CN212781103U

CN212781103U - Efficient detection jig for PCB

Info

Publication number: CN212781103U
Application number: CN202021350932.6U
Authority: CN
Inventors: 刘建军
Original assignee: Quanchengxin Electronics Shenzhen Co ltd
Current assignee: Trustech Electronics Co.,Ltd.
Priority date: 2020-07-10
Filing date: 2020-07-10
Publication date: 2021-03-23
Anticipated expiration: 2030-07-10

Abstract

The utility model provides a high-efficient detection tool of PCB board, including last tool, lower tool, probe and counterpoint round pin, go up tool and lower tool and constitute by multilayer panel and set up a plurality of probe holes that run through panel; during detection, the PCB is arranged between the upper jig and the lower jig, the alignment pins are aligned, the probes penetrate through the probe holes and are in contact with detection positions on the PCB, and electric signals are generated and transmitted to external equipment connected with the probes; through tool and alignment pin about setting up, realize the stable and accurate detection to the PCB board to be provided with the fixed stay in the intensive position of probe hole, the stable in structure of tool about guaranteeing.

Description

Efficient detection jig for PCB

Technical Field

The utility model relates to a PCB detects technical field, especially relates to a high-efficient detection tool of PCB board.

Background

The PCB is called as a Printed Circuit Board, means a Printed Circuit Board, is an important electronic component, is also a support body of the electronic component, and is mainly manufactured by electronic printing; in the detection process of the PCB, the traditional jig is generally unstable in structure, so that high false detection rate is easily generated in the production test process, and repeated test is caused; meanwhile, the cost of manpower and material resources is influenced, and the pin marks of the PCB subjected to repeated testing are too deep in the repeated testing process, so that the appearance of the PCB is influenced; the PCB is damaged, and loss is brought to enterprises;

the existing PCB detection jig has the characteristics of low layer number and unstable structure, and when the PCB detection jig is used for detection, the jig is easy to shake due to excessive probes and large slope, and finally the test is inaccurate, so that a high-precision PCB detection jig is urgently needed to solve the problems.

SUMMERY OF THE UTILITY MODEL

To the weak point that exists among the above-mentioned technique, the utility model provides a high-efficient detection tool of PCB board can effectively prevent the off normal through tool about the counterpoint round pin that sets up makes when detecting to and through the structure that sets up the firm tool of stationary prop in intensive region.

In order to achieve the purpose, the utility model provides a high-efficiency detection jig for a PCB, which comprises an upper jig, a lower jig, a probe and an alignment pin, wherein the upper jig and the lower jig are both composed of multilayer plates and are provided with a plurality of probe holes penetrating through the plates; during detection, the PCB is arranged between the upper jig and the lower jig and is aligned through the alignment pin, the probe penetrates through the probe hole and is in contact with a detection part on the PCB, and an electric signal is generated and transmitted to external equipment connected with the probe.

Preferably, the method comprises the following steps: the upper jig and the lower jig respectively comprise a top plate, a bottom plate and an intermediate plate, the top plate and the bottom plate are fixedly connected through peripheral copper columns, and the intermediate plate is arranged between the top plate and the bottom plate at a fixed interval.

Preferably, the method comprises the following steps: the middle plate further comprises a first plate respectively in close contact with the top plate and the bottom plate.

Preferably, the method comprises the following steps: the copper column is locked and fixed on the top plate and the bottom plate through the copper column screws.

Preferably, the method comprises the following steps: and isolation rings are arranged between every two layers of intermediate plates of the intermediate plates, and are sleeved on the peripheral copper columns to separate the intermediate plates according to the heights of the isolation rings.

Preferably, the method comprises the following steps: the upper jig and the lower jig are also provided with a support post hole and a fixed support post which penetrate through the plate, and the fixed support post penetrates through the support post hole and is abutted against the wall of the support post hole, so that a structure for stabilizing the upper jig and the lower jig is formed.

Preferably, the method comprises the following steps: the upper jig and the lower jig are also provided with jig aligning holes, and when the PCB is detected and installed, the aligning holes of the upper jig and the aligning holes of the lower jig are in opposite positions and are connected and aligned through the aligning pins.

Preferably, the method comprises the following steps: the support post hole and the fixed support post are arranged at the position where the probe holes of the upper jig and the probe holes of the lower jig are dense.

