CN219891363U - Circuit board test fixture - Google Patents
Circuit board test fixture Download PDFInfo
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- CN219891363U CN219891363U CN202320395676.XU CN202320395676U CN219891363U CN 219891363 U CN219891363 U CN 219891363U CN 202320395676 U CN202320395676 U CN 202320395676U CN 219891363 U CN219891363 U CN 219891363U
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- circuit board
- workbench
- detection
- conveying
- plate
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- 238000012360 testing method Methods 0.000 title claims abstract description 100
- 238000001514 detection method Methods 0.000 claims abstract description 57
- 239000000523 sample Substances 0.000 claims abstract description 43
- 238000003825 pressing Methods 0.000 claims abstract description 10
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 239000000306 component Substances 0.000 description 11
- 230000001681 protective effect Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The circuit board testing tool comprises a workbench, and a detection assembly and a conveying assembly which are arranged on the workbench, wherein the detection assembly comprises four elastic telescopic rods, a detection plate and a group of mechanical pressing arms, the four elastic telescopic rods are fixedly arranged on the upper end faces of the workbench, the detection plate is arranged at the upper ends of the four elastic telescopic rods, a plurality of test probes are arranged on the detection plate, and the lower ends of the mechanical pressing arms are propped against the upper end faces of the detection plate; the conveying assembly comprises a plurality of conveying rollers and a conveying belt, the conveying rollers are respectively arranged on two sides of the workbench, the conveying belt is sleeved on the conveying rollers, and the lower half section of the conveying belt passes through the workbench; the outer side surface of the conveyor belt is also provided with a plurality of jogged grooves. According to the utility model, the conveying assembly is additionally arranged, so that the upper plate and the lower plate of the test tool are simpler and more convenient to operate, and the test efficiency of the circuit board is improved; the utility model has strong practicability and has stronger popularization significance.
Description
Technical Field
The utility model relates to a circuit board testing device, in particular to a circuit board testing tool.
Background
The electronic component assembly comprises a single-sided circuit board, a double-sided circuit board, a PCB (printed circuit board), a multi-layer printed circuit board, a printed circuit board and the like, is a core component of the controller, and can play an important role, namely, can control the automatic operation of a numerical control machine tool, cutting equipment and the like. The PCB board is also commonly called a circuit board, and is an important electronic component, a support for an electronic component, and a carrier for electrical connection of the electronic component.
After the electronic components are soldered to the circuit board, in order to ensure the soldering stability between the electronic components and the circuit board, it is necessary to detect pins of the components on the circuit board, detect whether the pins are soldered in a cold joint, and damage the electronic components during the soldering process. Most of the traditional detection methods use detection pens to detect manually, but the manual detection mode is low in efficiency and easy to cause detection omission.
In order to improve the efficiency and reliability of the test, various circuit board test tools are developed in the market to detect the circuit board, such as a circuit board test tool of CN20201621386. X, which discloses a test tool with simple structure and convenient operation, and the tool can be suitable for detecting circuit boards with various thicknesses. However, in the scheme, in the process of testing the circuit board by using the tool, the circuit board still needs to be manually positioned and fixed on the detection table for detection; after the detection of the previous circuit board is completed, the circuit board needs to be manually taken out from the detection table, and then the detection operation of the next circuit board is performed. The complicated upper and lower plate operation not only greatly discounts the detection efficiency of the test tool, but also is a great test for the operation proficiency of workers.
Disclosure of Invention
Based on this, it is necessary to provide a circuit board test fixture for overcoming the defects in the prior art.
The utility model provides a circuit board test fixture, includes the workstation and installs detection component, the conveying component on the workstation, detection component includes four elasticity telescopic links, a pick-up plate and a set of machinery press arm, four elasticity telescopic links are all fixed and are stood in the up end of workstation, the pick-up plate is installed in the upper end of four elasticity telescopic links, and is equipped with a plurality of test probes on this pick-up plate, the lower extreme of machinery press arm supports in the up end of pick-up plate. The conveying assembly comprises a plurality of conveying rollers and a conveying belt, the conveying rollers are respectively arranged on two sides of the workbench, the conveying belt is sleeved on the conveying rollers, and the lower half section of the conveying belt penetrates through the workbench. The outer side surface of the conveyor belt is also provided with a plurality of jogged grooves.
