PCB testing device
By designing adjustment components and probe adjustment mechanisms, the PCB board testing device has been made adaptable to different models and specifications, solving the problem of insufficient adaptability in existing technologies, reducing costs and improving product qualification rates.
Patent Information
- Application Number
- CN202422700665.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-06
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2034-11-06
AI Technical Summary
Existing PCB testing equipment cannot adapt to different models and specifications of PCBs, resulting in the need to manufacture multiple testing devices, which increases costs.
A PCB board testing device was designed, which uses an adjustment component including gears, a first rack, a second rack, and a brake motor. The clamping block is adjusted by the rotation of the gears, and the probe position is adjusted by a rodless cylinder and a servo motor to adapt to different models and specifications of PCB boards.
The adaptability of the testing equipment has been improved, enabling it to accommodate different models and specifications of PCB boards, reducing costs, protecting PCB boards from damage, and increasing product qualification rate.
Smart Images
Figure CN223727952U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of PCB testing, in particular to a PCB testing device. BACKGROUND
[0002] PCB, also known as printed circuit board, is a carrier for electrical connection of electronic components. In the manufacturing process of PCB, the electrical performance and electrical connection of electronic components need to be tested to check the production defects and the yield of components.
[0003] In the prior art, the testing device usually uses detection probes for detection, which are driven by a driving mechanism to press down a fixed distance to contact the detection surface of the PCB. However, for different PCBs, the testing device cannot meet the testing of different sizes and specifications of PCBs, and other testing devices need to be made, thereby increasing the cost. Therefore, it is urgent to design a testing device to test different sizes and specifications of PCBs. CONTENT OF THE UTILITY MODEL
[0004] In order to improve the adaptability of the testing device, the present application provides a PCB testing device.
[0005] The PCB testing device provided by the present application adopts the following technical scheme:
[0006] A PCB testing device comprises a base, the base is provided with a mounting table, the mounting table is hollow, the mounting table is provided with an adjusting assembly, a sliding groove is formed on the side of the mounting table away from the base, a connecting rod is slidably connected in the sliding groove, one end of the connecting rod is connected to the adjusting assembly, and the other end of the connecting rod is fixedly connected with a clamping block for clamping the PCB, the clamping blocks are diagonally arranged, a support frame is fixedly connected to the base, a plurality of probes are arranged above the mounting table, and a driving member is arranged on the support frame to drive the probes to move close to or away from the mounting table.
[0007] By adopting the above technical scheme, when the PCB needs to be detected, the worker places the PCB on the mounting table, and then clamps the PCB through the clamping blocks. When different sizes and specifications of PCBs need to be clamped, the worker can move the clamping blocks on the mounting table in opposite directions through the adjusting assembly, so as to adjust the distance between the clamping blocks, so that the testing device can test different sizes and specifications of PCBs, thereby improving the adaptability of the testing device.
[0008] Optionally, the adjusting assembly comprises a gear, a first rack, a second rack and a band brake motor, the first rack and the second rack are engaged with the gear, and the first rack and the second rack are arranged in parallel, the first rack and the second rack are fixedly connected to the end of the connecting rod away from the clamping block, the gear is rotatably connected to the mounting table, and the band brake motor is located on the side of the mounting table away from the clamping block.
[0009] By adopting the above technical scheme, the adjusting assembly comprises a gear, a first rack, a second rack and a band brake motor, the first rack and the second rack are fixedly connected to the end of the connecting rod away from the clamping block, when the worker needs to clamp the PCB, the worker starts the band brake motor, and then the band brake motor drives the gear to rotate, so that the first rack and the second rack arranged in parallel move away from each other, at this time, the connecting rod fixedly connected to the first rack and the second rack also moves away from the clamping block, thereby satisfying clamping of PCBs of different models and specifications, and the adaptability of the testing device is improved.
[0010] Optionally, the side of the first rack and the second rack away from the connecting rod is fixedly connected with a limiting block, the mounting table is provided with a limiting groove corresponding to the limiting block in a one-to-one manner, the limiting groove is in sliding fit with the limiting block, and the slippable length of the limiting groove is greater than or equal to the slippable length of the sliding groove.
