CN107543943B - Compound micropin test fixture - Google Patents
Compound micropin test fixture Download PDFInfo
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- CN107543943B CN107543943B CN201610494138.0A CN201610494138A CN107543943B CN 107543943 B CN107543943 B CN 107543943B CN 201610494138 A CN201610494138 A CN 201610494138A CN 107543943 B CN107543943 B CN 107543943B
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Abstract
The invention relates to the technical field of PCB measuring jigs, and discloses a composite microneedle testing jig which is formed by combining an upper die and a lower die, wherein the upper die and the lower die both comprise a dial and a wire coil, and the dial and the wire coil are sequentially arranged in parallel and stacked together by using fiberboard layers; the dial is provided with a steel needle for testing and a PCB (printed circuit board) alignment PIN for positioning, and the dial is also provided with a fixed support for fixed support; the fixing support is provided with a layering block for separating two adjacent fiber board layers; the wire coil is provided with a sleeve-shaped spring wire, one end of the spring wire is connected with the steel needle, the other end of the spring wire is fixed with the ox horn, and the ox horn is fixed on the peripheral ox horn side frame strip. The invention has the advantages of simple integral structure, strong universality, low cost, short manufacturing period of the jig, labor cost saving and capability of improving the testing capability of the composite jig.
Description
Technical Field
The invention relates to the technical field of PCB measuring jigs, in particular to a composite microneedle testing jig.
Background
The PCB is known by its chinese name as a printed circuit board, which is a carrier for mounting electronic components and also a provider of electrical connections for electronic components, and thus is an important electronic component. In order to ensure that the quality of a product using the PCB is absolutely guaranteed, the test work after the PCB is manufactured is very important.
The existing common composite jig structure cannot use a steel needle with the diameter smaller than 0.12mm, along with the continuous development of a PCB, the manufacturing process is limited, the common two-wire test cannot meet the requirements, a large number of PCB manufacturers require four-wire tests for some important part circuits, and the precision of the PCB test is ensured. Therefore, the requirement on the needle type of the test fixture is smaller, the diameter of the steel needle needs to reach a micro needle (the diameter is 0.1mm and below), for some small bonding pads, two needles need to be arranged on one small bonding pad, the two needles are not short-circuited when the needles are arranged, a high-density PCB board can not be tested by adopting the common existing needle type fixture, and a good test effect can be achieved only by using the test fixture of the micro needle.
Disclosure of Invention
The invention aims to solve the technical problems in the prior art, and provides a composite microneedle testing jig which is simple in overall structure, high in universality, low in cost, short in manufacturing period, labor-saving and capable of improving the testing capability of a steel needle.
In order to solve the problems proposed above, the technical scheme adopted by the invention is as follows:
a composite microneedle test fixture is formed by combining an upper die and a lower die, wherein the upper die and the lower die both comprise a dial and a wire coil, and the dial and the wire coil are sequentially arranged in parallel by using fiberboard layers and are stacked together;
the dial is provided with a steel needle for testing and a PCB (printed circuit board) contraposition PIN for positioning, and the dial is also provided with a fixed support for fixing; the fixing support is provided with a layering block for separating two adjacent fiber board layers;
the wire coil is provided with a sleeve-shaped spring wire, one end of the spring wire is connected with the steel needle, the other end of the spring wire is fixed with the ox horn, and the ox horn is fixed on the peripheral ox horn side frame strip.
The fiber board layer of the dial comprises a 3mm fiber board A, a 0.3mm fiber board B, a 4mm fiber board C and a 0.5mm fiber board D, and a first fiber board A, a first fiber board B, a first fiber board C, four layers of first fiber boards D, a second fiber board B, a second fiber board A, a third fiber board B and a third fiber board A are sequentially arranged from top to bottom;
the fiber board layer of the wire coil comprises a 4mm fiber board C, a 3mm fiber board A and a10 mm fiber board E, the wire coil is arranged in parallel with the fiber board layer of the needle dial, and a second fiber board C, four layers of fourth fiber boards A and four layers of fiber boards E are sequentially arranged from top to bottom; the second fiberboard C is positioned below the third fiberboard A, and two layers of second fiberboards D are arranged between the second fiberboard C and the third fiberboard A.
