CN110824342B - A test fixture for SOP encapsulation components and parts - Google Patents
A test fixture for SOP encapsulation components and parts Download PDFInfo
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- CN110824342B CN110824342B CN201911110331.XA CN201911110331A CN110824342B CN 110824342 B CN110824342 B CN 110824342B CN 201911110331 A CN201911110331 A CN 201911110331A CN 110824342 B CN110824342 B CN 110824342B
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- pair
- limiting
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- groove
- side wall
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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]
- G01R31/2896—Testing of IC packages; Test features related to IC packages
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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
Abstract
The invention discloses a test fixture for an SOP (self-aligned package) component.A discharging port which penetrates upwards is formed on the upper side wall of a limiting moving groove; the limiting test device comprises a pair of limiting test frames which are symmetrically arranged left and right and a pair of limiting plates which are symmetrically arranged front and back; the pair of limiting test frames and the pair of limiting plates are positioned in the limiting moving grooves; the pair of limiting test frames are arranged in a left-right movement mode and are synchronously far away from or close to each other; the pair of limiting plates are arranged in a front-back movement mode and synchronously far away from or close to each other; the centers of the pair of limiting plates are elastically lifted and provided with L-shaped upper and lower limiting blocks; the lower end faces of the horizontal parts of the pair of upper and lower limiting blocks are formed into inclined faces, and the ends, close to the inclined faces, of the pair of upper and lower limiting blocks are higher than the ends, far away from the inclined faces, of the pair of upper and lower limiting blocks; a cuboid-shaped containing groove is formed at one end of the upper end faces of the pair of limiting test frames, which is far away from the upper end faces; the placing groove is internally detachably provided with a test probe module.
Description
Technical Field
The invention relates to the field of integrated circuit packaging test, in particular to a test fixture for an SOP (system on package) component.
Background
SOP (Small Out-Line Package) is a very common form of component. In one of the surface mount packages, leads are led out from both sides of the package in the shape of gull-wing (L-shape). The material can be plastic and ceramic. Beginning at the end of the 70 s.
Since the SOP packages have various sizes and the number and distribution of the pins are different, the application range of the SOP package test fixture is wide, and the existing SOP package test fixture has a complex structure and is difficult to operate, so that the improvement of the production efficiency is not facilitated.
Disclosure of Invention
The invention aims to provide a test fixture for an SOP packaged component, aiming at the technical problems of the existing test fixture for the SOP package that the application range is enlarged, the structure is complex and the operation is difficult.
The technical scheme for solving the technical problems is as follows: a test fixture for SOP packaged components comprises a rectangular frame and a limit test device; a rectangular groove-shaped limiting moving groove is formed in the frame; a cuboid discharge port which penetrates upwards is formed on the upper side wall of the limiting moving groove; the limiting test device comprises a pair of limiting test frames which are symmetrically arranged left and right and a pair of limiting plates which are symmetrically arranged front and back; the pair of limiting test frames and the pair of limiting plates are positioned in the limiting moving grooves; the pair of limiting test frames are arranged in a left-right movement mode and are synchronously far away from or close to each other; the pair of limiting plates are arranged in a front-back movement mode and synchronously far away from or close to each other; the centers of the pair of limiting plates are elastically lifted and provided with L-shaped upper and lower limiting blocks; the lower end faces of the horizontal parts of the pair of upper and lower limiting blocks are formed into inclined faces, and the ends, close to the inclined faces, of the pair of upper and lower limiting blocks are higher than the ends, far away from the inclined faces, of the pair of upper and lower limiting blocks; a cuboid-shaped containing groove is formed in the center of one end, far away from the upper end faces, of the pair of limiting test frames; the test probe module is detachably arranged in the placing groove; a plurality of probes which are uniformly distributed front and back are elastically and telescopically arranged on the end surfaces far away from the pair of test probe modules.
Preferably, the lower side wall of the limit moving groove is formed with an odd number of left and right sliding grooves which are uniformly distributed front and back; a plurality of left and right sliding blocks matched with the left and right sliding grooves are formed on the lower end surface of the limiting test frame; a left driving threaded rod and a right driving threaded rod are pivoted between the left side wall and the right side wall of the left sliding groove and the right sliding groove in the middle; a left driving motor and a right driving motor are fixed on the right side wall of the left sliding groove and the right sliding groove in the middle; the right end of the left and right driving threaded rod is fixed on the output shaft of the left and right driving motor; the left part and the right part of the left and right driving threaded rod are provided with external thread parts with opposite rotation directions; a pair of left and right sliding blocks in the middle are screwed on different external thread parts of the left and right driving threaded rods.
