CN116660589B - Test fixture and test structure of automobile-used well accuse circuit board - Google Patents
Test fixture and test structure of automobile-used well accuse circuit board Download PDFInfo
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- CN116660589B CN116660589B CN202310595913.1A CN202310595913A CN116660589B CN 116660589 B CN116660589 B CN 116660589B CN 202310595913 A CN202310595913 A CN 202310595913A CN 116660589 B CN116660589 B CN 116660589B
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- 238000012360 testing method Methods 0.000 title claims abstract description 64
- 239000000523 sample Substances 0.000 claims abstract description 17
- 238000000926 separation method Methods 0.000 claims description 6
- 230000000630 rising effect Effects 0.000 claims description 5
- 230000001360 synchronised effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000007665 sagging Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
Classifications
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- 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
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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
- G01R31/2851—Testing of integrated circuits [IC]
- G01R31/2855—Environmental, reliability or burn-in testing
- G01R31/286—External aspects, e.g. related to chambers, contacting devices or handlers
- G01R31/2865—Holding devices, e.g. chucks; Handlers or transport devices
- G01R31/2867—Handlers or transport devices, e.g. loaders, carriers, trays
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- General Engineering & Computer Science (AREA)
- Tests Of Electronic Circuits (AREA)
Abstract
The invention relates to the field of circuit board testing, and discloses a testing jig and a testing structure of a central control circuit board for a vehicle, wherein the testing jig comprises a rack and a probe testing module arranged on the rack, a conveying assembly for conveying the circuit board is arranged in the rack, the conveying assembly comprises two conveying belts which are arranged in parallel front and back, an adjusting assembly which is movably clamped with the two conveying belts respectively is arranged in the rack, and a control assembly corresponding to the positions of the adjusting assembly, the probe testing module and the conveying belts is arranged in the rack. According to the invention, through the cooperation among the conveying assembly, the adjusting assembly, the control assembly and the like, the two conveyor belts can convey the circuit board at a reduced distance, the two conveyor belts can be relatively far away, and further the control assembly with larger front and rear dimensions can be arranged to support the circuit board, so that the overlapping area of the circuit board and the conveyor belts can be effectively supported and the test can be completed.
Description
Technical Field
The invention relates to the technical field of circuit board testing, in particular to a testing jig and a testing structure of a vehicle central control circuit board.
Background
The circuit board enables the circuit to be miniaturized and visualized, and plays an important role in mass production of fixed circuits and optimization of the layout of electrical appliances. After the production of the circuit board is completed, whether the circuit board to be tested accords with various performance characteristics or not needs to be tested by using a tester, and the circuit board is conducted mainly through inserting a test probe into a corresponding hole site of the circuit board.
For example, chinese patent publication No. CN210816323U discloses an automatic circuit board testing device, which cooperates with a testing jig and comprises a base, a plug-in assembly line, a pressure-bearing mechanism, a pressing mechanism, a stamping mechanism and a blocking mechanism; the plug-in assembly line is arranged on the base, the pressure-bearing mechanism is arranged between two rails of the plug-in assembly line, and the pressing mechanism is arranged above the pressure-bearing mechanism. Through above-mentioned setting, the circuit board is to pressure-bearing mechanism automatic feeding unloading on plug-in components assembly line, need not the tester and places and take off the circuit board to the repetitive mechanical work of circuit board automatic testing arrangement, realizes the line production through the plug-in components assembly line, greatly reduced tester's working strength, improves the production efficiency of enterprise.
The application is located the plug-in assembly line of front and back both sides and drives the circuit board to remove, and pressure-bearing mechanism rises from the centre of plug-in assembly line, and consequently the length dimension of pressure-bearing mechanism in the fore-and-aft direction must be less than the intermediate dimension of plug-in assembly line, otherwise can't rise the circuit board from the centre, and this just causes the circuit board to accomplish by pressure-bearing mechanism with the partial region that the plug-in assembly line overlaps to support, and then has influenced to inserting quality and test effect, has certain use limitation.
Therefore, it is necessary to provide a testing fixture and a testing structure for a central control circuit board for a vehicle to solve the above technical problems.
Disclosure of Invention
The invention aims to provide a testing jig and a testing structure of a vehicle central control circuit board, which are used for solving the problems in the background technology.