The fixed support is arranged in through holes in a first fiberboard A, a first fiberboard B, a first fiberboard C, four layers of first fiberboards D, a second fiberboard B, a second fiberboard A, a third fiberboard B and a third fiberboard A; the outer surface of the fixing support is provided with 5 layers of layering blocks, and the four layers of first fiber boards D, the top layer and the bottom layer of the four layers of first fiber boards D are respectively separated from the first fiber board C and the second fiber board B through the layering blocks; the outer surface of the fixed support is also provided with a step for separating the third fiber board A from the third fiber board B.
Sponge is arranged between the bottom layers of the second fiber board B and the four layers of the first fiber board D and on the second fiber board B, and is used for clamping the steel needles.
The height of layering piece is 3mm, the thickness of sponge is 1.5 mm.
The dial is also provided with small support columns which play a role in supporting and fixing, namely the small support columns penetrate through the first fiber board B, the first fiber board C, the four layers of the first fiber board D, the second fiber board B and the second fiber board A, one end of each small support column is pressed against the first fiber board A, and the other end of each small support column is pressed against the third fiber board B and the third fiber board A; the first fiber board A, the first fiber board B and the first fiber board C are further connected and fixed through panel positioning pins.
The drum adopts the drum pillar to fix, and it runs through four layers of fourth fibreboard A in proper order promptly, the pillar screw is all being installed on the bottom and the top of drum pillar, fixes second fibreboard C and fibreboard E at four layers of fourth fibreboard A's top layer and bottom respectively through the pillar screw.
The wire coil and the needle coil are fixed by adopting a needle coil combination column, and the needle coil and the wire coil are aligned by wire coil pins, namely the wire coil pins sequentially penetrate through four layers of fourth fiber plates A, a second fiber plate C and two layers of second fiber plates D and then are connected with a third fiber plate A and a third fiber plate B; the needle dial combination column penetrates through the whole needle dial and the two layers of second fiber plates D, the top end of the needle dial combination column fixes the first fiber plate A and the first fiber plate B on the needle dial combination column through combination column screws, and the bottom end of the needle dial combination column connects the third fiber plate A and the two layers of second fiber plates D together; and the four layers of fourth fiber plates A and the second fiber plates C of the wire coil are fixed through combination column screws.
And through holes for installing sleeve-type spring wires are also formed in the second fiber plate C and the fourth fiber plate A of the wire coil corresponding to the pinholes, and the aperture of the lowest layer of the fourth fiber plate A is smaller than the diameter of the sleeve-type spring wires.
The periphery of the dial is also provided with a side frame strip, and two ends of the side frame strip are connected with the end parts of the first fiberboard C, the third fiberboard B and the third fiberboard A; the both ends of drum also are provided with the ox horn frame strip that is used for fixed ox horn, and four layers fourth fibreboard A are connected to its one end, and the fibreboard E is connected to the other end.
Compared with the prior art, the invention has the beneficial effects that:
the wire coil adopts spring wires with sleeves, the needle dial is fixed by the fixing support columns, and the layering blocks are further arranged on the fixing support columns, so that the number of layers of the jig can be increased, the interlayer spacing of the middle layers is reduced, steel needles can easily penetrate through the sponge layer to reach the last layer during needle inserting, the front and back contact pins are well inserted, the needle clamping phenomenon with the spring wires can not occur when non-insulating steel needles with the diameter of 0.07mm are tested in the structure, the needles are not easy to bend, short circuit and break, and the testing capability of the non-insulating steel needles is improved;
in addition, the needle dial and the wire coil of the invention both adopt common fiber board layers, the material processing is simple, the cost is low, the manufacturing period of the jig is short, the labor cost is saved, the overall structure is simple, the universality is strong, the invention is suitable for a large number of special test machine types, and the test files which can simultaneously test two lines and four lines are verified and used by matching with the machine, so that the composite micro-needle jig can achieve the function of simultaneously testing two lines and four lines.
Drawings
Fig. 1 is a schematic structural view of a composite microneedle test fixture according to the present invention.
Fig. 2 is a front view of an upper mold or a lower mold in the present invention.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Referring to fig. 1, the composite microneedle test fixture provided by the invention is formed by combining an upper die and a lower die, wherein the upper die and the lower die both comprise a dial and a wire coil, and the dial and the wire coil are sequentially arranged in parallel and stacked together by using fiberboard layers for testing a PCB 130 (see fig. 2).
The dial is provided with a steel needle 60 for testing and a PCB contraposition PIN100 for positioning, and the dial is also provided with a fixed support column 20. The fixing strut 20 is provided with a layering block 201 for separating the adjacent two fiber board layers.