[0011] By adopting the above technical scheme, when the gear rotates, because the first rack and the second rack are engaged with the gear, the first rack and the second rack will slide in the mounting table, at this time, the limiting blocks fixedly connected to the first rack and the second rack are also slidably connected in the limiting grooves provided in the mounting table, thereby ensuring the stability of the first rack and the second rack during sliding. When the first rack and the second rack slide, the connecting rod also slides in the sliding groove, therefore, in order to ensure the normal operation of the adjusting assembly, the slippable length of the limiting groove is greater than or equal to the slippable length of the sliding groove, thereby ensuring the feasibility of the testing device.
[0012] Optionally, the side of the mounting table close to the base is fixedly connected with an adjusting block, the base is provided with an adjusting groove corresponding to the adjusting block in a one-to-one manner, one of the adjusting grooves is provided with a screw rod, the screw rod is rotatably connected to the base and threadedly connected with the adjusting block, the base is fixedly connected with a servo motor for driving the screw rod to rotate, the side of the supporting frame opposite to the clamping block is provided with a rodless cylinder, the output end of the driving member is fixedly connected to the rodless cylinder, and the probe is detachably connected to the movable block of the rodless cylinder.
[0013] By adopting the technical scheme, when the worker places the PCB on the mounting table and the adjusting assembly clamps the PCB, the driving member drives the rodless cylinder to move towards the side close to the rotary table, so that the PCB is tested, when different positions of the PCB need to be tested, the worker starts the servo motor, so that the screw rod rotates, the adjusting block slides in the adjusting groove, and the transverse position of the PCB is adjusted, the movable block of the rodless cylinder can adjust the longitudinal position of the probe, so that the test range of the test device for the PCB is larger, and the adaptability of the test device is further improved.
[0014] Optionally, a plurality of buffer columns are fixedly connected to the movable block of the rodless cylinder, a buffer plate is slidably connected to the buffer columns, the buffer columns pass through the buffer plate, and a circular block (not shown in the figure) is fixedly connected to the end away from the movable block, a buffer member is arranged between the movable block and the buffer plate, the buffer member is sleeved on the buffer column, one end of the buffer member abuts against the movable block, and the other end abuts against the buffer plate.
[0015] By adopting the technical scheme, when the probe of the test device contacts the PCB during detection of the PCB by the worker, the output end of the driving member stops moving downward, and the buffer member between the buffer plate and the movable block provides a buffer force, so that the PCB is effectively protected, and the qualified rate of products is improved.
[0016] Optionally, a mounting plate is detachably connected to the side of the buffer plate away from the buffer member, a plurality of mounting holes are formed in the mounting plate, the mounting holes are in T-shaped cross section, an installation head is fixedly connected to the end of the probe away from the detection end, and the installation head is inserted into the mounting hole.
[0017] By adopting the technical scheme, since the detection points of different models of PCBs are different, the probe passes through the mounting hole and is then mounted on the mounting plate through the installation head, the worker can place the probe in the corresponding mounting hole according to the different detection points, and then detachably connect the mounting plate to the buffer plate, so that the adaptability of the device is improved.
[0018] Optionally, the clamping block is provided with a rubber pad.
[0019] By adopting the technical scheme, when the clamping block clamps the PCB, the clamping block directly contacts the PCB, which is easy to cause damage to the PCB, the direct contact between the clamping block and the PCB is avoided through the rubber pad, and the possibility of damage to the PCB is reduced.
[0020] In summary, the present application has at least one of the following beneficial technical effects:
[0021] 1. When the PCB needs to be detected, the worker places the PCB on the mounting table, and then clamps the PCB through the clamping block. When the PCB of different models and specifications needs to be clamped, the worker can adjust the distance between the clamping blocks by adjusting the assembly so that the clamping blocks on the mounting table move away from each other, so that the test device can test PCBs of different models and specifications, thereby improving the adaptability of the test device.
[0022] 2. The adjusting assembly includes a gear, a first rack, a second rack, and a brake motor. The first rack and the second rack are fixedly connected to the end of the connecting rod away from the clamping block. When the worker needs to clamp the PCB, the worker starts the brake motor, and then the brake motor drives the gear to rotate, so that the first rack and the second rack arranged in parallel move away from each other. At this time, the connecting rod fixedly connected to the first rack and the second rack also moves away from the clamping block, thereby satisfying the clamping of PCBs of different models and specifications, thereby improving the adaptability of the test device.
