CN117554789B - PCB board test fixture - Google Patents
PCB board test fixture Download PDFInfo
- Publication number
- CN117554789B CN117554789B CN202410038931.4A CN202410038931A CN117554789B CN 117554789 B CN117554789 B CN 117554789B CN 202410038931 A CN202410038931 A CN 202410038931A CN 117554789 B CN117554789 B CN 117554789B
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- detection table
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- 238000012360 testing method Methods 0.000 title claims abstract description 43
- 238000001514 detection method Methods 0.000 claims abstract description 42
- 230000001360 synchronised effect Effects 0.000 claims abstract description 22
- 230000007246 mechanism Effects 0.000 claims abstract description 11
- 238000013519 translation Methods 0.000 claims description 42
- 230000005540 biological transmission Effects 0.000 claims description 24
- 230000008602 contraction Effects 0.000 claims description 9
- 230000003139 buffering effect Effects 0.000 claims description 6
- 238000009423 ventilation Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 17
- 230000008569 process Effects 0.000 abstract description 16
- 230000009471 action Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 5
- 230000000712 assembly Effects 0.000 description 3
- 238000000429 assembly Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2801—Testing of printed circuits, backplanes, motherboards, hybrid circuits or carriers for multichip packages [MCP]
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
- G01R1/0425—Test clips, e.g. for IC's
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2801—Testing of printed circuits, backplanes, motherboards, hybrid circuits or carriers for multichip packages [MCP]
- G01R31/2806—Apparatus therefor, e.g. test stations, drivers, analysers, conveyors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2801—Testing of printed circuits, backplanes, motherboards, hybrid circuits or carriers for multichip packages [MCP]
- G01R31/2806—Apparatus therefor, e.g. test stations, drivers, analysers, conveyors
- G01R31/2808—Holding, conveying or contacting devices, e.g. test adapters, edge connectors, extender boards
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2801—Testing of printed circuits, backplanes, motherboards, hybrid circuits or carriers for multichip packages [MCP]
- G01R31/2818—Testing of printed circuits, backplanes, motherboards, hybrid circuits or carriers for multichip packages [MCP] using test structures on, or modifications of, the card under test, made for the purpose of testing, e.g. additional components or connectors
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- General Engineering & Computer Science (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention relates to the technical field of PCB testing, in particular to a PCB testing jig, which comprises a PCB detection table, wherein a control box is fixedly arranged on the PCB detection table, and the PCB testing jig further comprises: the first guide notch and the second guide notch are both arranged on the PCB board detection table; the supporting plate is fixedly arranged in the control box; the clamping control mechanism is respectively connected with the PCB board detection table and the supporting plate, and is also respectively connected with the first guide notch and the second guide notch; the clamping control mechanism comprises a side clamping assembly, a pulling clamping assembly and a synchronous push-pull assembly; the PCB testing jig can ensure that the PCB is prevented from being damaged under the action of providing enough clamping force for the PCB so as to be convenient for fixing the PCB, has good stability and is beneficial to improving the stability of the PCB in the whole testing process.
Description
Technical Field
The invention relates to the technical field of PCB testing, in particular to a PCB testing jig.
Background
The PCB testing jig, also called a test rack, is widely applied to the whole PCB manufacturing process. The jig is intermediate equipment used for connecting a tested circuit board with a testing instrument, and mainly used for completing tasks such as signal testing, electrical property testing, functional testing, reliability testing and the like of the circuit board. The device mainly comprises components such as connectors, cables, switches, circuit boards and the like. After the SMT paster and the DIP plug-in unit are finished in the manufacturing process of the PCB, the PCB is required to be tested by using a PCB testing jig so as to judge whether the product can meet the requirements. Therefore, the PCB testing jig plays an important role in guaranteeing the quality of the PCB.
The current PCB board test fixture, in the use, because the PCB board is square structure, and the size can change, traditional test fixture is inconvenient to fix the PCB board, and stability is relatively poor, leads to influencing the test result, consequently, to above current situation, need urgently develop a PCB board test fixture to overcome the not enough in the current practical application.
