneficial effects of this utility model are:

[0014] 1. The innovative design of using a lead screw drive and symmetrical clamping structure achieves efficient and stable circuit board fixation. When the clamping mechanism is activated, the second motor drives the lead screw to rotate. With the special design of the reverse threads at both ends, the sliding block connected to it can quickly and accurately clamp the circuit board in the center under the limiting effect of the transverse track. This symmetrical clamping method not only avoids the uneven force and damage to the board surface that may be caused by traditional single-sided clamping, but also is compatible with circuit boards of various sizes, from small chip boards to large PCB boards. At the same time, its precise centering positioning characteristics greatly improve the repeatability and consistency of testing, effectively reduce the detection error caused by circuit board displacement, and provide a reliable foundation for subsequent continuity testing.

[0015] 2. The device adopts a three-dimensional adjustment system design, which gives it strong adaptability and can quickly adapt to the electrode layout of different circuit boards. The design of the hand-tight fixing screw and limit hole ensures flexible adjustment while providing reliable mechanical locking. The wiring sleeve manages the wires in an orderly manner, further reducing the risk of poor contact and short circuits. It enables the conductive connector to make stable contact with the circuit board electrodes, significantly improving the accuracy of the test. At the same time, it greatly reduces the manual operation steps and effectively improves the testing efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of this utility model from below;

[0018] Figure 3 This is a schematic diagram of the rear view structure of this utility model;

[0019] Figure 4 This is a top view of the conductive connection mechanism of this utility model.

[0020] Figure 5 This is a bottom view of the conductive connection mechanism of this utility model.

[0021] In the diagram: 1. Base; 2. Clamping mechanism; 21. Transverse track; 22. Lead screw; 23. Sliding block; 24. Clamping plate; 25. Second motor; 26. Clamping arm; 3. Bearing platform; 4. Fixed arm; 5. First electric push rod; 6. Conducting and connecting mechanism; 61. Mounting sleeve; 62. First motor; 63. Mounting bracket; 64. Guide rail; 65. Second electric push rod; 66. Connecting bracket; 67. Movable block; 68. Connecting assembly; 681. Mounting arm; 682. Rail frame; 683. Slider; 684. Side arm; 685. Fixing screw; 686. Conductive connector; 687. Limiting hole; 688. Support arm; 689. Wiring sleeve; 6810. Connecting wire; 7. Support leg; 8. Base plate; 9. Mounting hole. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example 1

[0024] A circuit board continuity test quick clamping device includes a base 1, a clamping mechanism 2 fixedly installed in the middle of the base 1, a support platform 3 fixedly installed in the middle of the top of the base 1, the clamping end of the clamping mechanism 2 is located on the top of the support platform 3, a fixing arm 4 fixedly installed on the rear side of the base 1, a first electric push rod 5 fixedly installed at the front end of the top of the fixing arm 4, and a power connection mechanism 6 fixedly installed through the fixing arm 4 at the output end of the first electric push rod 5.

[0025] The power connection mechanism 6 includes a mounting sleeve 61, which is fixedly mounted on the bottom output end of the first electric push rod 5. A first motor 62 is fixedly mounted on the bottom of the mounting sleeve 61. A mounting bracket 63 is fixedly mounted on the output end of the first motor 62. A guide rail 64 is fixedly mounted on the bottom of the mounting bracket 63. A second electric push rod 65 is fixedly mounted on both sides of the top of the guide rail 64. A connecting bracket 66 is fixedly mounted on the output end of the second electric push rod 65. A movable block 67 is fixedly mounted on the outer end of the connecting bracket 66. The movable block 67 is slidably connected to both ends of the guide rail 64. A power connection component 68 is fixedly mounted on the bottom of the movable block 67. When using the circuit board continuity test quick clamping device, first place the circuit board on the support platform 3 on top of the base 1, and then start. The clamping mechanism 2, located in the middle of the base 1, is driven by a lead screw 22 to move the two clamping ends towards each other along the transverse track 21, quickly and stably clamping the circuit board onto the support platform 3. After clamping, the power-connecting mechanism 6 starts to operate. The first electric push rod 5 on the fixed arm 4 extends and retracts vertically, driving the mounting sleeve 61 and its connected components to move up and down, adjusting the power-connecting mechanism 6 to a suitable height. Then, the first motor 62 drives the mounting frame 63 to rotate, facilitating the adjustment of the power-connection angle. At the same time, the second electric push rods 65 on both sides of the top of the guide rail 64 push the connecting frame 66, causing the movable block 67 to slide horizontally within the guide rail 64, thereby adjusting the lateral position of the power-connecting component 68, so that the conductive connector 686 in the power-connecting component 68 can accurately correspond to the circuit board electrodes, preparing for subsequent continuity testing.

