CN102288792A - Test fixture - Google Patents
Test fixture Download PDFInfo
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- CN102288792A CN102288792A CN2011102085091A CN201110208509A CN102288792A CN 102288792 A CN102288792 A CN 102288792A CN 2011102085091 A CN2011102085091 A CN 2011102085091A CN 201110208509 A CN201110208509 A CN 201110208509A CN 102288792 A CN102288792 A CN 102288792A
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- guide pillar
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- needle
- hollow out
- contact device
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Abstract
The embodiment of the invention discloses a test fixture, and relates to the technical field of testing of printed circuit boards. The test fixture reduces misdetection and improves the test efficiency in the process of testing a printed circuit board, and comprises a primary contact device, a carrier plate arranged under the primary contact device, a test needle positioned under the carrier plate and a secondary contact device; the primary contact device downwards presses a board to be tested on the carrier plate to contact the test needle; the secondary contact device is arranged under the carrier plate and connected with the primary contact device; and in the process of downwards pressing the primary contact device, after the board to be tested is contacted with the test needle, the secondary contact device drives the test needle to be separated from the board to be tested, and afterwards drives the test needle to be contacted with the board to be tested again.
Description
Technical field
The present invention relates to the printed circuit board test technical field, relate in particular to a kind of test fixture.
Background technology
Printed circuit board (PCB) needs to experience a lot of links in process of production, and each link all needs the quality that corresponding testing tool comes testing product.Test fixture is the platform of a testing printed circuit board, its principle of work is to utilize testing needle with tested point on the printed circuit board (PCB) and the corresponding point conducting in the test machine, and then test machine can realize test to printed circuit board (PCB) by calling corresponding program.
At present; printed circuit board (PCB) adopts unleaded treatment process fully; (Organic Solderability Preservatives, OSP) PROCESS FOR TREATMENT is through forming layer protecting film on the printed circuit board (PCB) of OSP PROCESS FOR TREATMENT promptly organic solder resistant agent to be carried out on the surface of printed circuit board (PCB).When using existing test fixture that the printed circuit board (PCB) of process OSP PROCESS FOR TREATMENT is tested; the diaphragm of printed circuit board surface is difficult to tested needle-penetration; and then have influence on contacting of test point on testing needle and the printed circuit board (PCB); cause this kind carrying out on-line testing (In-Circuit Test through the printed circuit board (PCB) of OSP PROCESS FOR TREATMENT; ICT) or functional test (Functional Circuit Test; FCT) problem that exists more mistake to survey in the process; testing efficiency is reduced, increased testing cost.
Summary of the invention
Embodiments of the invention provide a kind of test fixture, realize contacting for twice between the testing needle of test point and test fixture on the printed circuit board (PCB), improved the contact stabilization between test point and the testing needle, the mistake that has reduced in the printed circuit board test process is surveyed, and has improved testing efficiency.
For achieving the above object, embodiments of the invention adopt following technical scheme:
A kind of test fixture, comprise: a contact device, be arranged on the support plate under the described contact device, be positioned at the testing needle under the described support plate, the board under test that a described contact device presses down on the compressing support plate contacts with described testing needle, described test fixture also comprises: the secondary contact device, described secondary contact device is arranged under the described support plate, be connected with a described contact device, a described contact device presses down in the process, with after described testing needle contacts, described secondary contact device drives described testing needle and leaves described board under test at described board under test, and drives described testing needle subsequently and contact with described board under test once more.
The test fixture that the embodiment of the invention provides, in traditional test fixture structure, add the secondary contact device, contact for twice that has realized testing needle in the test fixture and board under test, the testing needle that only possesses with respect to existing test fixture and board under test once contact function, the test fixture that the embodiment of the invention provides is in the process that once presses down, can make testing needle and board under test finish twice contacts, guaranteed the contact stabilization of testing needle and board under test, the mistake that has reduced in the printed circuit board test process is surveyed, and has improved testing efficiency.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of test fixture in the embodiment of the invention;
Fig. 2 is the structural representation of test fixture original state in the embodiment of the invention;
Structural representation when Fig. 3 begins to press down for test fixture in the embodiment of the invention;
Fig. 4 presses down structural representation in the process for test fixture in the embodiment of the invention;
Fig. 5 is the structural representation after test fixture presses down fully in the embodiment of the invention.