Disclosure of Invention
The invention aims to provide a PCB testing jig for solving the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the utility model provides a PCB board test fixture, includes the PCB board test bench, PCB board test bench fixed mounting has the control box, still includes:
the first guide notch and the second guide notch are both arranged on the PCB detection table and are both communicated with the control box, and the first guide notch and the second guide notch are vertically arranged;
the supporting plate is fixedly arranged in the control box;
the clamping control mechanism is respectively connected with the PCB board detection table and the supporting plate, and is also respectively connected with the first guide notch and the second guide notch;
the clamping control mechanism comprises a side clamping assembly, a pulling clamping assembly and a synchronous push-pull assembly;
the side clamping assembly is in sliding connection with the PCB board detection table and is respectively connected with the first guide notch and the second guide notch, the synchronous push-pull assembly is respectively connected with the PCB board detection table and the supporting plate, and the pulling clamping assembly is respectively connected with the PCB board detection table and the synchronous push-pull assembly and is connected with the side clamping assembly.
As a further scheme of the invention: further comprises: the placement detector is fixedly arranged in the middle of the PCB board detection table;
and the display panel is fixedly connected with the control box and is also electrically connected with the clamping control mechanism.
As a further scheme of the invention: further comprises: the fixed base is fixedly arranged on the control box, and a ventilation opening is further formed in the side wall of the control box;
the access door is detachably connected with the control box;
and the number of the anti-collision strips is multiple, and the anti-collision strips are all installed on the control box.
As a further scheme of the invention: the side clamp assembly includes:
the first T-shaped translation placing plates are symmetrically distributed on the PCB detection table and are in sliding connection with the PCB detection table, and the first T-shaped translation placing plates are also respectively inserted into the first guide notch and are in sliding connection with the first guide notch;
the second T-shaped translation placing plates are symmetrically distributed on the PCB detection table and are in sliding connection with the PCB detection table, and the second T-shaped translation placing plates are respectively inserted into the second guide notch and are in sliding connection with the second guide notch;
and the number of the clamping baffles is four, the four clamping baffles are respectively and fixedly installed on the T-shaped translation placing plate I and the T-shaped translation placing plate II, and each clamping baffle is provided with a clamping groove.
As a further scheme of the invention: the synchronous push-pull assembly includes:
the number of the telescopic cylinders is two, and the two telescopic cylinders are symmetrically arranged on the supporting plate;
the first sliding support plate is fixedly connected with the output ends of the two telescopic cylinders respectively, and is also in sliding connection with the support plate through a guide sliding rail;
and the linkage unit is respectively connected with the support plate, the guide sliding rail and the first sliding support plate, and is also connected with the pulling clamping assembly.
As a further scheme of the invention: the linkage unit includes:
the rotary linkage plate is rotationally connected with the middle part of the supporting plate through a supporting shaft, and one end of the rotary linkage plate is rotationally connected with the sliding support plate through a first connecting rod;
the second sliding support plate is arranged on the guide sliding rail in a sliding manner;
and the two ends of the second connecting rod are respectively and rotatably connected with the rotary linkage plate and the second sliding support plate.
As a further scheme of the invention: the pull clamping assembly includes:
the number of the contraction guide units is two, and the two contraction guide units have the same structure and are respectively connected with the first sliding support plate and the second sliding support plate;
the movable connecting belts are two in number and are respectively connected with the two contraction guiding units in a sliding manner;
the buffer elastic ropes are four in number, one end of each buffer elastic rope is connected with the T-shaped translation placing plate I and the T-shaped translation placing plate II respectively, the other end of each buffer elastic rope is fixedly connected with two ends of one movable connecting belt, one end of each buffer elastic rope is connected with the T-shaped translation placing plate I and the T-shaped translation placing plate II, and the other end of each buffer elastic rope is fixedly connected with two ends of the other movable connecting belt;
and the positioning tightening unit is fixedly connected with the inner wall of the control box and is also in sliding connection with the movable connecting belt.
As a further scheme of the invention: the retraction guide unit includes:
the clamping control platform is fixedly arranged on the first sliding support plate;
the rotating shaft is rotatably arranged on the clamping control platform, one end of the rotating shaft is fixedly provided with a transmission rotating wheel, the transmission rotating wheel is connected with the movable connecting belt, the other end of the rotating shaft is provided with a braking piece, and the braking piece is fixedly connected with the clamping control platform;
and the pressure detector is fixedly connected with the transmission rotating wheel and is detachably connected with the movable connecting belt.