Further, the detection assembly further comprises a protection plate, a plurality of sliding holes are formed in the protection plate, a plurality of sliding rods are correspondingly arranged at the lower end of the detection plate, and the sliding holes are sleeved on the sliding rods from bottom to top. The sliding rods are respectively sleeved with a first buffer spring, and the bottom ends and the top ends of the first buffer springs are respectively propped against the upper end face of the protection plate and the lower end face of the detection plate.
Further, a plurality of protection sleeves are arranged on the lower end face of the protection plate, and protection through holes penetrating through the upper end and the lower end are formed in the protection sleeves. The test probes of the detection plates are respectively penetrated in the protection through holes from top to bottom.
Further, the elastic telescopic rod comprises a fixed sleeve, a supporting rod and a second buffer spring, wherein the fixed sleeve is erected on the upper end face of the workbench, a buffer cavity with an opening at the upper end is arranged in the fixed sleeve, and the second buffer spring and the supporting rod are sequentially embedded in the buffer cavity. The side of the support rod is also provided with a plurality of limiting holes, and one of the limiting holes is internally provided with a limiting pin in a penetrating way.
Further, the test probe is elastic telescopic design, and it includes a telescopic sleeve, test pole needle and third buffer spring, the telescopic sleeve is fixed to be installed on the pick-up plate, and is equipped with lower extreme open-ended flexible cavity in this telescopic sleeve, third buffer spring and test pole needle gomphosis in proper order in flexible cavity.
Further, the workbench is also provided with a plurality of lifting lock bars, and the lifting lock bars are respectively arranged at two sides of the conveyor belt. The two side edges of the conveyor belt are provided with a plurality of limiting locking grooves, and the upper end of the lifting lock rod can be embedded in the limiting locking grooves to limit and fix the conveyor belt.
Further, the conveyor belt is made of elastic rubber.
Further, the top end of the test probe is also provided with a display lamp.
In summary, the circuit board testing tool has the beneficial effects that: by additionally arranging a conveying assembly on the test tool, the upper and lower plates of the test tool are simpler and more convenient to operate when the circuit board is tested, and the test efficiency of the circuit board is greatly improved; the protection plate below the detection plate can restrict the test probe, so that the risk that the test probe may be distorted and bent to deform when the test probe abuts against the circuit board is reduced, and the test probe is protected by the protection sleeve when not working, so that the test probe is prevented from being impacted by external collision or pollution and the like, and the normal use of the probe is prevented; the elastic telescopic rod of the detection assembly and the elastic telescopic design of the test probe can greatly buffer pressure when the test probe is pressed down, so that the problem of breakage of the probe or breakage of a circuit board caused by overlarge pressure is avoided; the lifting lock rod on the workbench can be used for fixing the lower position of the conveyor belt quickly and reliably, so that the risk that the test result is influenced due to deviation of the circuit board in the test process is reduced; the utility model has strong practicability and has stronger popularization significance.
Drawings
FIG. 1 is a schematic structural diagram of a circuit board test fixture according to the present utility model;
FIG. 2 is an exploded view of the sensing assembly of FIG. 1;
FIG. 3 is a schematic view of the structure of the detecting plate in FIG. 2;
FIG. 4 is a schematic view of the structure of the protection plate in FIG. 2;
FIG. 5 is an exploded view of the flexible rod of FIG. 2;
FIG. 6 is an exploded view of the test probe of FIG. 3;
FIG. 7 is a schematic view of the transport assembly of FIG. 1;
fig. 8 is a schematic structural view of the lifting lock lever in fig. 1.