In order to achieve the above purpose, a test fixture and a test structure are designed, wherein the conveying effect of the conveying belt to the circuit board is guaranteed by approaching the conveying belt at the beginning, and the circuit board can be completely tested by separating the conveying belt from the conveying belt to the two sides.
Based on the thought, the invention provides the following technical scheme: the utility model provides a test fixture and test structure of automobile-used well accuse circuit board, includes the frame and sets up the probe test module in the frame, the inside of frame is provided with the transportation subassembly that is used for carrying the circuit board, and transportation subassembly includes two conveyer belts that are parallel around, and the inside of frame is provided with the adjusting part with two conveyer belts respectively movable block, and the inside of frame is provided with the control assembly that corresponds with adjusting part, probe test module and conveyer belt all position; when the control assembly is started, the two conveyor belts can be driven to separate from each other through the adjusting assembly, so that the circuit board is separated from the conveyor belts and falls onto the control assembly.
As a further aspect of the invention: the conveying assembly further comprises two rollers which are rotationally connected with the frame, the conveyor belt is sleeved on the two rollers to form movement, and the end part of one roller is fixedly provided with a motor which is fixedly connected with the frame.
As a further aspect of the invention: the adjusting component comprises four ferrules movably sleeved outside the roller wheels, the four ferrules are correspondingly arranged on the front side and the rear side of the conveyor belt in pairs, a transverse plate is fixedly arranged between the two ferrules on the front side and the rear side of the conveyor belt, a first spring is jointly and fixedly arranged between the two ferrules on the inner side, and long plates corresponding to the positions of the control component are fixedly arranged on the surfaces of the two ferrules on the inner side.
As a further aspect of the invention: the control assembly comprises an air cylinder fixedly connected with the frame, a carrier plate for supporting the circuit board is fixedly arranged on an output shaft of the air cylinder, side plates are fixedly arranged on two sides of the carrier plate, and wedge-shaped blocks corresponding to the positions of the long plates are fixedly arranged at the bottoms of the side plates.
As a further aspect of the invention: the top surface of wedge is provided with arc portion, can drive two long boards and separate forward and backward both sides when arc portion and long board contact, and long board can keep the front and back separation state motionless when arc portion and long board separation and wedge continue to rise.
As a further aspect of the invention: the surface of the carrier plate penetrates through the carrier plate and is slidably provided with a push rod protruding relative to the top of the carrier plate, and a moving assembly for supporting the push rod is arranged between the side plate and the frame; when the long plate is contacted with the arc-shaped part, the ejector rod is synchronously contacted with the circuit board by the moving assembly or the circuit board is jacked up.
As a further aspect of the invention: the distance between the ejector rod and the top of the carrier plate is larger than the thickness of the conveyor belts, and the ejector rod is positioned in the middle of the two conveyor belts.
As a further aspect of the invention: the movable assembly comprises a supporting plate which is in sliding fit with the side plate and is used for supporting the ejector rod, a placement hole for placing the supporting plate is formed in the surface of the side plate, a first pull rope fixedly connected with the rack is fixedly arranged on the surface of the supporting plate, a second spring is fixedly arranged between the bottom surface of the supporting plate and the placement hole, and the supporting plate has a tendency of vertically rising along the placement hole under the action of the second spring.
As a further aspect of the invention: the first stay cord is provided with the surplus, and when ejector pin and circuit board synchronous contact or have jacked the circuit board, the surplus of first stay cord is straightened completely.
The invention also provides the following technical scheme: a test structure of a vehicular central control circuit board comprises the test fixture in any one of the technical schemes.
Compared with the prior art, the invention has the beneficial effects that: through the cooperation between transportation subassembly, adjusting part and the control assembly etc. can make two conveyer belts carry the circuit board with the interval that reduces, and then can realize the good support to the circuit board, avoid the intermediate space great and the circuit board because of the gravity sagging skew, it is better to work a job in being suitable for partial flexible circuit board. The two conveyor belts can be relatively far away, and further, the control assembly with larger front and rear sizes can be arranged to support the circuit board, so that the area where the circuit board and the conveyor belts are overlapped can be effectively supported and tested, the overall test effect of the circuit board can be guaranteed, and the whole surface of the circuit board can be supported by the control assembly, so that the whole surface of the circuit board can be completely tested once, and the test efficiency of the circuit board is improved.