[0026] Combination Figures 1-5As shown, the power connection assembly 68 includes a mounting arm 681, which is fixedly mounted to the bottom of the movable block 67. A rail frame 682 is fixedly mounted to the bottom of the mounting arm 681. A slider 683 is slidably connected inside the rail frame 682. A side arm 684 is fixedly mounted to the bottom of the slider 683. A fixing screw 685 is threadedly connected to the upper outer side of the side arm 684. The end of the fixing screw 685 passes through the side arm 684. A conductive connector 686 is fixedly connected to the bottom of the slider 683. Two conductive connectors 686 are connected in series. One is set as the cathode and the other as the anode. The fixing screw 685 is a hand-tight screw. Limiting holes 687 are linearly arranged at equal intervals on the outer side of the rail frame 682. The end of the fixing screw 685 is inserted into the limiting hole 687. Support arms 688 are fixedly installed on both sides of the bottom of the guide rail 64. Wiring sleeves 689 are fixedly installed on the outer end of the support arms 688. A power connecting wire 6810 is fixedly connected to the outer side of the conductive connector 686. The outer end of the power connecting wire 6810 is arranged inside the wiring sleeve 689.

[0027] In the technical solution described in the above-described embodiments of this application, during the application of this device, when the power connection component 68 is working, the movable block 67 slides along the guide rail 64 under the drive of the second electric push rod 65, initially adjusting the lateral spacing of the two conductive connectors 686 to adapt to the circuit board electrode layout. If further fine-tuning is required, the operator can loosen the hand-tightening fixing screw 685, allowing the slider 683 to slide freely within the rail frame 682, driving the conductive connector 686 to move precisely in a direction perpendicular to the guide rail 64. After the conductive connector 686 is precisely aligned with the circuit board electrode, the fixing screw 685 is inserted into the limiting hole 687 on the outside of the rail frame 682 and tightened to achieve reliable locking. At the same time, the power connection wire 6810 connected to the outside of the conductive connector 686 is arranged in an orderly manner along the wiring sleeve 689 at the outer end of the support arm 688. This avoids the wire from getting tangled and affecting the operation, and ensures a stable connection between the wire and the conductive connector 686, ensuring stable current transmission during the test, thereby completing an efficient conductive connection with the circuit board electrode and providing a reliable electrical connection foundation for the circuit board conductivity test.

[0028] Example 2

[0029] Knot Figures 1-3As shown, support legs 7 are fixedly installed at the four corners of the bottom of the base 1. A base plate 8 is fixedly installed at the bottom of the support legs 7. Mounting holes 9 are provided at the four corners of the base plate 8. The mounting holes 9 are countersunk holes. The clamping mechanism 2 includes a transverse track 21. The transverse track 21 is fixedly installed in the middle of the base 1. A lead screw 22 is rotatably connected inside the transverse track 21. The two ends of the lead screw 22 have opposite threads. Sliding blocks 23 are threaded to both ends of the lead screw 22. The sliding blocks 23 are slidably connected inside the transverse track 21. A second motor 25 is fixedly installed at one end of the transverse track 21. The output end of the second motor 25 passes through the transverse track 21 and is fixedly connected to one end of the lead screw 22. A clamping arm 26 is fixedly installed on the top of the sliding block 23. A clamping plate 24 is fixedly connected to the top of the clamping arm 26.

[0030] In the above-described embodiments of the present application, during the application of this device, the support legs 7 at the four corners of the base 1 and the base plate 8 provide stable support. The device can be fixed to the workbench through the countersunk holes at the four corners of the base plate 8, ensuring overall stability and no shaking during the test. When it is necessary to clamp the circuit board, the clamping mechanism 2 is activated, and the second motor 25 at one end of the transverse track 21 is powered on and rotates. Its output end drives the lead screw 22 to rotate synchronously. Since the two ends of the lead screw 22 adopt a reverse thread design, the two sliding blocks 23 connected to it slide towards each other along the axis of the lead screw 22 under the limiting constraint of the transverse track 21. The clamping arm 26 and the clamping plate 24 fixed at the top of the sliding block 23 move closer to each other, and finally clamp the circuit board placed on the support platform 3 precisely in the center. This symmetrical clamping method not only ensures that the circuit board will not be displaced by external force during the test, but also evenly distributes the clamping force, avoiding damage to the circuit board due to uneven force, and creating stable working conditions for subsequent conduction tests.