Detailed Description
In order to make the objects, technical solutions and advantages of the present utility model more apparent, the present utility model will be described in further detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
As shown in fig. 1 to 8, the utility model provides a circuit board testing tool 100, which comprises a workbench 10, a detection assembly 20 and a conveying assembly 30, wherein the detection assembly 20 is arranged on the workbench 10, the detection assembly 20 comprises four elastic telescopic rods 21, a detection plate 22 and a group of mechanical pressing arms (not shown), the four elastic telescopic rods 21 are fixedly arranged on the upper end face of the workbench 10, the detection plate 22 is arranged at the upper ends of the four elastic telescopic rods 21, a plurality of test probes 221 are arranged on the detection plate 22, and the lower ends of the mechanical pressing arms are propped against the upper end face of the detection plate 22.
The conveying assembly 30 comprises a plurality of conveying rollers 31 and a conveying belt 32, wherein the conveying rollers 31 are respectively arranged on two sides of the workbench 10, the conveying belt 32 is sleeved on the conveying rollers 31, and the lower half section of the conveying belt 32 passes through the workbench 10. The outer side surface of the conveyor belt 32 is also provided with a plurality of jogged grooves 321. During testing, the circuit board is clamped into the embedded groove 321 at one end of the conveying belt 32, the conveying belt 32 can convey the circuit board to the lower side of the detection assembly 20 for testing, the operation of manually limiting and fixing the circuit board on a table top is omitted, and after testing, the circuit board conveyed out from the other end is taken out. The upper and lower plates in the test process are simple and efficient to operate.
The detecting assembly 20 further comprises a protective plate 23, a plurality of sliding holes 231 are formed in the protective plate 23, a plurality of sliding rods 222 are correspondingly arranged at the lower end of the detecting plate 22, and the sliding holes 231 are sleeved on the sliding rods 222 from bottom to top. The sliding rods 222 are respectively sleeved with a first buffer spring 223, and the bottom ends and the top ends of the first buffer springs 223 respectively abut against the upper end face of the protection plate 23 and the lower end face of the detection plate 22. The protective plate 23 can restrain the test probes 221 on the detection plate 22, and the test probes 221 are always vertical and cannot deflect when pressed down, so that the risk of complete deformation of the probes due to pressure is reduced.
A plurality of protection sleeves 232 are arranged on the lower end face of the protection plate 23, and protection through holes 233 penetrating through the upper end and the lower end are arranged in the protection sleeves 232. The test probes 221 of the plurality of test boards 22 are respectively disposed in the protection through holes 233 from top to bottom. When the test probe 221 is kept in a natural state, the needle at the bottom of the test probe is accommodated in the protective sleeve 232 under the protective plate 23, so that the test function of the test probe can be greatly prevented from being influenced by collision of external force or external pollution.
The elastic telescopic rod 21 comprises a fixed sleeve 211, a supporting rod 212 and a second buffer spring 213, wherein the fixed sleeve 211 stands on the upper end face of the workbench 10, a buffer cavity 211a with an opening at the upper end is arranged in the fixed sleeve 211, and the second buffer spring 213 and the supporting rod 212 are sequentially embedded in the buffer cavity 211 a. The side surface of the support bar 212 is further provided with a plurality of limiting holes 212a, wherein a limiting pin 214 is arranged in one of the limiting holes 212a in a penetrating manner. The elastic support rods 212 support the detection plate 22, so that the detection plate 22 can play a role in buffering when being pressed down, and the test probes 221 are prevented from being broken or the circuit board is prevented from being crushed due to excessive downward pressure. And the limiting hole 212a on the supporting rod 212 is matched with the limiting pin 214 to limit the pressing depth of the supporting rod 212, and different pressing depths correspond to circuit boards with different thicknesses for detection, so that the bottom end of the test probe 221 can be just electrically connected with the test point of the upper end surface of the circuit board, and the test point is not too long or too short.
The test probe 221 is of an elastic telescopic design, and comprises a telescopic sleeve 221a, a test electrode needle 221b and a third buffer spring 221c, wherein the telescopic sleeve 221a is fixedly arranged on the detection plate 22, a telescopic cavity (not shown) with an opening at the lower end is arranged in the telescopic sleeve 221a, and the third buffer spring 221c and the test electrode needle 221b are sequentially embedded in the telescopic cavity. The test probes 221, which are movable and retractable, further improve the buffering capacity, and can smoothly detect test points which are not at the same height on the same circuit board.