Preferably, a cylindrical left and right guide rod is formed between the left and right side walls of the left and right slide grooves; the left and right guide rods on the corresponding sides are sleeved with the left and right sliding blocks in the left and right directions.
Preferably, a pair of front and rear driving threaded rods which are symmetrically arranged left and right are pivoted between the upper ends of the front and rear side walls of the limiting moving groove; a pair of front and rear driving motors which are arranged symmetrically left and right are fixed on the front side wall of the limiting moving groove; the front end of the front and rear driving threaded rod is fixed on the output shaft of the front and rear driving motor on the corresponding side; the front part and the rear part of the front and rear driving threaded rod are provided with external thread parts with opposite rotation directions; the pair of limiting plates are screwed on different external thread parts of the pair of front and rear driving threaded rods.
Preferably, the pair of front and rear drive threaded rods are located on both left and right sides of the discharge port.
Preferably, a rectangular lifting groove is formed in the middle of the upper end face of the limiting plate; the lifting groove is arranged in a penetrating manner from front to back; a pair of lifting guide columns which are symmetrically arranged front and back are formed on the bottom surface of the lifting groove; a tension spring is sleeved on the lifting guide pillar; the vertical parts of the upper and lower limiting blocks are vertically arranged in the lifting grooves on the corresponding sides in a sliding manner and vertically sleeved on the pair of lifting guide pillars on the corresponding sides; the lower end of the tension spring is fixed on the lower side wall of the lifting groove, and the upper end of the tension spring is fixed on the lower end face of the upper and lower limiting blocks.
Preferably, the end faces, close to the vertical parts, of the pair of upper and lower limiting blocks are flush with the end faces, close to the pair of limiting plates, of the pair of limiting plates respectively.
Preferably, the left and right side walls of the movement-limiting groove are respectively formed with a left and right through-arranged replacement hole for replacing the test probe module on the corresponding side.
Preferably, the front and rear side walls of the placement groove are respectively provided with a spring plunger; and limiting grooves matched with the steel balls of the spring plungers are formed in the front end face and the rear end face of the test probe module respectively.
The invention has the beneficial effects that: the structure is simple, and the SOP package is automatically positioned and tested, so that the SOP package testing device is suitable for SOP packages of different sizes.
Drawings
FIG. 1 is a schematic top view of the present invention;
FIG. 2 is a schematic structural view of a cross section A-A of FIG. 1 according to the present invention.
In the figure, 10, the frame; 100. a discharging port; 101. a limiting moving groove; 102. a displacement well; 103. a left and a right sliding grooves; 104. a left guide bar and a right guide bar; 20. a limit testing device; 21. a left and right driving motor; 22. driving the threaded rod left and right; 23. a limiting test frame; 230. a placing groove; 231. a left and a right sliding block; 24. a test probe module; 241. a probe; 25. driving the threaded rod back and forth; 26. a limiting plate; 260. a lifting groove; 261. a lifting guide post; 27. a tension spring; 28. an upper limit block and a lower limit block.
Detailed Description
As shown in fig. 1 and fig. 2, a test fixture for SOP packaged components includes a rectangular frame 10 and a limit test device 20; a rectangular groove-shaped limiting moving groove 101 is formed in the frame 10; a cuboid discharge port 100 which penetrates upwards is formed on the upper side wall of the limiting moving groove 101; the limit test device 20 comprises a pair of limit test frames 23 which are symmetrically arranged left and right and a pair of limit plates 26 which are symmetrically arranged front and back; the pair of limit test frames 23 and the pair of limit plates 26 are positioned in the limit moving groove 101; the pair of limiting test frames 23 are arranged left and right and synchronously far away from or close to each other; a pair of limit plates 26 are arranged to move back and forth and synchronously move away from or close to each other; the centers of the pair of limiting plates 26 are elastically provided with L-shaped upper and lower limiting blocks 28 in a lifting way; the lower end faces of the horizontal parts of the pair of upper and lower limit blocks 28 are formed into inclined faces, and the ends, close to the inclined faces, of the pair of upper and lower limit blocks 28 are higher than the ends, far away from the inclined faces; a rectangular placing groove 230 is formed in the center of one end, far away from the upper end faces, of the pair of limiting test frames 23; the test probe module 24 is detachably mounted in the mounting groove 230; the end surfaces of the pair of test probe modules 24 away from each other are elastically and telescopically provided with a plurality of probes 241 uniformly distributed in the front and back directions.