[0031] The working principle and advantages of this utility model are as follows: During the application of this device, the circuit board can first be placed stably on the support platform 3 at the top of the base 1. At this time, the clamping mechanism 2 is activated and the second motor 25 is powered on and rotated, driving the lead screw 22 in the transverse track 21 to rotate synchronously. Since the two ends of the lead screw 22 adopt a reverse thread design, the two sliding blocks 23 connected to it slide towards each other along the axis of the lead screw 22 under the limiting action of the transverse track 21. As the sliding blocks 23 move, the clamping arm 26 and the clamping plate 24 fixed on its top gradually approach the two sides of the circuit board and finally clamp the circuit board precisely in the center. This symmetrical clamping method not only ensures that the circuit board will not be displaced during the test, but also avoids damage to the board surface caused by uneven force on one side.

[0032] After clamping is complete, the energizing mechanism 6 engages. At this point, the first electric push rod 5 is activated, vertically extending and retracting to move the mounting sleeve 61 and its underlying conductive components up and down. This quickly adjusts the energizing component 68 to a height parallel to the circuit board electrodes. Subsequently, the second electric push rod 65 is activated, pushing the movable block 67 horizontally within the guide rail 64 via the connecting bracket 66. Depending on the electrode spacing of the circuit board, the lateral distance between the two conductive connectors 686 is adjusted, energizing the cathode and anode connectors 686 and the circuit board. When energizing different circuit boards, the electrode spacing varies. In this case, the slider 683 inside the energizing component 68 can be adjusted within the rail frame 682 for secondary fine-tuning. The operator can then loosen the hand-tightening mechanism... The fixed screw 685 allows the slider 683 to slide freely along the rail frame 682. After the conductive connector 686 is precisely aligned with the circuit board electrode, the screw is screwed into the limiting hole 687 on the outside of the rail frame 682 to lock it in place. It can be seen that this device works in conjunction with the first motor 62, the first electric push rod 5 and the second electric push rod 65 to flexibly adjust the conductive connector 686 to stably contact the circuit board electrode, enabling it to quickly connect to power while being quickly clamped. In addition, the support arm 688 and wiring sleeve 689 at the bottom of the guide rail 64 can orderly store the power connection wire 6810, avoiding the interference of wire entanglement during the test. When the conductive connector 686 is in close contact with the electrode, the power can be turned on to automatically carry out the continuity test. The entire process does not require manual connection, which greatly shortens the test time.

[0033] It is evident that the design advantages of this device are reflected in multiple dimensions. From the perspective of clamping function, the combination of lead screw 22 transmission and symmetrical clamping structure achieves the dual effects of rapid positioning and stable fixation. Compared with traditional single clamping devices, it can not only be compatible with circuit boards of different sizes, but also improve test repeatability through precise centering. The multi-degree-of-freedom adjustment design of the power connection mechanism 6 is particularly outstanding. Its first electric push rod 5 in the vertical direction and the second electric push rod 65 in the horizontal direction, together with the fine displacement of the slider 683, form a three-dimensional adjustment system that can adapt to the electrode layout of most circuit boards on the market. The combination of the hand-tightening fixing screw 685 and the limiting hole 687 achieves a balance between flexibility and stability, allowing operators to quickly adjust according to actual needs, while providing reliable mechanical locking during testing. At the same time, the wiring sleeve 689 effectively reduces the risk of poor line contact and short circuits by standardizing the management of wires, further improving test accuracy. Overall, this device significantly reduces manual intervention through automated clamping, intelligent power connection, and user-friendly design, and its precise docking reduces test errors and improves detection accuracy.

[0034] The base 1 and the support platform 3 are integrally formed from high-strength 6061-T6 aluminum alloy. The base 1 measures 400mm × 300mm × 50mm, and the support platform 3 is hard chrome plated. The support legs 7 are made of SUS304 stainless steel with a diameter of 12mm and an adjustable height of 50-80mm. The base plate 8 is made of 5mm cold-rolled steel plate with M6 countersunk holes. The transverse track 21 of the clamping mechanism 2 uses an HGR20 linear guide 64, and the lead screw 22 is a TBI ground ball screw 22 (8mm lead, C7 accuracy). The sliding block 23 and the clamping arm 26 are machined from 45# steel, and the clamping plate 24 is covered with a 2mm silicone anti-slip layer. The guide rail 64 of the power-on mechanism 6 is a HIWIN MGN9C miniature guide rail 64. The second electric push rod 65 has a stroke of 50mm and a thrust of 50N. The rail frame 682 is made of anodized aluminum alloy, and the slider 683 is made of POM engineering plastic. In terms of electronic components, the second motor 25 is a 42BYGH40-1704A stepper motor, powered by a 24V DC power supply via a TB6600 driver; the first motor 62 is an ECMA-C10604RS micro servo motor, connected to an AC220V power supply; the first electric push rod 5 and the second electric push rod 65 are driven by a 24V DC power supply. A controller is also installed on the base 1. The controller's control circuit uses an STM32F407 as the main control chip, combined with Omron D4N series limit switches, etc., to ensure stable operation and precise control of the device.