Description of reference numerals
1, support plate 2, pressing plate 21, elasticity pressure bar 3, first guide pillar 31, second spring 32, the 3rd spring 4, press from both sides 5 fast, press down fixed block 6, testing needle 7, base plate 8, side board 9, go up press fit piece 10, upper pressing arm 11, rocking bar 12, guide pillar fixed block 13, limited block 14, fixing spring 15, pin piece 16, needle plate 17, second guide pillar 18, stationary shaft 19, the 4th spring 20, first spring
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
The embodiment of the invention provides a kind of test fixture, and as shown in Figure 1, this test fixture comprises:
A contact device, comprise: be arranged on the support plate 1 under the contact device No. one time, be positioned at the testing needle 6 under the described support plate 1, a contact device presses down the board under test of oppressing on the support plate 1 and contacts with testing needle 6, No. one time contact device comprises: pressing plate 2, pressing plate 2 lower surfaces are provided with elasticity pressure bar 21, down either side at pressing plate 2 respectively is provided with at least two first guide pillars 3, first guide pillar 3 passes the support plate 1 that is positioned at pressing plate 2 belows, support plate 1 is provided with the hollow out zone, pressing plate 2 tops are provided with quick folder 4, and clamping fixes on and presses down on the fixed block 5 fast, presses down fixed block 5 bottoms and is arranged on the described support plate 1.
The secondary contact device, the secondary contact device is arranged on support plate 1 time, be connected with a contact device, No. one time contact device presses down in the process, at board under test with after described testing needle 6 contacts, the secondary contact device drives testing needle 6 and leaves described board under test, and drives testing needle 6 subsequently and contact with board under test once more.
The secondary contact device comprises: the needle plate 16 that is positioned at support plate 1 below, first guide pillar 3 passes needle plate 16, needle plate 16 upper and lower surfaces respectively have the hollow out zone and inside is provided with the pin piece, testing needle 6 is arranged on the pin piece, be provided with first spring between pin block edge top and the needle plate 16 upper surfaces below, needle plate 16 is arranged with the stop means that has the hollow out zone, the hollow out zone of stop means and the hollow out corresponding setting in zone of needle plate 16 bottoms, first guide pillar 3 passes stop means, stop means and support plate 1 are connected and fixed, first guide pillar between pressing plate 2 and the needle plate 16 is provided with second spring 31, first guide pillar between needle plate 16 and the stop means is provided with the 3rd spring 32, be provided with second guide pillar between stop means and the needle plate 16, second guide pillar is provided with the 4th spring, and stop means is arranged with pressure device, and the hollow out zone of stop means and the hollow out zone of needle plate 16 lower surfaces are passed in last pressure device top, be positioned at pin piece lower surface below, first guide pillar, 3 lower ends are provided with lower lock block.
A contact device presses down described second spring 31 is shunk, second spring 31 presses needle plate 16 downwards, making needle plate 16 its inner pin pieces of drive together prolong first guide pillar 3 moves down, contact with stop means until needle plate 16, make the testing needle 6 on the pin piece leave the board under test that is positioned on the support plate 1, after No. one time contact device pressed down fully, first guide pillar, 3 lower end lower lock blocks pressed pressure device and make the pressure device jack-up pin piece that makes progress, and the testing needle 6 on the pin piece is contacted with 1 board under test on the support plate once more.