The utility model has the advantages that: compared with the prior art, the utility model provides a high-efficient detection tool of PCB board, including upper tool, lower tool, probe and counterpoint round pin, upper tool and lower tool are constituteed by multilayer panel and set up a plurality of probe holes that run through panel; during detection, the PCB is arranged between the upper jig and the lower jig, the alignment pins are aligned, the probes penetrate through the probe holes and are in contact with detection positions on the PCB, and electric signals are generated and transmitted to external equipment connected with the probes; through tool and alignment pin about setting up, realize the stable and accurate detection to the PCB board to be provided with the fixed stay in the intensive position of probe hole, the stable in structure of tool about guaranteeing.

Drawings

Fig. 1 is a three-dimensional view of the present invention;

FIG. 2 is a schematic view of the hole site of the present invention;

fig. 3 is a top view of the present invention;

fig. 4 is a structural diagram of one of the jig plates of the present invention.

The main element symbols are as follows:

1. mounting a jig; 2. a lower jig; 3. a top plate; 4. a base plate; 5. a middle plate; 51. a first layer plate; 6. an isolating ring; 7. a peripheral copper pillar; 8. a strut hole; 9. aligning holes; 10. copper post screw.

Detailed Description

In order to make the present invention clearer, the present invention will be further described with reference to the accompanying drawings.

In the detection process of the PCB, the traditional jig is generally unstable in structure, so that high false detection rate is easily generated in the production test process, and repeated test is caused; meanwhile, the cost of manpower and material resources is influenced, and the pin marks of the PCB subjected to repeated testing are too deep in the repeated testing process, so that the appearance of the PCB is influenced; the PCB is damaged, and loss is brought to enterprises; the existing PCB detection jig has the characteristics of low layer number and unstable structure, and when the PCB detection jig is used for detection, the jig is easy to shake due to excessive probes and large slope, and finally the test is inaccurate, so that a high-precision PCB detection jig is urgently needed to solve the problems.

Specifically, the utility model provides a high-efficient detection tool of PCB board please refer to fig. 1-4, and this tool includes: the device comprises an upper jig 1, a lower jig 2, probes and alignment pins, wherein the upper jig 1 and the lower jig 2 are both composed of multilayer plates and are provided with a plurality of probe holes penetrating through the plates; during detection, the PCB is arranged between the upper jig 1 and the lower jig 2, the alignment pins are aligned, the probes penetrate through the probe holes and are in contact with detection positions on the PCB, and electric signals are generated and transmitted to external equipment connected with the probes; wherein, the copper columns are fixed on the hole sites of the copper columns in the test area of 82.6X 5.0mm peripheral copper columns 7 and 82.6X 5.0mm PCB arranged in the plate, simultaneously, the

plates

470, 390, 1.0mm, B2, 470, 390, 1.0mm, B3, 470, 390, 1.0mm, B4, 470, 390, 1.0mm, B5, 470, 390, 1.0mm, B6, 470, 390, 1.0mm, B7, 470, 390, 1.0mm, B8, 470, 390, 1.0mm, B9, 470, 390, 1.0mm, B10, 470, 1.0mm, B11, 470, 390, 1.0mm, B12, 470, 390, B63390, 470, 390, B390, 470, 6, 470, 390, 6, 470, 390, B, 470, 390, 6, 470, 390, 470, 8, 470, 390, 8, 470, 8, 390, 5, 8, 390, 5, 8, 0, 5, 8, 0, 8; the 17-layer jig framework can solve the problem that a composite jig needs to be set up when the slope of a traditional jig framework is too large and most of laminates exceed 450 mils; go up tool 1 and lower tool 2 and all include roof 3, bottom plate 4 and intermediate lamella 5, and roof 3 and bottom plate 4 pass through peripheral copper post 7 fixed connection, and intermediate lamella 5 sets up between roof 3 and bottom plate 4 according to the fixed spacing.

One embodiment mentions: the jig plates are all FR-4 epoxy plates, and the specification is 470 mm by 390 mm; 6mil test probes, gauge 0.15 x 0.6 x 95.25 mm; 2.0mm and 5.0mm metal struts, the length of the struts is 83 mm; 8.0mm upper and lower tool 2 alignment pin, its specification 8 x 88.5 mm.

One embodiment mentions: the intermediate plate 5 further comprises a first layer plate 51 which is in close contact with the top plate 3 and the bottom plate 4, respectively; the zero distance close contact of the top plate 51 with the top plate 3 and the bottom plate 4 aims to reduce the gap between the probe and the top plate 3 and the bottom plate 4 and prevent the probe from shaking with the top plate 3 and the bottom plate 4.