As a further scheme of the invention: the positioning tightening unit includes:
the clamping control box is fixedly connected with the inner wall of the control box, and a telescopic driving piece is fixedly arranged on the clamping control box;
the clamping blocks are symmetrically arranged in the clamping control box respectively and are both in sliding connection with the clamping control box, and the two clamping blocks are also fixedly connected with the output end of the telescopic driving piece;
the smooth wave surfaces are positioned on the end parts of the clamping blocks, and the two smooth wave surfaces are arranged in a staggered mode, wherein the movable connecting belt is arranged between the two smooth wave surfaces and is in sliding connection with the smooth wave surfaces;
and the accommodating placing groove is formed in the clamping block, and the width of the accommodating placing groove is larger than the diameter of the buffering elastic rope.
Compared with the prior art, the invention has the beneficial effects that:
when testing the PCB board, at first, start synchronous push-pull subassembly, can drive the side clamping subassembly through pulling clamp assembly and remove to the center of PCB board test bench respectively in direction notch I and direction notch II, wherein, side clamping subassembly comprises four parts, be located four edges of PCB board test bench respectively, can carry out centre gripping work to four edges of PCB board that need detect, under synchronous push-pull subassembly's drive effect, side clamping subassembly's four parts can remove to the center of PCB board test bench, distance between the four parts is adjusted, thereby can be convenient for place the PCB board, do not make excessive in here, when the platform space size that side clamping subassembly constitutes slightly is greater than the PCB board size, can place the PCB board that needs to detect on side clamping subassembly, then, under synchronous push-pull subassembly's continuous drive, side clamping subassembly can carry out centre gripping work to the four edges of PCB board, and the clamping force size is approximately equal, when the length and the width of the PCB board that needs to detect change, synchronous push-pull subassembly can provide suitable and approximately simple to guarantee that the operation is enough to guarantee that the PCB board is convenient for the PCB board is stable in the stability, thereby the PCB board is convenient for the stability measurement, the PCB board is guaranteed to be accurate in the stability, the PCB is stable in the measurement.
Drawings
Fig. 1 is a schematic perspective view of a PCB testing jig according to an embodiment of the present invention.
Fig. 2 is a schematic perspective view of a PCB board inspection station according to an embodiment of the present invention.
Fig. 3 is a schematic perspective view of a control box according to an embodiment of the present invention.
Fig. 4 is a schematic perspective view of a fixing base according to an embodiment of the present invention.
Fig. 5 is a schematic perspective view of a support plate according to an embodiment of the invention.
Fig. 6 is a schematic perspective view of a rotating linkage plate according to an embodiment of the present invention.
Fig. 7 is a schematic perspective view of a driving wheel according to an embodiment of the present invention.
Fig. 8 is a schematic top view of a clamping control box according to an embodiment of the present invention.
Fig. 9 is a schematic perspective view of a clamping block according to an embodiment of the present invention.
In the figure: the device comprises a 1-PCB board detection table, a 2-control box, a 3-fixed base, a 4-display panel, a 5-guiding notch I, a 6-T type translation placing plate I, a 7-T type translation placing plate II, an 8-guiding notch II, a 9-clamping baffle, a 10-clamping groove, a 11-placing detector, a 12-access door, a 13-bumper strip, a 14-vent, a 15-supporting plate, a 16-telescopic cylinder, a 17-guiding sliding rail, a 18-sliding supporting plate I, a 19-clamping control platform, a 20-connecting rod I, a 21-rotating linkage plate, a 22-supporting shaft, a 23-connecting rod II, a 24-transmission rotating wheel, a 25-pressure detector, a 26-braking piece, a 27-sliding supporting plate II, a 28-rotating shaft, a 29-moving connecting belt, a 30-buffering elastic rope, a 31-clamping control box, a 32-telescopic driving piece, a 33-clamping block, a 34-smooth wave surface and a 35-accommodating placing groove.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Specific implementations of the invention are described in detail below in connection with specific embodiments.