[0023] 3. When the gear rotates, because the first rack and the second rack are engaged with the gear, the first rack and the second rack will slide in the mounting table. At this time, the limit block fixedly connected to the first rack and the second rack is also slidingly connected in the limit slot opened in the mounting table, thereby ensuring the stability of the first rack and the second rack when sliding. When the first rack and the second rack slide, the connecting rod also slides in the sliding groove. Therefore, in order to ensure the normal operation of the adjusting assembly, the slidable length of the limit slot is greater than or equal to the slidable length of the sliding groove, thereby ensuring the feasibility of the test device. BRIEF DESCRIPTION OF DRAWINGS
[0024] Figure 1 It is a structural schematic diagram of the test device.
[0025] Figure 2 It is a half-pier structure schematic diagram of the mounting table.
[0026] Figure 3 It is a half-pier structure schematic diagram of the support frame.
[0027] BRIEF DESCRIPTION OF DRAWINGS: 1, base; 11, support frame; 111, driving part; 12, mounting table; 121, sliding groove; 122, limit slot; 13, adjusting block; 14, screw; 15, servo motor; 16, adjusting slot; 2, adjusting assembly; 21, gear; 22, first rack; 23, second rack; 24, brake motor; 25, limit block; 3, connecting rod; 31, clamping block; 32, rubber pad; 4, rodless cylinder; 41, buffer column; 42, buffer; 5, buffer plate; 51, mounting plate; 511, mounting hole; 52, probe; 521, mounting head. DETAILED DESCRIPTION
[0028] The following description will be made in conjunction with the accompanying drawings Figures 1-3 The application is further described in detail.
[0029] The embodiment of the application discloses a PCB testing device.
[0030] With reference to Figure 1 and Figure 2 The PCB testing device comprises a base 1, wherein the base 1 is provided with a mounting table 12, the mounting table 12 is hollow, the base 1 is fixedly connected with a support frame 11, the support frame 11 is in L-shaped cross section, a sliding groove 121 is formed on the side of the mounting table 12 away from the base 1, a connecting rod 3 is slidably connected in the sliding groove 121, the mounting table 12 is provided with clamping blocks 31 for clamping the PCB and the clamping blocks 31 are diagonally arranged. The mounting table 12 is internally provided with an adjusting assembly 2, one end of the connecting rod 3 is fixedly connected to the clamping blocks 31, and the other end is connected to the adjusting assembly 2. A plurality of probes 52 are arranged above the mounting table 12, the support frame 11 is fixedly connected with a driving member 111 for driving the probes 52 to move close to or away from the mounting table 12, the driving member 111 is a telescopic cylinder, and the probes 52 are located above the mounting table 12.
[0031] With reference to Figure 1 and Figure 2 When the staff tests the PCB, the PCB needs to be placed on the mounting table 12 first, and before that, the staff needs to adjust the positions of the clamping blocks 31 on the mounting table 12 through the adjusting assembly 2, so that the clamping blocks 31 move away from each other in the sliding groove 121, thereby adjusting the positions of the clamping blocks 31, so as to realize the detection of the device on different models and specifications of the PCB, thereby improving the adaptability of the testing device. After the staff places the PCB, the clamping blocks 31 are made close to each other through the adjusting assembly 2, thereby completing the clamping of the PCB, and then the driving member 111 drives the probes 52 to move downward, thereby completing the test of the PCB.
[0032] With reference to Figure 2The adjusting assembly 2 comprises a gear 21, a first rack 22, a second rack 23 and a brake motor 24. The gear 21 is rotationally connected to the mounting table 12, and the brake motor 24 is fixedly connected to the side of the mounting table 12 close to the base 1, so that the gear 21 rotates. The first rack 22 and the second rack 23 are in mesh with the gear 21 and are arranged in parallel with each other. The first rack 22 and the second rack 23 are fixedly connected to the end of the connecting rod 3 away from the clamping block 31. The clamping block 31 is fixedly connected with a rubber pad 32. The base 1 is provided with a limiting groove 122 on the side away from the sliding groove 121. The slidable length of the limiting groove 122 is greater than or equal to the slidable length of the sliding groove 121. The limiting block 25 is slidably connected in the limiting groove 122. The limiting block 25 corresponds to the limiting groove 122 one by one, and is fixedly connected to the first rack 22 and the second rack 23, respectively.