The wire coil is provided with a sleeve-shaped spring wire 70, one end of the spring wire is connected with the steel needle 60, the other end of the spring wire is fixed with the ox horn, and the ox horn is fixed on the peripheral ox horn side frame strip.
In the foregoing, the fiberboard layer of the dial includes a 3mm fiberboard a101, a 0.3mm fiberboard B102, a 4mm fiberboard C103 and a 0.5mm fiberboard D104, which are sequentially provided with a first fiberboard a101, a first fiberboard B102, a first fiberboard C103, four layers of the first fiberboard D104, a second fiberboard B102, a second fiberboard a101, a third fiberboard B102 and a third fiberboard a101 from top to bottom.
The fiberboard layer of the wire coil comprises a 4mm fiberboard C103, a 3mm fiberboard A101 and a10 mm fiberboard E105, the wire coil is arranged in parallel with the fiberboard layer of the needle dial, and a second fiberboard C103, four layers of fourth fiberboards A101 and the fiberboard E105 are sequentially arranged from top to bottom. The second fiber board C103 is located below the third fiber board a101, two layers of second fiber boards D104 are further disposed between the second fiber board C103 and the third fiber board a101, and the PCB 130 is located above the first fiber board a 101. The first, second, third and fourth designations are used to indicate the order in which the same type of fiberboard appears.
In the above, the first fiber board a101, the first fiber board B102, the first fiber board C103, the four layers of the first fiber board D104, the second fiber board B102, the second fiber board a101, the third fiber board B102 and the third fiber board a101 of the dial are all provided with through holes, and are mounted in the through holes by using the fixing support 20 to play a fixing role. Further, the outer surface of the fixing strut 20 is sleeved with 5 layers of layering blocks 201, and each layering block 201 is clamped between two adjacent fiber boards, namely, between four layers of first fiber boards D104, and between the top layer and the bottom layer of the four layers of first fiber boards D104 and the first fiber board C103 and the second fiber board B102, respectively, separated by the layering blocks 201, so as to separate the multiple layers of fiber boards.
In this embodiment, the top end and the bottom end of the fixing pillar 20 are respectively provided with a screw hole, the fixing screws 202 are installed in the screw holes at both ends, and the third fiber board a101 and the third fiber board B102 are stacked together and pressed against the bottom end of the fixing pillar 20. The outer surface of the fixing post 20 is further formed with a step for separating the third fiber sheet a101 from the third fiber sheet B102. The top set screw 202 is fixed to the top end of the set post 20, thereby fixing the top first fiberboard a101 and the first fiberboard B102. The supporting structure can be supported only by adopting a plurality of fixed supporting columns 20 and a plurality of layering blocks 201, the height of the layering blocks 201 is required to be uniform, the spacing between two layers of the separated layers is 2.8-3.2 mm, and the height of the layering blocks 201 is 3 mm.
In the above, a sponge 120 with a thickness of 1.5mm is further disposed between the second fiber board B102 and the bottom layer of the four layers of the first fiber board D104 and on the second fiber board B102, and is used for clamping the steel needle 60, so that the steel needle moves up and down and does not fall off.
In the foregoing, still be equipped with 3 at least groups of through-holes that are used for installing PCB counterpoint PIN on the dial for fixed PCB counterpoint PIN100, PCB board 130 is placed in the top of dial, and PCB counterpoint PIN100 then is used for fixing a position PCB board 130.
In the above, in order to ensure the stability of the whole structure, as shown in fig. 2, the dial is further provided with a small pillar 50 for supporting and fixing, that is, the small pillar 50 passes through the first fiber board B102, the first fiber board C103, the four layers of the first fiber board D104, the second fiber board B102 and the second fiber board a101, one end of the small pillar is pressed against the first fiber board a, and the other end of the small pillar is pressed against the third fiber board B and the third fiber board a, so that the whole structure is firm and flat. The first fiber board a101, the first fiber board B102 and the first fiber board C103 are further connected and fixed by a panel positioning pin 140.
Continuing to refer to and shown in figure 2, the drum adopts drum pillar 30 to fix, and drum pillar 30 runs through four layers of fourth fibreboard A101 in proper order promptly, the bottom and the top of drum pillar 30 all are equipped with the screw hole, and the screw hole at both ends is installing pillar screw 301, fixes second fibreboard C103 and fibreboard E105 at the top layer and the bottom of four layers of fourth fibreboard A101 respectively through pillar screw 301, can separate four layers of fourth fibreboard A101 and fibreboard E105 with drum pillar 30, and this structure must be equipped with a plurality of drum pillars 30, just can guarantee overall structure's bearing and withstand voltage.