As shown in fig. 1 and 2, an odd number of left and right sliding grooves 103 are formed on the lower side wall of the limiting moving groove 101 and are uniformly distributed in the front and back direction; a plurality of left and right sliding blocks 231 matched with the left and right sliding grooves 103 are formed on the lower end surface of the limiting test frame 23; a left driving threaded rod 22 and a right driving threaded rod 22 are pivoted between the left side wall and the right side wall of the left sliding groove 103 and the right sliding groove 103 in the middle; a left driving motor 21 and a right driving motor 21 are fixed on the right side wall of the left sliding groove 103 and the right sliding groove 103 in the middle; the right end of the left and right driving threaded rod 22 is fixed on the output shaft of the left and right driving motor 21; the left and right portions of the left and right driving threaded rod 22 are formed with external threaded portions having opposite rotation directions; a pair of left and right sliding blocks 231 in the middle are screwed on different male screw portions of the left and right drive threaded rods 22.
As shown in fig. 1, a cylindrical left and right guide bar 104 is formed between left and right side walls of the remaining left and right slide grooves 103; the left and right slide blocks 231 are fitted over the left and right guide rods 104 on the respective sides in the left-right direction.
As shown in fig. 1, a pair of front and rear driving threaded rods 25 symmetrically arranged left and right are pivoted between the upper ends of the front and rear side walls of the limiting moving groove 101; a pair of front and rear driving motors which are arranged in bilateral symmetry are fixed on the front side wall of the limiting moving groove 101; the front end of the front and rear driving threaded rod 25 is fixed on the output shaft of the front and rear driving motor on the corresponding side; the front and rear portions of the forward and rearward driving threaded rod 25 are formed with male screw portions having opposite directions of rotation; a pair of stopper plates 26 are screwed to different male screw portions of the pair of forward and backward driving screw rods 25.
As shown in fig. 1, a pair of forward and backward driving threaded rods 25 are positioned on both left and right sides of the discharge opening 100.
As shown in fig. 1, a rectangular lifting groove 260 is formed in the middle of the upper end surface of the limiting plate 26; the lifting groove 260 is arranged in a front-back penetrating manner; a pair of lifting guide posts 261 symmetrically arranged front and back are formed on the bottom surface of the lifting groove 260; the tension spring 27 is sleeved on the lifting guide pillar 261; the vertical parts of the upper and lower limit blocks 28 are vertically arranged in the lifting grooves 260 of the corresponding sides in a sliding manner and vertically sleeved on the pair of lifting guide columns 261 of the corresponding sides; the lower end of the tension spring 27 is fixed on the lower side wall of the lifting groove 260, and the upper end is fixed on the lower end surface of the upper and lower limiting blocks 28.
The end faces of the pair of upper and lower stoppers 28 adjacent to the vertical portions are flush with the end faces of the pair of stopper plates 26 adjacent to each other.
As shown in fig. 1 and 2, the left and right side walls of the movement-restricting groove 101 are formed with left and right insertion holes 102, respectively, and the insertion holes 102 are used to insert the corresponding test probe modules 24.
Spring plungers are respectively installed on the front and rear side walls of the installation groove 230; and limiting grooves matched with steel balls of the spring plungers are formed in the front end face and the rear end face of the test probe module 24 respectively.
A theory of operation for SOP encapsulates test fixture of components and parts:
initial state: the pair of limiting test frames 23 are closest to each other, and the pair of limiting plates 26 are farthest from each other;
during testing, the SOP package is placed on the pair of limiting test frames 23 through the discharging hole 100, then the pair of limiting plates 26 are relatively close to each other, finally the SOP package is limited by the pair of upper and lower limiting blocks 28 in the vertical direction and centered in the front-rear direction, then the pair of limiting test frames 23 are far away from each other, finally the pair of test probe modules 24 abut against pins on the corresponding sides, and the probes 241 are in contact with the pins on the corresponding sides, so that the SOP package is centered in the left-right direction and tested, and the SOP package is automatically positioned and tested in the process and is suitable for SOP packages with different sizes;
since the number and distribution of the pins of the SOP package are different, test probe modules 24 with different pertinence are required, and only the old test probe module 24 needs to be pulled out from the replacement hole 102 on the corresponding side and then inserted into the new test probe module 24 when replacing.