The workbench 10 is also provided with a plurality of lifting lock bars 11, and the lifting lock bars 11 are respectively arranged at two sides of the conveyor belt 32. The two side edges of the conveyor belt 32 are provided with a plurality of limit locking grooves 322, and the upper end of the lifting lock rod 11 can be embedded in the limit locking grooves 322 to limit and fix the conveyor belt 32. Lifting lock lever 11 is lifted when conveyor belt 32 is driven, and the limit fixation of conveyor belt 32 is released; the lifting lock rod 11 is retracted in the process of detecting the circuit board, the upper end of the lifting lock rod is clamped in the limiting lock groove 322 of the conveyor belt 32 to limit and fix the conveyor belt 32, and the circuit board clamped in the embedding groove 321 of the conveyor belt 32 is also limited and fixed, so that the smooth detection of the circuit board is ensured.
In this embodiment, the material of the conveyor belt 32 is an elastic rubber material. The top end of the test probe 221 is also provided with a display lamp 221d. The elastic rubber conveyor belt 32 can ensure smooth transmission of the circuit board, and the elastic characteristic of the conveyor belt can further buffer the pressure from the upper side received by the circuit board in the embedded groove 321, so that the circuit board is prevented from being crushed. The display lamp 221d at the top end of the test probe 221 can display the detection result of the test node on the circuit board, if the result is normal, the lamp is on, and if the result is abnormal, the lamp is not on, so that the tester can more conveniently and rapidly acquire the detection result of the circuit board.
When the utility model works, firstly, the lifting lock rod 11 on the workbench 10 is lifted, so that the limit fixation of the conveying belt 32 is released. Then, the conveying assembly 30 is started to clamp the circuit board into the embedding groove 321 of the conveying belt 32, so that the conveying belt 32 drives the circuit board to convey to the lower part of the detecting assembly 20. When the circuit board reaches the position right below the detection assembly 20, the transmission of the conveyor belt 32 is suspended, and the lifting lock rod 11 retracts to limit and fix the conveyor belt 32 again. The test assembly 20 then begins to operate and the mechanical press arm above the test plate 22 applies downward pressure to the test plate 22, so that the test probes 221 on the test plate 22 begin to press down on both the protective plate 23 below the test plate 22. The bottom of the protective sleeve 232 at the lowest end of the protective plate 23 is firstly propped against the circuit board in the pressing process, and then the pinheads at the bottom of the test probes 221 are contacted with the test points on the circuit board to perform electrical tests. After the test is finished, the mechanical pressing arm withdraws downward pressure, and the detection plate 22 and the protection plate 23 are driven to lift and reset under the action of the elastic telescopic rod 21.
In summary, the beneficial effects of the circuit board testing tool 100 of the present utility model are as follows: by additionally arranging the conveying assembly 30 on the test tool, the upper and lower plates of the test tool are simpler and more convenient to operate when the circuit board is tested, and the test efficiency of the circuit board is greatly improved; the protection plate 23 below the detection plate 22 not only can restrict the test probe 221 so as to reduce the risk of possible deflection and bending deformation when the test probe 221 abuts against the circuit board, but also receives the storage protection of the protection sleeve 232 when the test probe 221 does not work, so that the test probe 221 is prevented from being impacted by the outside or polluted and the like to influence the normal use of the probe; the elastic telescopic rod 21 of the detection assembly 20 and the elastic telescopic design of the test probe 221 can greatly buffer pressure when the test probe 221 is pressed down, so that the problem of breakage of the probe or damage of a circuit board caused by overlarge pressure is avoided; the lifting lock rod 11 on the workbench 10 can quickly and reliably fix the lower position of the conveyor belt 32, so that the risk of influencing the test result due to deviation of the circuit board in the test process is reduced; the utility model has strong practicability and has stronger popularization significance.
The above examples illustrate only one embodiment of the utility model, which is described in more detail and is not to be construed as limiting the scope of the utility model. It should be noted that variations and modifications can be made by those skilled in the art without departing from the inventive concept, which fall within the scope of the utility model. Accordingly, the scope of the utility model should be determined from the following claims.