Referring to fig. 1-9, the embodiment of the invention provides a PCB board testing jig, which includes a PCB board detecting table 1, wherein a control box 2 is fixedly installed on the PCB board detecting table 1, and further includes:
the first guide notch 5 and the second guide notch 8 are respectively arranged on the PCB board detection table 1 and are communicated with the control box 2, and the first guide notch 5 and the second guide notch 8 are vertically arranged;
a support plate 15, wherein the support plate 15 is fixedly installed in the control box 2;
the clamping control mechanism is respectively connected with the PCB board detection table 1 and the supporting plate 15, and is also respectively connected with the first guide notch 5 and the second guide notch 8;
the clamping control mechanism comprises a side clamping assembly, a pulling clamping assembly and a synchronous push-pull assembly;
the side clamping assembly is in sliding connection with the PCB board detection table 1 and is respectively connected with the first guide notch 5 and the second guide notch 8, the synchronous push-pull assembly is respectively connected with the PCB board detection table 1 and the supporting plate 15, and the pulling clamping assembly is respectively connected with the PCB board detection table 1 and the synchronous push-pull assembly and is connected with the side clamping assembly.
When testing the PCB board, at first, start synchronous push-and-pull subassembly, can drive the lateral part clamping assembly through pulling clamp assembly and remove to the center of PCB board detection platform 1 in direction notch one 5 and direction notch two 8 respectively, wherein, lateral part clamping assembly comprises four parts, be located four edges of PCB board detection platform 1 respectively, can carry out centre gripping work to four edges of the PCB board that needs to detect, under synchronous push-and-pull assembly's drive effect, lateral part clamping assembly's four parts can remove to the center of PCB board detection platform 1, with adjust the distance between the four parts, thereby can be convenient for place the PCB board, do not make too much in this, when the platform space size that lateral part clamping assembly constitutes is slightly greater than the PCB board, can place the PCB board that needs to detect on lateral part clamping assembly, then, the lateral part clamping assembly can carry out centre gripping work to the four sides of PCB board under synchronous push-and-pull assembly's continuous drive, and the clamping force size is approximately equal, when the length and the width of the PCB board that need to detect change, synchronous push-and-pull assembly can provide the suitable and provide and just enough stability of PCB board under the effect that provides the PCB board that the measurement is convenient for the stability is guaranteed to measure the PCB board, thereby the stability is good, the PCB board is convenient to be provided.
In one embodiment of the present invention, referring to fig. 1 to 9, further comprising: the placement detector 11 is fixedly arranged in the middle of the PCB board detection table 1;
the display panel 4 is fixedly connected with the control box 2, and the display panel 4 is also electrically connected with the clamping control mechanism.
Further comprises: the fixed base 3 is fixedly arranged on the control box 2, and a ventilation opening 14 is further formed in the side wall of the control box 2;
an access door 12, the access door 12 being detachably connected to the control box 2;
and a plurality of anti-collision strips 13, wherein the number of the anti-collision strips 13 is plural, and the plurality of anti-collision strips 13 are all installed on the control box 2.
In the process of testing the PCB, the whole equipment can be connected with other components through the fixing base 3 in a bolt way, when the size of a platform space formed by the side clamping assemblies is slightly larger than that of the PCB, the equipment is enabled to stop working, the PCB to be tested is placed on the placement detector 11, the height of the placement detector 11 is flush with the placement position of the side clamping assemblies, at the moment, the placement detector 11 is pressed to start working, the synchronous push-pull assemblies can be controlled to start again, so that the PCB is clamped, clamping failure caused by misoperation when the PCB is not placed or is placed incorrectly is avoided, and smooth clamping of the PCB can be ensured.
In one embodiment of the present invention, referring to fig. 1-9, the side clamping assembly comprises:
the first T-shaped translation placing plates 6 are symmetrically distributed on the PCB board detection table 1 and are in sliding connection with the PCB board detection table 1, and the first T-shaped translation placing plates 6 are respectively inserted into the first two guide notches 5 and are in sliding connection with the first guide notches 5;
the two T-shaped translation placing plates 7 are symmetrically distributed on the PCB board detection table 1 and are in sliding connection with the PCB board detection table 1, and the two T-shaped translation placing plates 7 are respectively inserted into the two guide notch II 8 and are in sliding connection with the guide notch II 8;
and the number of the clamping baffles 9 is four, the four clamping baffles 9 are respectively and fixedly installed on the first T-shaped translation placing plate 6 and the second T-shaped translation placing plate 7, and each clamping baffle 9 is provided with a clamping groove 10.