In the embodiment of the invention, stop means comprises: the base plate 7 that is provided with the hollow out zone, first guide pillar 3 passes base plate 7, first guide pillar between needle plate 16 and the base plate 7 is provided with the 3rd spring 32, base plate 7 hollow outs zone and the needle plate 16 bottom hollow out corresponding settings in zone, be provided with two side boards 8 in base plate 7 both sides, side board 8 upper ends connect support plate 1, the lower end is connected with base plate 7, base plate 7 is provided with two limited blocks 13, two limited blocks 13 lay respectively at the both sides in base plate 7 hollow out zones, are provided with at least two second guide pillars between each limited block 13 and needle plate 16, and second guide pillar is provided with the 4th spring.
In the embodiment of the invention, last pressure device comprises: two last press fit pieces 9 that lay respectively at stop means hollow out zone down either side, last press fit piece 9 is provided with axis hole, be provided with stationary shaft in the axis hole, last press fit piece 9 arranged outside have rocking bar 11, last press fit piece 9 inboards are provided with upper pressing arm 10, rocking bar 11 upper ends are connected with the stationary shaft outside, upper pressing arm 10 lower ends are connected with stationary shaft is inboard, upper pressing arm 10 passes the hollow out zone of stop means and the hollow out zone of needle plate 16 lower surfaces, be connected with fixing spring 14 between upper pressing arm 10 and the last press fit piece 9, fixing spring 14 is kept the static position of upper pressing arm 10, upper pressing arm 10 upper ends are provided with upper pressure axial and hold, and upper pressure axial holds and is positioned at pin piece lower surface below.
In the embodiment of the invention, lower lock block comprises: with at least two the first guide pillar fixed blocks 12 that guide pillar 3 bottoms are connected of pressing plate 2 one sides, guide pillar fixed block 12 near on pressure device one end be provided with and press down bearing.
The original state of test fixture in the embodiment of the invention, as shown in Figure 2:
Base plate 7 hollow outs zone down either side is provided with two and goes up press fit piece 9, last press fit piece 9 is provided with axis hole, be provided with stationary shaft 18 in the axis hole, last press fit piece 9 arranged outside have rocking bar 11, last press fit piece inboard is provided with upper pressing arm 10, rocking bar 11 upper ends are connected with described stationary shaft 18 outsides, upper pressing arm 10 lower ends and 18 inboard connections of stationary shaft, upper pressing arm 10 passes the hollow out zone of base plate 7 and the hollow out zone of needle plate 16 lower surfaces, be connected with fixing spring between upper pressing arm 10 and the last press fit piece 9, fixing spring is kept the static position of upper pressing arm, upper pressing arm 10 upper ends are provided with upper pressure axial and hold, upper pressure axial holds and is positioned at pin piece 15 lower surfaces below, and two first guide pillar 3 bottoms of pressing plate 2 one sides are connected with guide pillar fixed block 12, is provided with near rocking bar 11 1 ends at guide pillar fixed block 12 and presses down bearing.
As shown in Figure 3, press from both sides 4 fast when beginning to press down, pressing plate 2 moves down, and the board under test on the elasticity pressure bar 21 compressing support plates 1 of pressing plate 2 belows contacts with the testing needle 6 on the pin piece, and promptly testing needle contacts with the first time of board under test and finishes;
As shown in Figure 4, folder 4 continues to press down fast, pressing plate 2 continues to move down, elasticity pressure bar 21 shrinks, pressing plate 2 compressings second spring 31, the second springs 31 shrink to lower compression needle plate 16, and needle plate 16 is moved downward on the limited block 13, the 4th spring 19 shrinks, and the testing needle 6 that is arranged on the needle plate 16 pin pieces leaves board under test;
As shown in Figure 5, after folder 4 presses down fully fast, first guide pillar 3 drives guide pillar fixed block 12 and moves downward, guide pillar fixed block 12 1 ends press down bearing to lower compression rocking bar 11, rocking bar 11 is stressed to serve as axially to rotate down with stationary shaft 18, driving the upper pressing arm 10 that is connected with rocking bar 11 serves as axially to go up to rotate with stationary shaft 18, the upper pressure axial on upper pressing arm 10 tops holds upwards jack-up pin piece 15, the 4th spring 20 between pin piece 15 and the needle plate 16 shrinks, make the testing needle 6 on the pin piece 15 contact with board under test on the support plate 1 once more, testing needle contacts with the second time of board under test and finishes.