The second fiberboard C103 and the four layers of fourth fiberboards A101 of the wire coil are correspondingly provided with a plurality of through holes corresponding to the pinholes and used for installing the sleeve-type spring wire 70, the hole diameter of the lowest layer of the four layers of fourth fiberboards A101 is smaller than the diameter of the sleeve-type spring wire 70, so that the spring wire 70 is guaranteed not to fall off, a plurality of steel needles and the spring wire are arranged inside the spring wire, and the sleeve-type spring wire 70 corresponds to the steel needles 60 on the needle dial one by one.
In the above, the reel and the dial are fixed by the dial combination column 80, and the dial and the reel are aligned by the dial pins 40, so that the steel needles 60 and the sleeve-type spring wires 70 can be in one-to-one correspondence, that is, the third fiber plate a101 and the third fiber plate B102 are connected after the dial pins 40 sequentially penetrate through the four layers of the fourth fiber plate a101, the second fiber plate C103 and the two layers of the second fiber plates D104. The dial combination column 80 penetrates through the entire dial and the two layers of second fiber plates D104, the top ends of the dial combination column fix the first fiber plates A101 and the first fiber plates B102 on the dial combination column 80 through combination column screws 801, and the bottom ends of the dial combination column connect the third fiber plates A101 and the two layers of second fiber plates D104 together. The four layers of the fourth fiber plate A101 and the second fiber plate C103 of the wire coil are also fixed through a combination column screw 801.
In the invention, the periphery of the dial is also provided with the side frame strips 90, two ends of each side frame strip 90 are connected with the end parts of the first fiberboard C103, the third fiberboard B102 and the third fiberboard A101, and two ends of each side frame strip 90 are fixed through the screws 901, so that the layering height of the internal structure and the thickness of the board of the clamp dial are prevented from being displayed outside, and the clamp looks more beautiful and elegant.
In the invention, the two ends of the wire coil are also provided with ox horn frame strips 110 for fixing ox horns, one end of each of the ox horn frame strips is connected with the four layers of fourth fiber plates A101 through screws, and the other end of each of the ox horn frame strips is connected with the fiber plates E105 through screws.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (8)
1. The utility model provides a compound micropin test fixture, this tool adopts mould and lower mould combination to form its characterized in that: the upper die and the lower die comprise a dial and a wire coil, and the dial and the wire coil are sequentially arranged in parallel by adopting fiber board layers and are stacked together;
the fiber board layer of the dial comprises a 3mm fiber board A, a 0.3mm fiber board B, a 4mm fiber board C and a 0.5mm fiber board D, and a first fiber board A, a first fiber board B, a first fiber board C, four layers of first fiber boards D, a second fiber board B, a second fiber board A, a third fiber board B and a third fiber board A are sequentially arranged from top to bottom;
the dial is provided with a steel needle for testing and a PCB (printed circuit board) contraposition PIN for positioning, and the dial is also provided with a fixed support for fixing; the fixing support is provided with a layering block for separating two adjacent fiber board layers;
the wire coil is provided with a sleeve-shaped spring wire, one end of the spring wire is connected with the steel needle, the other end of the spring wire is fixed with the ox horn, and the ox horn is fixed on the peripheral ox horn side frame strip;
the fiber board layer of the wire coil comprises a 4mm fiber board C, a 3mm fiber board A and a10 mm fiber board E, the wire coil is arranged in parallel with the fiber board layer of the needle dial, and a second fiber board C, four layers of fourth fiber boards A and four layers of fiber boards E are sequentially arranged from top to bottom; the second fiber board C is positioned below the third fiber board A, and two layers of second fiber boards D are arranged between the second fiber board C and the third fiber board A;
and through holes for installing sleeve-type spring wires are also formed in the second fiber plate C and the fourth fiber plate A of the wire coil corresponding to the pinholes, and the aperture of the lowest layer of the fourth fiber plate A is smaller than the diameter of the sleeve-type spring wires.