Referring to fig. 1-9, the synchronous push-pull assembly includes:
the number of the telescopic cylinders 16 is two, and the two telescopic cylinders 16 are symmetrically arranged on the supporting plate 15;
the first sliding support plate 18, two ends of the first sliding support plate 18 are fixedly connected with the output ends of the two telescopic cylinders 16 respectively, and the first sliding support plate 18 is also in sliding connection with the support plate 15 through a guide sliding rail 17;
and the linkage unit is respectively connected with the supporting plate 15, the guide sliding rail 17 and the first sliding support plate 18, and is also connected with the pulling clamping assembly.
The linkage unit includes:
a rotary linkage plate 21, wherein the rotary linkage plate 21 is rotatably connected with the middle part of the support plate 15 through a support shaft 22, and one end of the rotary linkage plate 21 is rotatably connected with the first sliding support plate 18 through a first connecting rod 20;
the second sliding support plate 27 is slidably arranged on the guide slide rail 17;
and a second connecting rod 23, wherein two ends of the second connecting rod 23 are respectively and rotatably connected with the rotary linkage plate 21 and the second sliding support plate 27.
When the PCB is tested, the telescopic cylinder 16 is started, the first sliding support plate 18 can be pulled to move towards the direction of the supporting plate 15, in the moving process of the first sliding support plate 18, the first connecting rod 20 can be used for pushing the rotary linkage plate 21 to rotate anticlockwise on the supporting plate 15 through the supporting shaft 22 (as shown in figure 5), in the rotating process of the rotary linkage plate 21, the second connecting rod 23 can be used for pulling the second sliding support plate 27 to synchronously move towards the supporting plate 15, wherein the moving distance and the moving speed of the first sliding support plate 18 and the second sliding support plate 27 are the same, in the moving process of the first sliding support plate 18 and the second sliding support plate 27, the pulling clamping assembly can be driven to move, so that the two oppositely arranged T-shaped translation placing plates 6 can be respectively driven to slide towards the center of the PCB detection table 1 in the guide notch 5, and drive two T type translation that set up simultaneously and place board two 7 and remove to the center of PCB board detection platform 1 in direction notch two 8, wherein, after the test is accomplished, board two 7 can be placed to T type translation and place board one 6 and T type translation and adopt the form that manual reset, in addition, board one 6 and board two 7 can be placed to T type translation and board 1 sliding connection can be adopted to the form of guide rail and PCB board detection platform, in order to guarantee that board one 6 and board two 7 are placed to T type translation and stability in the removal in-process is placed to T type translation, do not do too much in this, when board two 7 are placed in T type translation, can make four lateral parts of PCB board insert respectively in the draw-in groove 10 on four centre gripping baffles 9 gradually, in order to guarantee the steadiness of follow-up centre gripping to the PCB board.
In one embodiment of the present invention, referring to fig. 1-9, the pull clamping assembly includes:
the number of the contraction guide units is two, and the two contraction guide units have the same structure and are respectively connected with the first sliding support plate 18 and the second sliding support plate 27;
the number of the movable connecting belts 29 is two, and the two movable connecting belts 29 are respectively connected with the two contraction guiding units in a sliding way;
the number of the buffer elastic ropes 30 is four, wherein one end of each buffer elastic rope 30 is respectively connected with the first T-shaped translation placing plate 6 and the second T-shaped translation placing plate 7, the other end of each buffer elastic rope 30 is fixedly connected with two ends of one movable connecting belt 29, one end of each buffer elastic rope 30 is connected with the first T-shaped translation placing plate 6 and the second T-shaped translation placing plate 7, and the other end of each buffer elastic rope 30 is fixedly connected with two ends of the other movable connecting belt 29;
and a positioning tightening unit fixedly connected with the inner wall of the control box 2, and further slidably connected with the movable connecting belt 29.