The test fixture that the embodiment of the invention provides, in traditional test fixture structure, add the secondary contact device, contact for twice that has realized testing needle in the test fixture and board under test, the testing needle that only possesses with respect to existing test fixture and board under test once contact function, the test fixture that the embodiment of the invention provides is in the process that once presses down, can make testing needle and board under test finish twice contacts, guaranteed the contact stabilization of testing needle and board under test, the mistake that has reduced in the printed circuit board test process is surveyed, and has improved testing efficiency.
The above; only be the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion by described protection domain with claim.
Claims (10)
1. test fixture, comprise: a contact device, be arranged on the support plate under the described contact device, be positioned at the testing needle under the described support plate, the board under test that a described contact device presses down on the compressing support plate contacts with described testing needle, described test fixture also comprises: the secondary contact device, described secondary contact device is arranged under the described support plate, be connected with a described contact device, a described contact device presses down in the process, with after described testing needle contacts, described secondary contact device drives described testing needle and leaves described board under test at described board under test, and drives described testing needle subsequently and contact with described board under test once more.
2. test fixture according to claim 1, it is characterized in that, a described contact device comprises: pressing plate, described pressing plate lower surface is provided with the elasticity pressure bar, respectively is provided with at least two first guide pillars in the down either side of described pressing plate, and described first guide pillar passes the described support plate that is positioned at the pressing plate below, described support plate is provided with the hollow out zone, described pressing plate top is provided with quick folder, and described quick clamping fixes on and presses down on the fixed block, and the described fixed block bottom that presses down is arranged on the described support plate.
3. test fixture according to claim 1 and 2, it is characterized in that, described secondary contact device comprises: the needle plate that is positioned at described support plate below, described first guide pillar passes described needle plate, described needle plate upper and lower surface respectively has the hollow out zone and inside is provided with the pin piece, described testing needle is arranged on the described pin piece, be provided with first spring between described pin block edge top and the described needle plate upper surface below, described needle plate is arranged with the stop means that has the hollow out zone, the hollow out zone corresponding setting of the hollow out zone of described stop means bottom described needle plate, described first guide pillar passes described stop means, described stop means and described support plate are connected and fixed, first guide pillar between described pressing plate and the described needle plate is provided with second spring, first guide pillar between described needle plate and the described stop means is provided with the 3rd spring, be provided with second guide pillar between described stop means and the described needle plate, described second guide pillar is provided with the 4th spring, described stop means is arranged with pressure device, the hollow out zone of described stop means and the hollow out zone of described needle plate lower surface are passed in described upward pressure device top, be positioned at described pin piece lower surface below, the described first guide pillar lower end is provided with lower lock block;
A described contact device presses down described second spring is shunk, second spring presses needle plate downwards, the described pin piece that makes described needle plate drive its inside together prolongs first guide pillar and moves down, contact with described stop means until described needle plate, make the testing needle on the pin piece leave the board under test that is positioned on the support plate, after a described contact device presses down fully, the first guide pillar lower end lower lock block presses the described pressure device of going up and makes the described pressure device described pin piece of jack-up that makes progress of going up, and the testing needle on the described pin piece is contacted with board under test on the support plate once more.
4. test fixture according to claim 3, it is characterized in that, described stop means comprises: the base plate that is provided with the hollow out zone, described first guide pillar passes described base plate, first guide pillar between described needle plate and the described base plate is provided with the 3rd spring, described base plate hollow out zone and the hollow out corresponding setting in zone of described needle plate bottom, be provided with two side boards in the base plate both sides, described side board upper end connects described support plate, the lower end is connected with described base plate, described base plate is provided with two limited blocks, described two limited blocks lay respectively at the both sides in described base plate hollow out zone, be provided with at least two second guide pillars between each described limited block and described needle plate, described second guide pillar is provided with the 4th spring.