[0033] With reference to Figure 2 When the worker tests the PCB, the brake motor 24 is first started to make the gear 21 rotate. At this time, the first rack 22 and the second rack 23 which are in mesh with the gear 21 and are arranged in parallel with each other move in opposite directions, and the limiting block 25 on the rack also moves in sliding mode with the corresponding rack, so that the clamping blocks 31 on the connecting rod 3 move away from each other. Then the worker places the PCB on the mounting table 12, and the rubber pad 32 on the clamping block 31 can well protect the PCB and reduce the possibility of damage. Subsequently, the brake motor 24 reverses to make the first rack 22 and the second rack 23 move close to each other, so that the clamping blocks 31 also move close to each other to clamp the PCB. The slidable length of the limiting groove 122 is greater than or equal to the slidable length of the sliding groove 121, so as to ensure the feasibility of the testing device.
[0034] With reference to Figure 2 And Figure 3 The base 1 is provided with an adjusting groove 16, and the adjusting block 13 is slidably connected in the adjusting groove 16. The adjusting block 13 is fixedly connected to the side of the mounting table 12 close to the base 1. A screw rod 14 is rotationally connected in one of the adjusting grooves 16. The screw rod 14 is threadedly connected with the adjusting block 13 and rotationally connected to the base 1. The base 1 is fixedly connected with a servo motor 15 for driving the screw rod 14 to rotate. A rodless cylinder 4 is arranged above the mounting table 12. The output end of the telescopic cylinder is fixedly connected to the rodless cylinder 4. The probe 52 is detachably connected to the movable block of the rodless cylinder 4. A plurality of ball bearings are embedded in the bottom surface of the adjusting block 13.
[0035] With reference to Figure 2 And Figure 3When the worker clamps the PCB by adjusting the clamp block 31 through the adjusting assembly 2, the screw rod 14 can be driven to rotate by the servo motor 15, so that the mounting table 12 slides in the adjusting groove 16, thereby adjusting the horizontal position of the PCB, and the movable block of the rodless cylinder 4 can adjust the position of the movable block to adjust the vertical position of the probe 52, thereby expanding the test range of the test device on the PCB and greatly improving the adaptability of the test device. When the servo motor 15 is started, the adjusting block 13 slides in the adjusting groove 16, and the ball is used to reduce the friction between the adjusting block 13 and the adjusting groove 16, so that the adjusting block 13 slides more smoothly.
[0036] Referring to Figure 3 A plurality of buffer columns 41 are fixedly connected to the movable block of the rodless cylinder 4, the buffer columns 41 are located on opposite sides of the mounting table 12, a buffer plate 5 is slidably connected to the buffer columns 41, the buffer columns 41 all pass through the buffer plate 5, a round block (not shown in the figure) is fixedly connected to the side of the buffer column 41 away from the movable block, the round block prevents the buffer plate 5 from falling off, a buffer piece 42 is arranged between the buffer plate 5 and the movable block, the buffer piece 42 is a spring, the spring is sleeved on the buffer column 41, one end of the spring abuts against the movable block, and the other end of the spring abuts against the buffer plate 5, the side of the buffer plate 5 away from the buffer piece 42 is detachably connected with a mounting plate 51, a plurality of mounting holes 511 are formed in the mounting plate 51, and one end of the probe 52 away from the detection end is fixedly connected with a mounting head 521, the mounting head 521 abuts against the mounting hole 511, and the mounting hole 511 is T-shaped in cross section.
[0037] Referring to Figure 3 When the test device tests the PCB, first, the telescopic cylinder drives the rodless cylinder 4 to move downward, and when the probe 52 contacts the PCB, the telescopic cylinder stops driving, and the spring between the buffer plate 5 and the movable block can avoid the damage of the PCB and the probe 52 caused by the excessive pressure of the telescopic cylinder when descending, thereby effectively ensuring the service life of the PCB and the probe 52. When different models and specifications of PCBs need to be tested, the worker can place the probe 52 according to the different test points on the PCB, thereby further improving the adaptability of the test device.
[0038] The implementation principle of the PCB test device in the embodiment is as follows:
[0039] When the worker tests the PCB, first, the brake motor 24 is started to drive the gear 21 to rotate, and at this time, the first rack 22 and the second rack 23 which are in meshing relationship with the gear 21 and are arranged in parallel with each other move in opposite directions, and the limiting blocks 25 on the racks and the connecting rods 3 also slide with the corresponding racks, so that the clamp blocks 31 on the connecting rods 3 move away from each other.
[0040] Then the staff will PBC board placed on the installation platform 12, the rubber pad 32 on the clamp block 31 can be well protected the PCB board. Subsequently, the brake motor 24 reverse rotation, the first rack 22 and the second rack 23 close to each other, so that the clamp block 31 also close to each other complete the clamping of the PCB board.