The retraction guide unit includes:
the clamping control platform 19 is fixedly arranged on the first sliding support plate 18;
the rotating shaft 28 is rotatably mounted on the clamping control platform 19, one end of the rotating shaft 28 is fixedly provided with a transmission rotating wheel 24, the transmission rotating wheel 24 is connected with the movable connecting belt 29, the other end of the rotating shaft 28 is provided with a braking piece 26, and the braking piece 26 is fixedly connected with the clamping control platform 19;
and a pressure detector 25, wherein the pressure detector 25 is fixedly connected with the transmission rotating wheel 24 and detachably connected with the movable connecting belt 29.
The positioning tightening unit includes:
the clamping control box 31 is fixedly connected with the inner wall of the control box 2, and a telescopic driving piece 32 is fixedly arranged on the clamping control box 31;
the number of the clamping blocks 33 is two, the two clamping blocks 33 are symmetrically arranged in the clamping control box 31 respectively, and are both in sliding connection with the clamping control box 31, and the two clamping blocks 33 are also fixedly connected with the output end of the telescopic driving piece 32;
the smooth wave surfaces 34 are positioned on the end parts of the clamping blocks 33, and the two smooth wave surfaces 34 are arranged in a staggered manner, wherein the movable connecting belt 29 is arranged between the two smooth wave surfaces 34 and is in sliding connection with the smooth wave surfaces 34;
and a receiving groove 35, wherein the receiving groove 35 is formed on the clamping block 33, and the width of the receiving groove 35 is larger than the diameter of the buffering elastic rope 30.
In the process of moving the first sliding support plate 18 and the second sliding support plate 27, the clamping control platforms 19 on the first sliding support plate 18 and the second sliding support plate 27 can be driven to move towards the direction of the support plate 15, in the process of moving the two clamping control platforms 19 towards each other, the two transmission rotating wheels 24 can be driven to synchronously move, wherein the movable connecting belt 29 is always clamped in the transmission rotating wheels 24, in the process of moving the transmission rotating wheels 24, the movable connecting belt 29 is pulled to move, so that the first T-shaped translational placing plate 6 and the second T-shaped translational placing plate 7 are pulled to synchronously move through the buffer elastic ropes 30 (as shown in figures 1 and 8), in the process of clamping the PCB, the buffer effect can be achieved through the buffer elastic ropes 30, damage to the PCB due to rigid clamping is avoided, in addition, because the length of the PCB is larger than the width, in the process that the transmission rotating wheel 24 pulls the movable connecting belt 29 to move towards the direction of the supporting plate 15, the buffer elastic ropes 30 in the horizontal direction are gradually stretched (as shown in fig. 8), then the buffer elastic ropes 30 in the horizontal direction pull the movable connecting belt 29 to move towards two sides, so as to drive the transmission rotating wheel 24 to rotate clockwise on the first sliding supporting plate 18 and the second sliding supporting plate 27 through the rotating shaft 28, and stretch the buffer elastic ropes 30 in the vertical direction, so as to drive the first T-shaped translation placing plate 6 to quickly move towards the center of the PCB detecting table 1, and as the first sliding supporting plate 18 and the second sliding supporting plate 27 continuously move, under the continuous circulation of the actions, the final movable connecting belt 29 drives the transmission rotating wheel 24 to rotate for a plurality of circles and then be in a balanced state, at the moment, the tensile force of the two buffer elastic ropes 30 positioned on two ends of the same movable connecting belt 29 is approximately the same, therefore, the clamping forces on the sides of the PCB are approximately equal, in addition, in the process of driving the transmission rotating wheel 24 to rotate by the movable connecting belt 29, the transmission rotating wheel 24 can generate extrusion action, through the detection of the pressure detector 25, after the extrusion force reaches a certain value, the pressure detector 25 can control the telescopic cylinder 16 to stop, at the moment, the clamping force of the clamping baffle 9 on the PCB also just meets the requirement, thereby the automatic start and stop of equipment can be controlled, the manpower is saved, and the automation degree of the equipment is improved, wherein, in order to ensure the transmission efficiency between the movable connecting belt 29 and the transmission rotating wheel 24, the movable connecting belt 29 and the transmission rotating wheel 24 can also adopt the structure of matching an internal tooth belt and a gear, and redundant description is not made here;