5. test fixture according to claim 3, it is characterized in that, the described pressure device of going up comprises: two last press fit pieces that lay respectively at stop means hollow out zone down either side, the described press fit piece of going up is provided with axis hole, be provided with stationary shaft in the described axis hole, the described press fit piece arranged outside that goes up has rocking bar, the described press fit piece inboard of going up is provided with upper pressing arm, described rocking bar upper end is connected with the described stationary shaft outside, described upper pressing arm lower end is connected with described stationary shaft is inboard, described upper pressing arm passes the hollow out zone of described stop means and the hollow out zone of described needle plate lower surface, described upper pressing arm and described going up between the press fit piece are connected with fixing spring, described fixing spring is kept the static position of upper pressing arm, and described upper pressing arm upper end is provided with upper pressure axial and holds, and described upper pressure axial holds and is positioned at described pin piece lower surface below.
6. test fixture according to claim 4, it is characterized in that, the described pressure device of going up comprises: two last press fit pieces that lay respectively at stop means hollow out zone down either side, the described press fit piece of going up is provided with axis hole, be provided with stationary shaft in the described axis hole, the described press fit piece arranged outside that goes up has rocking bar, the described press fit piece inboard of going up is provided with upper pressing arm, described rocking bar upper end is connected with the described stationary shaft outside, described upper pressing arm lower end is connected with described stationary shaft is inboard, described upper pressing arm passes the hollow out zone of described stop means and the hollow out zone of described needle plate lower surface, described upper pressing arm and described going up between the press fit piece are connected with fixing spring, described fixing spring is kept the static position of upper pressing arm, and described upper pressing arm upper end is provided with upper pressure axial and holds, and described upper pressure axial holds and is positioned at described pin piece lower surface below.
7. test fixture according to claim 3 is characterized in that, described lower lock block comprises: the guide pillar fixed block that is connected with at least two first guide pillar bottoms of described pressing plate one side, pressure device one end is provided with and presses down bearing on the guide pillar fixed block is close.
8. test fixture according to claim 4 is characterized in that, described lower lock block comprises: the guide pillar fixed block that is connected with at least two first guide pillar bottoms of described pressing plate one side, pressure device one end is provided with and presses down bearing on the guide pillar fixed block is close.
9. test fixture according to claim 5 is characterized in that, described lower lock block comprises: the guide pillar fixed block that is connected with at least two first guide pillar bottoms of described pressing plate one side, pressure device one end is provided with and presses down bearing on the guide pillar fixed block is close.
10. test fixture according to claim 6 is characterized in that, described lower lock block comprises: the guide pillar fixed block that is connected with at least two first guide pillar bottoms of described pressing plate one side, pressure device one end is provided with and presses down bearing on the guide pillar fixed block is close.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110208509 CN102288792B (en) | 2011-07-22 | 2011-07-22 | Test fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110208509 CN102288792B (en) | 2011-07-22 | 2011-07-22 | Test fixture |