Claims (8)
1. A circuit board test fixture, its characterized in that: the automatic detection device comprises a workbench, a detection assembly and a conveying assembly, wherein the detection assembly is arranged on the workbench and comprises four elastic telescopic rods, a detection plate and a group of mechanical pressing arms, the four elastic telescopic rods are fixedly arranged on the upper end faces of the workbench, the detection plate is arranged at the upper ends of the four elastic telescopic rods, a plurality of test probes are arranged on the detection plate, and the lower ends of the mechanical pressing arms are propped against the upper end faces of the detection plate; the conveying assembly comprises a plurality of conveying rollers and a conveying belt, the conveying rollers are respectively arranged on two sides of the workbench, the conveying belt is sleeved on the conveying rollers, and the lower half section of the conveying belt passes through the workbench; the outer side surface of the conveyor belt is also provided with a plurality of jogged grooves.
2. The circuit board test fixture of claim 1, wherein: the detection assembly further comprises a protection plate, a plurality of sliding holes are formed in the protection plate, a plurality of sliding rods are correspondingly arranged at the lower end of the detection plate, and the sliding holes are sleeved on the sliding rods from bottom to top; the sliding rods are respectively sleeved with a first buffer spring, and the bottom ends and the top ends of the first buffer springs are respectively propped against the upper end face of the protection plate and the lower end face of the detection plate.
3. The circuit board test fixture of claim 2, wherein: a plurality of protection sleeves are arranged on the lower end face of the protection plate, and protection through holes penetrating through the upper end and the lower end are formed in the protection sleeves; the test probes of the detection plates are respectively penetrated in the protection through holes from top to bottom.
4. The circuit board test fixture of claim 1, wherein: the elastic telescopic rod comprises a fixed sleeve, a supporting rod and a second buffer spring, wherein the fixed sleeve is erected on the upper end face of the workbench, a buffer cavity with an opening at the upper end is arranged in the fixed sleeve, and the second buffer spring and the supporting rod are sequentially embedded in the buffer cavity; the side of the support rod is also provided with a plurality of limiting holes, and one of the limiting holes is internally provided with a limiting pin in a penetrating way.
5. The circuit board test fixture of claim 1, wherein: the test probe is elastically flexible, and is composed of a telescopic sleeve, a test electrode needle and a third buffer spring, wherein the telescopic sleeve is fixedly arranged on the detection plate, a telescopic cavity with an opening at the lower end is arranged in the telescopic sleeve, and the third buffer spring and the test electrode needle are sequentially embedded in the telescopic cavity.
6. The circuit board test fixture of claim 1, wherein: the workbench is also provided with a plurality of lifting lock bars which are respectively arranged at two sides of the conveyor belt; the two side edges of the conveyor belt are provided with a plurality of limiting locking grooves, and the upper end of the lifting lock rod can be embedded in the limiting locking grooves to limit and fix the conveyor belt.
7. The circuit board test fixture of claim 1, wherein: the conveyer belt is made of elastic rubber.
8. The circuit board test fixture of claim 1, wherein: and the top end of the test probe is also provided with a display lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320395676.XU CN219891363U (en) | 2023-03-06 | 2023-03-06 | Circuit board test fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320395676.XU CN219891363U (en) | 2023-03-06 | 2023-03-06 | Circuit board test fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219891363U true CN219891363U (en) | 2023-10-24 |
Family
ID=88408218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320395676.XU Active CN219891363U (en) | 2023-03-06 | 2023-03-06 | Circuit board test fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219891363U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117819195A (en) * | 2024-03-04 | 2024-04-05 | 苏州特能***科技有限公司 | Circuit board test fixture |
-
2023
- 2023-03-06 CN CN202320395676.XU patent/CN219891363U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117819195A (en) * | 2024-03-04 | 2024-04-05 | 苏州特能***科技有限公司 | Circuit board test fixture |
| CN117819195B (en) * | 2024-03-04 | 2024-05-14 | 苏州特能***科技有限公司 | Circuit board test fixture |
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