in addition, when the transmission rotating wheel 24 stops rotating, the pressure detector 25 also controls the braking part 26 to start working, wherein the braking part 26 can adopt a braking structure in the prior art to brake the rotating shaft 28, so that the transmission rotating wheel 24 is prevented from rotating in the subsequent PCB test process, and the clamping stability is ensured, in addition, when the PCB is tested, some PCB is long, the tested parts are mostly concentrated at the two ends, and in the continuous operation process, the PCB is likely to be loosened, so that the test result is affected, therefore, after the braking part 26 positions the transmission rotating wheel 24, the telescopic driving part 32 is started, the two clamping blocks 33 can be pushed to move towards the middle part simultaneously in the clamping control box 31, one end of one clamping block 33 provided with a smooth wave surface 34 is of a U-shaped structure, so that the movable connecting belt 29 moves in the whole process, is always clamped in the U-shaped groove and is in sliding connection with one of the smooth wave surfaces 34 (the U-shaped structure mainly plays a limiting role, is not shown in the drawing in the prior art), the width of the movable connecting belt 29 is slightly smaller than the height of the transmission rotating wheel 24, the width of the accommodating placing groove 35 is larger than the diameter of the buffering elastic rope 30, the two clamping blocks 33 can produce an extrusion effect on the movable connecting belt 29 in the process of approaching each other, the movable connecting belt 29 which is in a smooth state is changed into a wavy state, so that the buffer elastic rope 30 in the horizontal direction is stretched for a certain distance again (as shown in fig. 8), the clamping force of the clamping baffle plate 9 on the T-shaped translational placing plate two 7 on the PCB is further increased, when the movable connecting belt 29 is in the wavy state, the buffer elastic rope 30 is clamped into the accommodating placing groove 35, the buffer elastic rope 30 is not extruded, therefore, the elastic deformation of the buffering elastic rope 30 is not affected, and as the length of the PCB is longer, the more the movable connecting belt 29 enters the clamping control box 31, when the clamping blocks 33 are close to each other, the more the movable connecting belt 29 is in a wavy state, the longer the buffering elastic rope 30 in the horizontal direction is stretched, and the greater the clamping force of the clamping baffle 9 on the T-shaped translation placing plate II 7 on the length direction of the PCB is, so that the stability of the PCB in the testing process can be further ensured.
It should be noted that, in the present invention, unless explicitly specified and defined otherwise, terms such as "sliding", "rotating", "fixing", "provided" and the like should be interpreted broadly, and may be, for example, welded, bolted, or integrated; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (3)
1. The utility model provides a PCB board test fixture, includes the PCB board test bench, fixed mounting has the control box on the PCB board test bench, its characterized in that still includes:
the first guide notch and the second guide notch are both arranged on the PCB detection table and are both communicated with the control box, and the first guide notch and the second guide notch are vertically arranged;
the supporting plate is fixedly arranged in the control box;
the clamping control mechanism is respectively connected with the PCB board detection table and the supporting plate, and is also respectively connected with the first guide notch and the second guide notch;
the clamping control mechanism comprises a side clamping assembly, a pulling clamping assembly and a synchronous push-pull assembly;
the side clamping assembly is in sliding connection with the PCB detection table and is respectively connected with the first guide notch and the second guide notch, the synchronous push-pull assembly is respectively connected with the PCB detection table and the supporting plate, and the pulling clamping assembly is respectively connected with the PCB detection table and the synchronous push-pull assembly and is connected with the side clamping assembly;
the side clamp assembly includes: the first T-shaped translation placing plates are symmetrically distributed on the PCB detection table and are in sliding connection with the PCB detection table, and the first T-shaped translation placing plates are also respectively inserted into the first guide notch and are in sliding connection with the first guide notch;
the second T-shaped translation placing plates are symmetrically distributed on the PCB detection table and are in sliding connection with the PCB detection table, and the second T-shaped translation placing plates are respectively inserted into the second guide notch and are in sliding connection with the second guide notch;
the clamping baffles are respectively and fixedly arranged on the first T-shaped translation placing plate and the second T-shaped translation placing plate, and each clamping baffle is provided with a clamping groove;