[0035] Of course, there may be other implementations of this utility model. Based on this implementation, other implementations obtained by those skilled in the art without any creative effort are all within the scope of protection of this utility model.

Claims

1. A quick-clamping device for circuit board continuity testing, characterized in that, Includes a base (1), a clamping mechanism (2) is fixedly installed in the middle of the base (1), a support platform (3) is fixedly installed in the middle of the top of the base (1), the clamping end of the clamping mechanism (2) is located on the top of the support platform (3), a fixed arm (4) is fixedly installed on the rear side of the base (1), a first electric push rod (5) is fixedly installed at the front end of the top of the fixed arm (4), and a power connection mechanism (6) is fixedly installed through the fixed arm (4) at the output end of the first electric push rod (5). The power connection mechanism (6) includes a mounting sleeve (61), which is fixedly installed at the bottom output end of the first electric push rod (5). A first motor (62) is fixedly installed at the bottom of the mounting sleeve (61). A mounting bracket (63) is fixedly installed at the output end of the first motor (62). A guide rail (64) is fixedly installed at the bottom of the mounting bracket (63). A second electric push rod (65) is fixedly installed on both sides of the top of the guide rail (64). A connecting bracket (66) is fixedly installed at the output end of the second electric push rod (65). A movable block (67) is fixedly installed at the outer end of the connecting bracket (66). The movable block (67) is slidably connected to the two inner ends of the guide rail (64). A power connection component (68) is fixedly installed at the bottom of the movable block (67).

2. The circuit board continuity test quick clamping device according to claim 1, characterized in that, The power connection assembly (68) includes a mounting arm (681), which is fixedly mounted on the bottom of the movable block (67). A rail frame (682) is fixedly mounted on the bottom of the mounting arm (681). A slider (683) is slidably connected inside the rail frame (682). A side arm (684) is fixedly mounted on the bottom of the slider (683). A fixing screw (685) is threadedly connected to the upper outer side of the side arm (684). The end of the fixing screw (685) passes through the side arm (684). A conductive connector (686) is fixedly connected to the bottom of the slider (683).

3. The circuit board continuity test quick clamping device according to claim 2, characterized in that, The fixing screw (685) is a hand-tightening screw, and the outer side of the rail frame (682) is provided with limit holes (687) arranged linearly at equal intervals, and the end of the fixing screw (685) is inserted into the limit hole (687).

4. The circuit board continuity test quick clamping device according to claim 3, characterized in that, Both sides of the bottom of the guide rail (64) are fixedly installed with support arms (688), and the outer end of the support arm (688) is fixedly installed with a wiring sleeve (689). The outer side of the conductive connector (686) is fixedly connected with a power receiving wire (6810), and the outer end of the power receiving wire (6810) is arranged inside the wiring sleeve (689).

5. The circuit board continuity test quick clamping device according to claim 1, characterized in that, Support legs (7) are fixedly installed at the four corners of the bottom of the base (1), and a base plate (8) is fixedly installed at the bottom of the support legs (7).

6. The circuit board continuity test quick clamping device according to claim 5, characterized in that, Mounting holes (9) are provided at all four corners of the base plate (8), and the mounting holes (9) are countersunk holes.

7. The circuit board continuity test quick clamping device according to claim 1, characterized in that, The clamping mechanism (2) includes a transverse track (21), which is fixedly installed in the middle of the base (1). A lead screw (22) is rotatably connected inside the transverse track (21). The two ends of the lead screw (22) have opposite threads. Both ends of the lead screw (22) are threadedly connected to sliding blocks (23). The sliding blocks (23) are slidably connected inside the transverse track (21). A second motor (25) is fixedly installed at one end of the transverse track (21). The output end of the second motor (25) passes through the transverse track (21) and is fixedly connected to one end of the lead screw (22). A clamping arm (26) is fixedly installed on the top of the sliding block (23). A clamping plate (24) is fixedly connected to the top of the clamping arm (26).

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