The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description herein, since various changes and modifications can be made in the details of the embodiment and the application range according to the spirit of the present invention.
Claims (9)
1. The utility model provides a test fixture for SOP encapsulates components and parts which characterized in that: comprises a cuboid frame (10) and a limit testing device (20); a cuboid groove-shaped limiting moving groove (101) is formed in the frame (10); a cuboid discharge port (100) which penetrates upwards is formed on the upper side wall of the limiting moving groove (101); the limiting test device (20) comprises a pair of limiting test frames (23) which are symmetrically arranged left and right and a pair of limiting plates (26) which are symmetrically arranged front and back; the pair of limiting test frames (23) and the pair of limiting plates (26) are positioned in the limiting moving groove (101); the pair of limiting test racks (23) are arranged left and right and synchronously far away from or close to each other; a pair of limiting plates (26) are arranged back and forth and synchronously far away from or close to each other; the centers of the pair of limiting plates (26) are elastically lifted and arranged with L-shaped upper and lower limiting blocks (28); the lower end faces of the horizontal parts of the pair of upper and lower limiting blocks (28) are formed into inclined faces, and the ends, close to the inclined faces, of the pair of upper and lower limiting blocks (28) are higher than the ends, far away from the inclined faces; a cuboid-shaped containing groove (230) is formed in the center of one end, far away from the upper end faces, of the pair of limiting test frames (23); the test probe module (24) is detachably arranged in the placing groove (230); a plurality of probes (241) which are uniformly distributed front and back are elastically and telescopically arranged on the end surfaces of the pair of test probe modules (24) far away;
initial state: the pair of limiting test frames (23) are closest to each other, and the pair of limiting plates (26) are farthest from each other; during the test, the SOP encapsulation is placed on a pair of spacing test jig (23) through drain hole (100), then a pair of limiting plate (26) is close to relatively, and final SOP encapsulation is restricted and is centered on the front and back direction by a pair of stopper (28) about in the vertical direction, then a pair of spacing test jig (23) is kept away from, and final a pair of test probe module (24) support to lean on the pin of corresponding side and probe (241) contact with the pin of corresponding side simultaneously, and the SOP encapsulation is centered and is tested on left and right direction like this.
2. The test fixture for the SOP packaged component as claimed in claim 1, wherein: an odd number of left and right sliding grooves (103) which are uniformly distributed front and back are formed on the lower side wall of the limiting moving groove (101); a plurality of left and right sliding blocks (231) matched with the left and right sliding grooves (103) are formed on the lower end surface of the limiting test frame (23); a left driving threaded rod (22) and a right driving threaded rod (22) are pivoted between the left side wall and the right side wall of the left sliding groove (103) and the right sliding groove (103) in the middle; a left driving motor (21) and a right driving motor (21) are fixed on the right side wall of the left sliding groove and the right sliding groove (103) in the middle part; the right end of the left and right driving threaded rod (22) is fixed on the output shaft of the left and right driving motor (21); the left part and the right part of the left-right driving threaded rod (22) are provided with external thread parts with opposite rotation directions; a pair of left and right sliding blocks (231) at the middle part are screwed on different external thread parts of the left and right driving threaded rods (22).
3. The test fixture for the SOP packaged component as claimed in claim 2, wherein: a cylindrical left guide rod (104) and a cylindrical right guide rod (104) are formed between the left side wall and the right side wall of the other left sliding groove (103); the left and right sliding blocks (231) are sleeved on the left and right guide rods (104) on the corresponding sides in the left and right directions.
4. The test fixture for the SOP packaged component as claimed in claim 1, wherein: a pair of front and rear driving threaded rods (25) which are symmetrically arranged at the left and right are pivoted between the upper ends of the front and rear side walls of the limiting moving groove (101); a pair of front and rear driving motors which are arranged in bilateral symmetry are fixed on the front side wall of the limiting moving groove (101); the front end of the front and back driving threaded rod (25) is fixed on the output shaft of the front and back driving motor on the corresponding side; the front part and the rear part of the front and rear driving threaded rod (25) are provided with external threaded parts with opposite rotation directions; a pair of stopper plates (26) are screwed to different male screw portions of the pair of forward and backward driving screw rods (25).