Drawings
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
FIG. 1 is a perspective view of the overall structure of the present invention;
FIG. 2 is a schematic view of the internal structure of the frame of the present invention;
FIG. 3 is an enlarged view of the structure of FIG. 2 at A;
FIG. 4 is an enlarged view of the structure at B in FIG. 2;
FIG. 5 is a schematic view of a carrier bar and carrier plate according to the present invention;
FIG. 6 is a schematic diagram of a moving assembly according to the present invention;
FIG. 7 is an enlarged view of the structure at C in FIG. 6;
FIG. 8 is a schematic view of the structure of the carrier plate and the avoidance holes of the present invention;
FIG. 9 is a schematic view showing the internal structure of the inner panel of the present invention;
fig. 10 is an enlarged view of the structure at D in fig. 9.
In the figure: 1. a frame; 2. a transport assembly; 3. an adjustment assembly; 4. a control assembly; 5. a probe test module; 6. a circuit board; 7. a moving assembly; 8. a push rod; 9. a connection assembly; 10. a boss; 201. a roller; 202. a conveyor belt; 301. a ferrule; 302. a cross plate; 303. a first spring; 304. a long plate; 401. a cylinder; 402. a carrier plate; 403. a side plate; 404. wedge blocks; 405. a mounting hole; 4021. an inner plate; 4022. an outer plate; 4023. avoidance holes; 701. a supporting plate; 702. a first pull rope; 703. a vertical groove; 704. a second spring; 901. a pushing block; 902. a second pull rope; 903. and a third spring.
Detailed Description
Embodiment one:
referring to fig. 1 to 2, an embodiment of the invention provides a testing fixture for a central control circuit board for a vehicle, which is mainly used for improving the transportation and bearing effects of the circuit board 6 and ensuring the comprehensive testing of the circuit board 6, the testing fixture comprises a frame 1, a transportation assembly 2 for conveying the circuit board 6 is arranged in the frame 1, the transportation assembly 2 comprises two front and back parallel conveyor belts 202, an adjusting assembly 3 movably clamped with the two conveyor belts 202 is arranged in the frame 1, and a control assembly 4 corresponding to the positions of the adjusting assembly 3 and the conveyor belts 202 is also arranged in a closed inner area of the conveyor belts 202 in the frame 1.
The distance between the front and back directions of the two conveyor belts 202 is smaller, and the stable conveying of the circuit board 6 can be realized by matching the front and back bandwidths of the conveyor belts 202. When the transportation assembly 2 is started, the circuit board 6 can be conveyed through the two conveying belts 202, and when the control assembly 4 is started and is in contact with the adjusting assembly 3, the adjusting assembly 3 can drive the two conveying belts 202 to separate to two sides in the front-back direction, and then the two conveying belts are separated from the circuit board 6, so that the circuit board 6 falls onto the control assembly 4, and the control assembly 4 drives the circuit board 6 to move.
Further, a probe testing module 5 is further disposed right above the frame 1 corresponding to the control component 4, when the control component 4 drives the circuit board 6 to continue moving, that is, drives the circuit board 6 to continue rising so that the circuit board 6 and the probe testing module 5 correspondingly contact, and finally the probe testing module 5 and the circuit board 6 form conduction to complete testing. The probe test module 5 is a well-known technology, and will not be described in detail here.
Referring to fig. 1 to 5, in the present embodiment, it is preferable that: the transporting assembly 2 further comprises two rollers 201 rotatably connected with the frame 1, the conveyor belt 202 is sleeved on the two rollers 201 to form movement, a motor (not shown in the figure) fixedly connected with the frame 1 is fixedly installed at the end part of one roller 201, and the conveyor belt 202 drives the circuit board 6 to move through the motor and the rollers 201.
Further, the adjusting assembly 3 includes four ferrules 301 movably sleeved outside the roller 201, the four ferrules 301 are correspondingly located on the front and rear sides of the two conveyor belts 202, and a transverse plate 302 is fixedly installed between the two ferrules 301 corresponding to the front and rear sides of the conveyor belts 202, so that the two ferrules 301 cover the corresponding conveyor belts 202 therein, and when the ferrules 301 move in the front and rear directions, the corresponding conveyor belts 202 can be driven to synchronously move on the roller 201.