Publications (2)
| Publication Number | Publication Date |
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| CN102288792A true CN102288792A (en) | 2011-12-21 |
| CN102288792B CN102288792B (en) | 2013-10-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110208509 Active CN102288792B (en) | 2011-07-22 | 2011-07-22 | Test fixture |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102699665A (en) * | 2012-05-21 | 2012-10-03 | 昆山迈致治具科技有限公司 | Pressing jig for tablet personal computer casing TPU (thermal receiver unit) angle bead |
| CN102735885A (en) * | 2012-06-29 | 2012-10-17 | 昆山迈致治具科技有限公司 | Circuit board testing jig |
| CN102928771A (en) * | 2012-11-15 | 2013-02-13 | 昆山迈致治具科技有限公司 | PCB testing jig |
| CN102967806A (en) * | 2012-11-09 | 2013-03-13 | 昆山迈致治具科技有限公司 | High-voltage measuring jig |
| CN104511865A (en) * | 2014-12-30 | 2015-04-15 | 苏州工业园区博亨电子有限公司 | Automatic joint switching test device |
| CN105467167A (en) * | 2015-12-10 | 2016-04-06 | 苏州世纪福智能装备股份有限公司 | An ESD raw material radio frequency performance inspection clamp |
| CN108132366A (en) * | 2018-02-09 | 2018-06-08 | 昆山威典电子有限公司 | A kind of test fixture |
| CN108459265A (en) * | 2018-04-04 | 2018-08-28 | 威胜集团有限公司 | A kind of device for testing circuit board function |
| CN108593981A (en) * | 2018-04-20 | 2018-09-28 | 上海埃斯凯变压器有限公司 | Transformer fixture and transformer clamping device |
| CN109358283A (en) * | 2018-12-05 | 2019-02-19 | 黎鹏飞 | Automatic testing equipment |
| CN109828125A (en) * | 2019-03-15 | 2019-05-31 | 珠海市运泰利自动化设备有限公司 | Simple clamp is used in a kind of manual PCB debugging |
| CN109917276A (en) * | 2019-04-15 | 2019-06-21 | 天地（常州）自动化股份有限公司 | Multifunction circuit board automatic test equipment, test macro and test method |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102699665B (en) * | 2012-05-21 | 2014-06-18 | 昆山迈致治具科技有限公司 | Pressing jig for tablet personal computer casing TPU (thermal receiver unit) angle bead |
| CN102699665A (en) * | 2012-05-21 | 2012-10-03 | 昆山迈致治具科技有限公司 | Pressing jig for tablet personal computer casing TPU (thermal receiver unit) angle bead |
| CN102735885A (en) * | 2012-06-29 | 2012-10-17 | 昆山迈致治具科技有限公司 | Circuit board testing jig |
| CN102967806B (en) * | 2012-11-09 | 2016-04-13 | 昆山迈致治具科技有限公司 | Survey high pressure tool |
| CN102967806A (en) * | 2012-11-09 | 2013-03-13 | 昆山迈致治具科技有限公司 | High-voltage measuring jig |
| CN102928771A (en) * | 2012-11-15 | 2013-02-13 | 昆山迈致治具科技有限公司 | PCB testing jig |
| CN104511865A (en) * | 2014-12-30 | 2015-04-15 | 苏州工业园区博亨电子有限公司 | Automatic joint switching test device |
| CN105467167A (en) * | 2015-12-10 | 2016-04-06 | 苏州世纪福智能装备股份有限公司 | An ESD raw material radio frequency performance inspection clamp |
| CN108132366A (en) * | 2018-02-09 | 2018-06-08 | 昆山威典电子有限公司 | A kind of test fixture |
| CN108459265A (en) * | 2018-04-04 | 2018-08-28 | 威胜集团有限公司 | A kind of device for testing circuit board function |
| CN108459265B (en) * | 2018-04-04 | 2024-03-19 | 威胜集团有限公司 | Circuit board function test device |
| CN108593981A (en) * | 2018-04-20 | 2018-09-28 | 上海埃斯凯变压器有限公司 | Transformer fixture and transformer clamping device |
| CN109358283A (en) * | 2018-12-05 | 2019-02-19 | 黎鹏飞 | Automatic testing equipment |
| CN109828125A (en) * | 2019-03-15 | 2019-05-31 | 珠海市运泰利自动化设备有限公司 | Simple clamp is used in a kind of manual PCB debugging |
| CN109917276A (en) * | 2019-04-15 | 2019-06-21 | 天地（常州）自动化股份有限公司 | Multifunction circuit board automatic test equipment, test macro and test method |
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| Publication number | Publication date |
|---|---|
| CN102288792B (en) | 2013-10-02 |
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