5. The test fixture for the SOP packaged component as claimed in claim 4, wherein: the pair of front and rear driving threaded rods (25) are positioned on the left and right sides of the discharge opening (100).
6. The test fixture for the SOP packaged component as claimed in claim 1, wherein: a rectangular lifting groove (260) is formed in the middle of the upper end face of the limiting plate (26); the lifting groove (260) is arranged in a penetrating way from front to back; a pair of lifting guide columns (261) which are symmetrically arranged in front and back are formed on the bottom surface of the lifting groove (260); a tension spring (27) is sleeved on the lifting guide pillar (261); the vertical parts of the upper and lower limiting blocks (28) are vertically arranged in the lifting grooves (260) on the corresponding sides in a sliding manner and vertically sleeved on a pair of lifting guide columns (261) on the corresponding sides; the lower end of the tension spring (27) is fixed on the lower side wall of the lifting groove (260), and the upper end is fixed on the lower end surface of the upper and lower limiting blocks (28).
7. The test fixture for the SOP packaged component as claimed in claim 6, wherein: the end surfaces of the vertical parts of the pair of upper and lower limiting blocks (28) close to are respectively flush with the end surfaces of the pair of limiting plates (26) close to.
8. The test fixture for the SOP packaged component as claimed in claim 1, wherein: replacement holes (102) which penetrate through the left side and the right side of the limiting moving groove (101) are formed in the left side wall and the right side wall of the limiting moving groove respectively, and the replacement holes (102) are used for replacing the test probe modules (24) on the corresponding sides.
9. The test fixture for the SOP packaged component as claimed in claim 1, wherein: spring plungers are respectively arranged on the front side wall and the rear side wall of the placing groove (230); and limiting grooves matched with steel balls of the spring plungers are formed in the front end face and the rear end face of the test probe module (24) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911110331.XA CN110824342B (en) | 2019-11-14 | 2019-11-14 | A test fixture for SOP encapsulation components and parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911110331.XA CN110824342B (en) | 2019-11-14 | 2019-11-14 | A test fixture for SOP encapsulation components and parts |
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| Publication Number | Publication Date |
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| CN110824342A CN110824342A (en) | 2020-02-21 |
| CN110824342B true CN110824342B (en) | 2021-08-06 |
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| CN201911110331.XA Active CN110824342B (en) | 2019-11-14 | 2019-11-14 | A test fixture for SOP encapsulation components and parts |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113917316A (en) * | 2021-10-14 | 2022-01-11 | 池州华宇电子科技股份有限公司 | High-precision chip testing jig |
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|---|---|---|---|---|
| CN204374328U (en) * | 2014-12-31 | 2015-06-03 | 绵阳宁瑞电子有限公司 | A kind of DIP encapsulates component testing device |
| CN105334444A (en) * | 2015-11-14 | 2016-02-17 | 苏州光韵达光电科技有限公司 | Detection system of BGA chip |
| CN110045161A (en) * | 2019-05-24 | 2019-07-23 | 杭州易正科技有限公司 | A kind of test bench of BGA package |
| CN209296778U (en) * | 2018-11-15 | 2019-08-23 | 南京思维斯精密机械制造有限公司 | Chip testboard |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI582874B (en) * | 2012-05-03 | 2017-05-11 | Chroma Ate Inc | A test system for testing semiconductor packaged stacked wafers, and a semiconductor automated test machine |
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- 2019-11-14 CN CN201911110331.XA patent/CN110824342B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204374328U (en) * | 2014-12-31 | 2015-06-03 | 绵阳宁瑞电子有限公司 | A kind of DIP encapsulates component testing device |
| CN105334444A (en) * | 2015-11-14 | 2016-02-17 | 苏州光韵达光电科技有限公司 | Detection system of BGA chip |
| CN209296778U (en) * | 2018-11-15 | 2019-08-23 | 南京思维斯精密机械制造有限公司 | Chip testboard |
| CN110045161A (en) * | 2019-05-24 | 2019-07-23 | 杭州易正科技有限公司 | A kind of test bench of BGA package |
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