In order to realize that the conveyor belt 202 forms a smaller distance in the initial state, a first spring 303 is fixedly arranged between the two inner ferrules 301, the two inner ferrules 301 have a trend of approaching each other under the action of the first spring 303, and the inner ferrules 301 drive the outer ferrules 301 to synchronously move through the transverse plate 302, so that the conveyor belt 202 maintains a smaller distance in the initial state. Meanwhile, the outer surfaces of the two ferrules 301 positioned at the inner side are fixedly provided with long plates 304 corresponding to the positions of the control assembly 4, and when the control assembly 4 is started and contacts with the two long plates 304, the two long plates 304 can be driven to separate from the front side and the rear side, so that the two ferrules 301 positioned at the inner side are driven to separate from the front side and the rear side.
In order to support the collar 301 and the long plate 304 against the roller 201, a telescopic rod (not shown) fixedly connected with the long plate 304/collar 301 may also be fixedly mounted on the frame.
Further, the control assembly 4 includes a cylinder 401 fixedly connected with the frame 1, a carrier plate 402 for supporting the circuit board 6 is fixedly mounted on an output shaft of the cylinder 401, and a plurality of through holes corresponding to the probe testing module 5 are formed in the surface of the carrier plate 402 in a penetrating manner, so that probes can be inserted into the through holes through the circuit board 6. The carrier plate 402 is located under the two conveyor belts 202, the left side and the right side of the carrier plate are fixedly provided with side plates 403, the bottom of each side plate 403 is fixedly provided with a wedge block 404 corresponding to the position of the long plate 304, when the wedge blocks 404 are in contact with the long plate 304, the two long plates 304 can be driven to separate from each other at the front side and the rear side, and when the wedge blocks 404 continue to rise, the long plates 304 can keep in a front-rear separation state. Of course, the cylinder 401 may be replaced by an existing electric push rod, or a screw mechanism capable of up-and-down reciprocation.
In the above structure, the wedge block 404 is located directly below the long plate 304, and the top of the wedge block is in an arc design, the arc of the wedge block 404 is firstly contacted with the long plate 304 to separate the two long plates 304, and then along with the continued movement of the wedge block 404, the front side and the rear side of the wedge block 404 are contacted with the long plate 304, so that the long plate 304 is kept in a separated state.
Meanwhile, the length dimension of the carrier plate 402 in the front-rear direction is smaller than or equal to the distance between the front side of the front conveyor belt 202 and the rear side of the rear conveyor belt 202, so that the carrier plate 402 does not contact and interfere with the two separated conveyor belts 202 when the lifting circuit board 6 continues to rise.
When the device is used, the motor is started to drive the circuit board 6 to move from left to right (or from right to left) through the roller 201 and the conveying belt 202, when the circuit board 6 moves to the position right above the carrier plate 402, the motor is stopped, the air cylinder 401 is started, the air cylinder 401 drives the carrier plate 402, the side plates 403 and the wedge blocks 404 to synchronously lift, when the wedge blocks 404 are contacted with the long plates 304, the two inner side ferrules 301 can be driven to separate from the front side and the rear side through the long plates 304, and when the inner side ferrules 301 drive the conveying belt 202 to synchronously move through the transverse plates 302 and the outer side ferrules 301, the two conveying belts 202 are separated from the front side and the rear side.
When the carrier plate 402 moves to the bottom surface of the part above the conveyor belts 202, the two conveyor belts 202 are just separated from the circuit board 6, and the circuit board 6 falls on the carrier plate 402 and is driven by the carrier plate 402 to continue to move, and the staggering of the conveyor belts 202 and the carrier plate 402 is not affected; finally, the carrier 402 drives the circuit board 6 to rise to contact with the probe test module 5, thereby conducting and completing the test. After the test is finished, the circuit board 6 drives the carrier board 402 to descend, when the long board 304 is separated from two sides of the wedge block 404 and is in contact with the arc-shaped top, the conveyor belt 202 can fold towards the middle to re-support the circuit board 6 on the carrier board 402, and then the carrier board 402 continues to descend and separate from the circuit board 6 for resetting.