2. The composite microneedle test fixture of claim 1, wherein: the fixed support is arranged in through holes in a first fiberboard A, a first fiberboard B, a first fiberboard C, four layers of first fiberboards D, a second fiberboard B, a second fiberboard A, a third fiberboard B and a third fiberboard A; the outer surface of the fixing support is provided with 5 layers of layering blocks, and the four layers of first fiber boards D, the top layer and the bottom layer of the four layers of first fiber boards D are respectively separated from the first fiber board C and the second fiber board B through the layering blocks; the outer surface of the fixed support is also provided with a step for separating the third fiber board A from the third fiber board B.
3. The composite microneedle test fixture of claim 2, wherein: sponge is arranged between the bottom layers of the second fiber board B and the four layers of the first fiber board D and on the second fiber board B, and is used for clamping the steel needles.
4. The composite microneedle test fixture of claim 3, wherein: the height of layering piece is 3mm, the thickness of sponge is 1.5 mm.
5. The composite microneedle test fixture of claim 4, wherein: the dial is also provided with small support columns which play a role in supporting and fixing, namely the small support columns penetrate through the first fiber board B, the first fiber board C, the four layers of the first fiber board D, the second fiber board B and the second fiber board A, one end of each small support column is pressed against the first fiber board A, and the other end of each small support column is pressed against the third fiber board B and the third fiber board A; the first fiber board A, the first fiber board B and the first fiber board C are further connected and fixed through panel positioning pins.
6. The composite microneedle test fixture of claim 5, wherein: the drum adopts the drum pillar to fix, and it runs through four layers of fourth fibreboard A in proper order promptly, the pillar screw is all being installed on the bottom and the top of drum pillar, fixes second fibreboard C and fibreboard E at four layers of fourth fibreboard A's top layer and bottom respectively through the pillar screw.
7. The composite microneedle test fixture of claim 6, wherein: the wire coil and the needle coil are fixed by adopting a needle coil combination column, and the needle coil and the wire coil are aligned by wire coil pins, namely the wire coil pins sequentially penetrate through four layers of fourth fiber plates A, a second fiber plate C and two layers of second fiber plates D and then are connected with a third fiber plate A and a third fiber plate B; the needle dial combination column penetrates through the whole needle dial and the two layers of second fiber plates D, the top ends of the needle dial combination columns fix the first fiber plate A and the first fiber plate B on the needle dial combination column through combination column screws, and the bottom ends of the needle dial combination columns connect the third fiber plate A and the two layers of second fiber plates D together; and the four layers of fourth fiber plates A and the second fiber plates C of the wire coil are fixed through combination column screws.
8. The composite microneedle test fixture of claim 7, wherein: the periphery of the dial is also provided with a side frame strip, and two ends of the side frame strip are connected with the end parts of the first fiberboard C, the third fiberboard B and the third fiberboard A; the both ends of drum also are provided with the ox horn frame strip that is used for fixed ox horn, and four layers fourth fibreboard A are connected to its one end, and the fibreboard E is connected to the other end.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610494138.0A CN107543943B (en) | 2016-06-29 | 2016-06-29 | Compound micropin test fixture |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610494138.0A CN107543943B (en) | 2016-06-29 | 2016-06-29 | Compound micropin test fixture |
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| CN107543943A CN107543943A (en) | 2018-01-05 |
| CN107543943B true CN107543943B (en) | 2020-03-17 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108490332B (en) * | 2018-02-02 | 2021-01-08 | 深圳麦逊电子有限公司 | Automatic micro-needle testing jig |
| CN110205660B (en) * | 2019-06-24 | 2020-11-03 | 东莞市连威电子有限公司 | Manual control electroplating method for transverse section of wire needle jig |
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| CN202018496U (en) * | 2011-03-18 | 2011-10-26 | 东莞市连威电子有限公司 | Duodecupled-density combined printed circuit board (PCB) test jig |
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Effective date of registration: 20200619 Address after: 518000 zone a, floor 2, floor 3, floor 5, zone a, plant 3, antuoshan hi tech Industrial Park, Xinsha Road, Shajing street, Bao'an District, Shenzhen City, Guangdong Province Patentee after: SHENZHEN MASON ELECTRONICS Co.,Ltd. Address before: 518000, No. 9 West West Road, Nanshan District hi tech park, Shenzhen, Guangdong Co-patentee before: SHENZHEN MASON ELECTRONICS Co.,Ltd. Patentee before: HAN'S LASER TECHNOLOGY INDUSTRY GROUP Co.,Ltd. |