[0041] When the staff through the adjustment assembly 2, the clamp block 31 on the PCB board clamping can be driven by servo motor 15 screw rod 14 rotation, so that the installation platform 12 in the adjustment groove 16 sliding, so you can adjust the lateral position of the PCB board, without rod cylinder 4 can adjust the position of its moving block, to adjust the longitudinal position of the probe 52, so as to expand the test device for the test range of the PCB board.
[0042] When the test device for the test of the PCB board, first start telescopic cylinder push rod cylinder 4 down, when the probe 52 contact to the PCB board, telescopic cylinder stop driving. When the need to test different models, specifications of the PCB board, the staff can be placed according to the different test points on the PCB board test probe 52.
[0043] The above are the preferred embodiments of the present application, not limited by the protection scope of the present application, therefore: all equivalent changes made according to the structure, shape, principle of the present application, should be covered within the scope of protection of the present application.
Claims
1. A PCB board testing apparatus, characterized by, The utility model provides a PCB board clamping device, including base (1), be equipped with installation platform (12) on base (1), installation platform (12) is hollowly arranged, be equipped with adjusting assembly (2) in installation platform (12), be equipped with sliding slot (121) on the side of installation platform (12) away from base (1), sliding connection has connecting rod (3) in sliding slot (121), one end of connecting rod (3) is connected on adjusting assembly (2), and the other end is fixedly connected with the clamping block (31) for clamping PCB board, clamping block (31) is diagonally arranged, fixedly connected with support frame (11) on base (1), a plurality of probes (52) are equipped with on the upside of installation platform (12), and the drive piece (111) of driving probe (52) is close to or away from installation platform (12) on support frame (11).
2. The PCB testing device of claim 1, wherein, The adjusting assembly (2) includes a gear (21), a first rack (22), a second rack (23) and a band brake motor (24), the first rack (22) and the second rack (23) are engaged with the gear (21), and the first rack (22) and the second rack (23) are arranged in parallel, the first rack (22) and the second rack (23) are fixedly connected with one end of the connecting rod (3) away from the clamping block (31), the gear (21) is rotatably connected with the installation platform (12), and the band brake motor (24) is located on the side of the installation platform (12) away from the clamping block (31), the band brake motor (24) is used to drive the gear (21) to rotate.
3. The PCB testing device of claim 2, wherein, The first rack (22) and the second rack (23) are fixedly connected with a limiting block (25) on the side away from the connecting rod (3), a limiting groove (122) corresponding to the limiting block (25) is formed in the installation platform (12), the limiting groove (122) is in sliding fit with the limiting block (25), and the slidable length of the limiting groove (122) is greater than or equal to the slidable length of the sliding slot (121).
4. The PCB testing device of claim 1, wherein, The installation platform (12) is fixedly connected with an adjusting block (13) on the side close to the base (1), an adjusting groove (16) corresponding to the adjusting block (13) is formed in the base (1), a screw rod (14) is arranged in the adjusting groove (16), the screw rod (14) is rotatably connected with the base (1) and threadedly connected with the adjusting block (13), a servo motor (15) for driving the screw rod (14) to rotate is fixedly connected with the base (1), a rodless cylinder (4) is arranged on the side of the support frame (11) opposite to the clamping block (31), the output end of the drive piece (111) is fixedly connected with the rodless cylinder (4), and the probe (52) is detachably connected with the movable block of the rodless cylinder (4).
5. The PCB testing apparatus of claim 4, wherein, The movable block of the rodless air cylinder (4) is fixedly connected with a plurality of buffer columns (41), the buffer columns (41) are slidably connected with a buffer plate (5), the buffer columns (41) all pass through the buffer plate (5) and are fixedly connected with a circular block at an end away from the movable block, a buffer piece (42) is arranged between the movable block and the buffer plate (5), the buffer piece (42) is sleeved on the buffer column (41), one end of the buffer piece (42) abuts against the movable block, and the other end abuts against the buffer plate (5).
6. The PCB testing apparatus of claim 5, wherein, A mounting plate (51) is detachably connected to one side of the buffer plate (5) away from the buffer piece (42), a plurality of mounting holes (511) are formed in the mounting plate (51), the mounting holes (511) are T-shaped in cross section, one end of a probe (52) away from a detection end is fixedly connected with a mounting head (521), and the mounting head (521) is inserted into the mounting hole (511).
7. The PCB testing device of claim 1, wherein, The clamping block (31) is provided with a rubber pad (32).