In summary, through the cooperation of the structures such as the ferrule 301, the long plate 304, the wedge block 404, and the carrier plate 402, the two conveyor belts 202 can convey the circuit board 6 at a reduced distance, so that the circuit board 6 can be well supported, and the circuit board 6 is prevented from sagging and shifting due to gravity due to a larger middle space, so that the effect is better when the flexible circuit board 6 is applied to a part of the flexible circuit board 6. The two conveyor belts 202 can be relatively far away, and then the carrier plate 402 with larger front and rear sizes can be arranged to support the circuit board 6, so that the area where the circuit board 6 and the conveyor belts 202 are overlapped can be effectively supported and tested, the whole test effect of the circuit board 6 can be guaranteed, and the whole surface of the circuit board 6 can be supported by the carrier plate 402, so that the whole test of the whole surface of the circuit board 6 can be completed once, the test efficiency of the circuit board 6 is improved, and the practicability is higher.
Embodiment two:
referring to fig. 1 to 5, in order to further ensure the testing effect of the circuit board 6, in the first embodiment, the carrier plate 402 has an L-shaped carrier rod 8 penetrating through and slidably mounted on its surface, the top of the carrier rod 8 protrudes from the top of the carrier plate 402, the distance between the two carrier belts 202 is greater than the thickness of the carrier belt 202, and the carrier rod 8 is located in the middle region of the two carrier belts 202. Meanwhile, a moving assembly 7 is commonly provided between the side plate 403 and the frame 1 for supporting the ejector pin 8 so that the ejector pin 8 may be in contact with the bottom surface of the circuit board 6 or have lifted the circuit board 6 a distance when the long plate 304 is in arc-shaped contact with the wedge block 404.
When the carrier plate 402 drives the moving assembly 7 to move through the side plate 403, the initial moving assembly 7 can synchronously move to lift the ejector rod 8, and when the long rod contacts the wedge block 404 (i.e. the conveyor belts 202 are separated from the front side and the rear side), the moving assembly 7 passes through the middle of the two conveyor belts 202 and abuts against the bottom surface of the circuit board 6 to form a support. At this time, the carrier plate 402 continues to rise so that the conveyor belt 202 continues to separate to two sides, and the moving assembly 7 makes the position of the ejector rod 8 not move any more, i.e. the ejector rod 8 can only rise to a state of being in contact with the bottom surface of the circuit board 6 through the conveyor belt 202 to form a support.
Referring to fig. 1 to 7, in the present embodiment, it is preferable that: the moving assembly 7 comprises a supporting plate 701 which is matched with the side plate 403 in a vertical sliding way and is used for supporting the ejector rod 8, a placement hole 405 is formed in the surface, close to the carrier plate 402, of the side plate 403 and is used for placing the supporting plate 701, a first pull rope 702 which penetrates through the side plate 403 and is fixedly connected with the frame 1 is fixedly arranged on the surface of the supporting plate 701, a second spring 704 is fixedly arranged between the bottom surface of the supporting plate 701 and the placement hole 405, and the supporting plate 701 has a vertical rising trend along the placement hole 405 under the action of the second spring 704.
In the above structure, the vertical groove 703 communicated with the mounting hole 405 is formed in the side plate 403, the supporting plate 701 is slidably mounted in the vertical groove 703, and a certain margin is provided on the lower side of the first pull rope 702 away from the supporting plate 701, when the side plate 403 drives the supporting plate 701 to rise through the second spring 704, the margin of the first pull rope 702 is gradually straightened, when the side plate 403 drives the ejector rod 8 to contact with the bottom surface of the circuit board 6 through the supporting plate 701, the margin of the first pull rope 702 is completely straightened (or remains a bit, when the remains a bit, the ejector rod 8 can also drive the circuit board 6 to rise a small distance, so that the conveyor belt 202 can be separated from the circuit board 6 better). After the first pull cord 702 is completely straightened, the side plate 403 cannot drive the supporting plate 701 and the ejector rod 8 to move after the side plate 403 is further raised, and the supporting plate 701 begins to compress the second spring 704.