the synchronous push-pull assembly includes: the number of the telescopic cylinders is two, and the two telescopic cylinders are symmetrically arranged on the supporting plate;
the first sliding support plate is fixedly connected with the output ends of the two telescopic cylinders respectively, and is also in sliding connection with the support plate through a guide sliding rail;
the linkage unit is respectively connected with the support plate, the guide sliding rail and the first sliding support plate, and is also connected with the pulling clamping assembly;
the linkage unit includes: the rotary linkage plate is rotationally connected with the middle part of the supporting plate through a supporting shaft, and one end of the rotary linkage plate is rotationally connected with the sliding support plate through a first connecting rod;
the second sliding support plate is arranged on the guide sliding rail in a sliding manner;
the two ends of the second connecting rod are respectively and rotatably connected with the rotary linkage plate and the second sliding support plate;
the pull clamping assembly includes: the number of the contraction guide units is two, and the two contraction guide units have the same structure and are respectively connected with the first sliding support plate and the second sliding support plate;
the movable connecting belts are two in number and are respectively connected with the two contraction guiding units in a sliding manner;
the buffer elastic ropes are four in number, one end of each buffer elastic rope is connected with the T-shaped translation placing plate I and the T-shaped translation placing plate II respectively, the other end of each buffer elastic rope is fixedly connected with two ends of one movable connecting belt, one end of each buffer elastic rope is connected with the T-shaped translation placing plate I and the T-shaped translation placing plate II, and the other end of each buffer elastic rope is fixedly connected with two ends of the other movable connecting belt;
the positioning tightening unit is fixedly connected with the inner wall of the control box and is also in sliding connection with the movable connecting belt;
the retraction guide unit includes: the clamping control platform is fixedly arranged on the first sliding support plate;
the rotating shaft is rotatably arranged on the clamping control platform, one end of the rotating shaft is fixedly provided with a transmission rotating wheel, the transmission rotating wheel is connected with the movable connecting belt, the other end of the rotating shaft is provided with a braking piece, and the braking piece is fixedly connected with the clamping control platform;
the pressure detector is fixedly connected with the transmission rotating wheel and is detachably connected with the movable connecting belt;
the positioning tightening unit includes: the clamping control box is fixedly connected with the inner wall of the control box, and a telescopic driving piece is fixedly arranged on the clamping control box;
the clamping blocks are symmetrically arranged in the clamping control box respectively and are both in sliding connection with the clamping control box, and the two clamping blocks are also fixedly connected with the output end of the telescopic driving piece;
the smooth wave surfaces are positioned on the end parts of the clamping blocks, and the two smooth wave surfaces are arranged in a staggered mode, wherein the movable connecting belt is arranged between the two smooth wave surfaces and is in sliding connection with the smooth wave surfaces;
and the accommodating placing groove is formed in the clamping block, and the width of the accommodating placing groove is larger than the diameter of the buffering elastic rope.
2. The PCB testing jig of claim 1, further comprising: the placement detector is fixedly arranged in the middle of the PCB board detection table;
and the display panel is fixedly connected with the control box and is also electrically connected with the clamping control mechanism.
3. The PCB testing jig of claim 2, further comprising: the fixed base is fixedly arranged on the control box, and a ventilation opening is further formed in the side wall of the control box;
the access door is detachably connected with the control box;
and the number of the anti-collision strips is multiple, and the anti-collision strips are all installed on the control box.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410038931.4A CN117554789B (en) | 2024-01-11 | 2024-01-11 | PCB board test fixture |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410038931.4A CN117554789B (en) | 2024-01-11 | 2024-01-11 | PCB board test fixture |
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| CN117554789A CN117554789A (en) | 2024-02-13 |
| CN117554789B true CN117554789B (en) | 2024-03-19 |
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| CN202410038931.4A Active CN117554789B (en) | 2024-01-11 | 2024-01-11 | PCB board test fixture |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN117554789A (en) | 2024-02-13 |
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