When in use, the rollers 201 and the conveyor belt 202 drive the circuit board 6 to move, and the two sides of the conveyor belt 202 are separated and supported by the carrier plate 402 through the structures such as the ferrule 301 and the carrier plate 402, and the working process and the effect of the part are the same as those of the first embodiment, and the description is not repeated here. The difference is that: when the cylinder 401 drives the carrier plate 402, the side plate 403 and the wedge block 404 to rise, the side plate 403 drives the ejector rod 8 to synchronously move through the supporting plate 701 and starts to pull the allowance of the first pull rope 702, when the long plate 304 is in arc contact with the wedge block 404, the top of the ejector rod 8 is already in contact with the circuit board 6 to form a support (at the moment, the allowance of the first pull rope 702 is completely straightened), then the conveyor 202 is separated towards the front side and the rear side under the action of the wedge block 404 and the ferrule 301, and the circuit board 6 is effectively supported by the ejector rod 8. As the carrier plate 402 and the side plate 403 continue to rise, the first pull rope 702 is completely straightened, so that the supporting plate 701 cannot move any more, and further, the ejector rod 8 cannot rise any more, so that the carrier plate 402 that continues to rise lifts the circuit board 6 and separates from the top of the ejector rod 8.
In the first embodiment, the front and rear sides of the conveyor belt 202 can be separated to fully support the circuit board 6 by the carrier plate 402, but because the conveyor belt 202 has a certain thickness, when the conveyor belt 202 is separated from the circuit board 6 and the circuit board 6 falls onto the carrier plate 402, the circuit board 6 may be partially offset, and in the process of separating the conveyor belt 202 from the front and rear sides, the slight offset of the circuit board 6 may be caused, so that the insertion conduction with the probe test module 5 is affected, which has a certain limitation in use.
Compared with the first embodiment, through the cooperation of the structures such as the side plate 403, the ejector rod 8, the carrier plate 402 and the first pull rope 702, the top of the ejector rod 8 can be driven to be contacted with the circuit board 6 to form a support, so that the separation of the conveyor belt 202 to two sides can not cause slight deviation of the circuit board 6, and when the conveyor belt 202 is separated from the circuit board 6, the circuit board 6 is supported by the ejector rod 8 rather than directly falling onto the carrier plate 402, and further partial deviation caused by the falling contact of the circuit board 6 with the carrier plate 402 can be avoided, the circuit board 6 can be stably supported and moved by the rising carrier plate 402, and a precise opposite insertion conduction test is formed with the probe test module 5, so that a good test effect of the circuit board 6 can be further ensured.
When the circuit board 6 is reset, the supporting plate 701 drives the ejector rod 8 to keep a state of lifting the circuit board 6, so that the ejector rod 8 can also form contact support for the circuit board 6 when the carrier plate 402 descends, further, the conveyor belt 202 can be conveniently closed and reset towards the middle, and the circuit board 6 can stably fall onto the closed conveyor belt 202 along with the descending of the ejector rod 8 driven by the supporting plate 701. The whole design is combined with the movement of the carrier plate 402 and the side plate 403, so that the opposite insertion test effect of the circuit board 6 is guaranteed, the circuit board 6 after the conveyor belt 202 is closed and reset is convenient to reset to the conveyor belt 202, and the applicability is stronger.
Embodiment III:
referring to fig. 1 to 9, in order to further facilitate the resetting of the circuit board 6 to the conveyor 202 after the testing is completed on the basis of the second embodiment, the carrier 402 is composed of an inner plate 4021 located in the middle and outer plates 4022 located at the front and rear sides, and both the outer plates 4022 are rotatably connected to the inner plate 4021; the outer plate 4022 remains parallel to the inner plate 4021 in the initial state, and the outer plate 4022 is deflectable downward relative to the inner plate 4021.
In order to realize initial parallel and deflection of the outer plate 4022, bosses 10 are fixedly arranged on the front side and the rear side of the ejector rod 8, a connecting assembly 9 which corresponds to the bosses 10 in position and is fixedly connected with the outer plate 4022 is arranged in the carrier plate 402, and the inner plate 4021 can be kept in a parallel state with the outer plate 4022 under the action of the connecting assembly 9. When the ejector rod 8 rises synchronously with the side plate 403 and the carrier plate 402, the boss 10 moves synchronously with the connecting assembly 9 without contact, and at this time, the inner plate 4021 can be kept in a parallel state with the outer plate 4022; when the carrier plate 402 continues to rise as the carrier bar 8 and boss 10 are no longer moved, the connection assembly 9 contacts the boss 10 and drives the outer plate 4022 to deflect downward relative to the inner plate 4021.
Referring to fig. 1 to 10, in the present embodiment, it is preferable that: an avoidance hole 4023 is formed at the bottom of the carrier plate 402 and at a position corresponding to the ejector rod 8, so that the boss 10 can smoothly move from the lower side of the carrier plate 402 when the carrier plate 402 is lifted
Further, the connection assembly 9 includes a push block 901 in sliding fit with the dodging hole 4023, a second pull rope 902 is fixedly connected between the surface, away from the boss 10, of the push block 901 and the outer plate 4022, a third spring 903 is fixedly installed between the surface, away from the boss 10, of the push block 901 and the dodging hole 4023, the push block 901 has a trend of moving towards the boss 10 under the action of the third spring 903, and the second pull rope 902 is pulled to enable the outer plate 4022 to be parallel to the inner plate 4021.
When the device is used, the two sides of the conveyor belt 202 are separated through the structures such as the ferrule 301 and the carrier plate 402 and supported by the carrier plate 402, and the initial support of the circuit board 6 is realized through the structures such as the ejector rod 8 and the first pull rope 702, and the working process and the effect of the device are the same as those of the second embodiment, and the repeated description is omitted. The difference is that: when the carrier plate 402, the side plate 403, the support plate 701 and the jack 8 rise synchronously, the boss 10 and the push block 901 move synchronously while the outer plate 4022 remains in a parallel state with the inner plate 4021; when the allowance of the first pull rope 702 is completely straightened so that the supporting plate 701 cannot move any more, the carrier plate 402 is driven to move continuously to move the push block 901 synchronously, and when the push block 901 passes through the boss 10 of the ejector rod 8, the push block 901 moves away from the ejector rod 8 and releases the second pull rope 902, and at this time, the outer plate 4022 can deflect downwards relative to the inner plate 4021.
In the second embodiment, the initial support of the circuit board 6 can be implemented to avoid offset dislocation of the circuit board 6, but because of a certain thickness of the conveyor belt 202, and the carrier board 402 has a larger area in the front-rear direction to completely carry the circuit board 6, the carrier board 402 may contact and interfere with the close reset of the conveyor belt 202 when descending, and there is a certain limitation in use.
Compared with the second embodiment, through the cooperation of the structures such as the boss 10, the push block 901, the inner plate 4021 and the outer plate 4022, when the carrier plate 402 ascends/resets relative to the ejector rod 8, the outer plate 4022 can be driven to deflect downwards relative to the inner plate 4021, which is beneficial to the separation of the front side and the rear side of the carrier belt 202 relative to the carrier plate 402, so that the carrier plate 402 can rapidly pass through the middle of the two carrier belts 202 to ascend, and contact interference between the carrier belt 202 and the carrier plate 402 when the carrier belt 202 approaches to the middle can be avoided, and stable conveying of the circuit board 6 is ensured. The overall design combines with the carrier plate 402 for the removal of ejector pin 8, and because planking 4022 can be for the deflection of inner panel 4021, can further liberate carrier plate 402 in the whole length dimension restriction of fore-and-aft direction, and then can further increase carrier plate 402 and circuit board 6's overall dimension for application scope is wider, has satisfied more demands in the in-service use.
Embodiment four:
referring to fig. 1 to 10, an embodiment of the present invention provides a test structure of a vehicular central control circuit board, and the embodiment adopts any one of the first to third embodiments, so as to have corresponding beneficial effects.
Claims (4)
1. The test fixture for the vehicle central control circuit board comprises a rack and a probe test module arranged on the rack, and is characterized in that a transport assembly for conveying the circuit board is arranged in the rack, the transport assembly comprises two conveying belts which are arranged in parallel front and back, an adjusting assembly which is movably clamped with the two conveying belts respectively is arranged in the rack, and a control assembly corresponding to the positions of the adjusting assembly, the probe test module and the conveying belts is arranged in the rack; when the control assembly is started, the two conveyor belts can be driven to separate towards the front side and the rear side through the adjusting assembly, so that the circuit board is separated from the conveyor belts and falls onto the control assembly;
the conveying assembly further comprises two rollers which are rotationally connected with the frame, the conveyor belt is sleeved on the two rollers to form movement, and a motor fixedly connected with the frame is fixedly arranged at the end part of one roller;
the adjusting component comprises four ferrules movably sleeved outside the roller wheels, the four ferrules are correspondingly arranged on the front side and the rear side of the conveyor belt in pairs, a transverse plate is fixedly arranged between the two ferrules on the front side and the rear side of the conveyor belt, a first spring is fixedly arranged between the two ferrules on the inner side, and long plates corresponding to the positions of the control component are fixedly arranged on the surfaces of the two ferrules on the inner side;
the control assembly comprises an air cylinder fixedly connected with the frame, a carrier plate for supporting the circuit board is fixedly arranged on an output shaft of the air cylinder, side plates are fixedly arranged on two sides of the carrier plate, and wedge-shaped blocks corresponding to the positions of the long plates are fixedly arranged at the bottoms of the side plates;
the top surface of the wedge block is provided with an arc-shaped part, when the arc-shaped part is contacted with the long plates, the two long plates can be driven to separate from each other at the front side and the rear side, and when the arc-shaped part is separated from the long plates and the wedge block continuously ascends, the long plates can keep a front-rear separation state still;
the surface of the carrier plate penetrates through the carrier plate and is slidably provided with a push rod protruding relative to the top of the carrier plate, and a moving assembly for supporting the push rod is arranged between the side plate and the frame; when the long plate is contacted with the arc-shaped part, the ejector rod is synchronously contacted with the circuit board or the circuit board is jacked up by the moving assembly;
the movable assembly comprises a supporting plate which is in sliding fit with the side plate and is used for supporting the ejector rod, a placement hole for placing the supporting plate is formed in the surface of the side plate, a first pull rope fixedly connected with the rack is fixedly arranged on the surface of the supporting plate, a second spring is fixedly arranged between the bottom surface of the supporting plate and the placement hole, and the supporting plate has a tendency of vertically rising along the placement hole under the action of the second spring;
the carrier plate consists of an inner plate positioned in the middle and outer plates positioned at the front side and the rear side, the two outer plates are rotationally connected with the inner plate, bosses are fixedly arranged at the front side and the rear side of the ejector rod, a connecting component which corresponds to the boss in position and is fixedly connected with the outer plates is arranged in the carrier plate, and an avoidance hole is formed at the bottom of the carrier plate and corresponds to the position of the ejector rod;
the connecting assembly comprises a push block in sliding fit with the avoidance hole, a second pull rope is fixedly connected between the push block and the outer plate, and a third spring is fixedly installed between the push block and the avoidance hole.
2. The test fixture of the vehicular center control circuit board according to claim 1, wherein the distance between the ejector rod and the top of the carrier plate is larger than the thickness of the conveyor belts, and the ejector rod is located in the middle of the two conveyor belts.
3. The test fixture of a vehicular center control circuit board according to claim 1, wherein the first pull rope is provided with a margin, and the margin of the first pull rope is completely straightened when the ejector pin is in synchronous contact with the circuit board or the circuit board has been lifted up.
4. A test structure of a vehicular central control circuit board, characterized by comprising the test jig according to any one of claims 1 to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310595913.1A CN116660589B (en) | 2023-05-23 | 2023-05-23 | Test fixture and test structure of automobile-used well accuse circuit board |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310595913.1A CN116660589B (en) | 2023-05-23 | 2023-05-23 | Test fixture and test structure of automobile-used well accuse circuit board |
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| CN116660589A CN116660589A (en) | 2023-08-29 |
| CN116660589B true CN116660589B (en) | 2024-01-23 |
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| CN202310595913.1A Active CN116660589B (en) | 2023-05-23 | 2023-05-23 | Test fixture and test structure of automobile-used well accuse circuit board |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117092490A (en) * | 2023-10-09 | 2023-11-21 | 深圳市凌科凯特电子有限公司 | Automatic detection jig suitable for PCB |
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| CN116660589A (en) | 2023-08-29 |
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