One embodiment mentions: the copper column locking device further comprises copper column screws 10, and the peripheral copper columns 7 are locked and fixed on the top plate 3 and the bottom plate 4 through the copper column screws 10.

One embodiment mentions: an isolation ring 6 is arranged between each layer of the intermediate plate 5, the isolation ring 6 is sleeved on the peripheral copper column 7, and the intermediate plates 5 are separated according to the height of the isolation ring 6; the isolating rings 6 are made of plastic steel and have the specification of 5.0 × 15 × 5.4 mm.

One embodiment mentions: the upper jig 1 and the lower jig 2 are also provided with a support post hole 8 and a fixed support post which penetrate through the plate, and the fixed support post penetrates through the support post hole 8 and is abutted against the hole wall of the support post hole 8, so that a structure for stabilizing the upper jig 1 and the lower jig 2 is formed; the fixing support columns comprise 2.0mm fixing support columns and 5.0mm fixing support columns, and can play a stable supporting role in a dense area of the PCB test probes.

One embodiment mentions: the upper jig 1 and the lower jig 2 are also provided with jig aligning holes 9, and when the PCB is detected and installed, the aligning holes 9 of the upper jig 1 and the aligning holes 9 of the lower jig 2 are in opposite positions and are connected and aligned through aligning pins; this alignment round pin is tool 2 alignment round pin about 8.0mm, makes the location more accurate between the every layer of tool, and tool 2 can effectively prevent the off normal in the test procedure about simultaneously.

One embodiment mentions: the support post holes 8 and the fixed support posts are arranged at the dense positions of the probe holes of the upper jig 1 and the lower jig 2.

One embodiment mentions: PAD in the PCB is less than 18mil and all dense areas (such as BGA, IC and other positions) are provided with 6mil test needle types, and test PAD larger than 18mil are all provided with 12mil test needle types; this 6mil test needle type and 12mil test needle type can reduce the test probe slope through combining with 17 layers of tool framework, make its contact PCB board test point that can be more accurate in the test process, reduce the test misdetection rate, promote efficiency of software testing.

The following detailed description is made in conjunction with the practical embodiments of the present invention: the efficient detection jig for manufacturing the PCB is characterized in that an OP (operational amplifier) is used for providing PCB client originals and PCB production data provided by a CAM (computer-aided manufacturing), each line is analyzed according to an electrical principle, a pin is arranged, and a KIT (KIT) file of a newly-developed novel jig framework is used for manufacturing a corresponding efficient detection jig program of the novel PCB; drilling out all 34 layers of plates from the corresponding plates by a drilling machine according to the drilling data; taking the B1\ T1 layer and the B17\ T17 layer to perform counter bore processing on all copper pillar screw holes, jig alignment holes 9 and PCB alignment holes 9, checking whether the depth is proper, and then sequencing and assembling (as shown in figure 4). Firstly, taking the B1\ T1 layer, and arranging all copper pillar bolts 10 on all copper pillar holes; then taking B2\ T2 layers, and correspondingly stacking the layers according to the corresponding directions; placing a 5.0mm isolating ring 6 on each copper column stably, checking whether the copper columns are flat or not, taking B3\ T3 layers, and correspondingly stacking the layers in the corresponding direction; b4\ T4, B5\ T5, B6\ T6, B7\ T7, B8\ T8, B9\ T9, B10\ T10, B11\ T11, B12\ T12, B13\ T13 and B14\ T14 are installed and stacked in the way; inserting a metal strut with the size of 2.0mm and a metal strut with the size of 5.0mm into 8 positions of each strut hole, checking, stably placing a 5.0mm isolating ring 6 on each copper strut, checking whether the copper strut is flat or not, taking B15\ T15 layers, fixing sponge cloth on the reverse sides of the B15\ T15 layers, and correspondingly stacking the fixed sponge cloth in the corresponding direction; a 5.0mm isolating ring 6 is stably placed on each copper column, and B16\ T16 layers are correspondingly overlapped in the corresponding direction; correspondingly stacking the B17\ T17 layers in the corresponding directions; after four positioning rods are used for carrying out positioning inspection on four angular positions of the jig, all bolts of corresponding copper column hole positions are locked and inspected, and aligning pins of upper and lower jigs 2 with the diameter of 8.0mm are arranged at four corners of the jig, so that each layer of jig is aligned and the alignment between the upper and lower jigs 2 is facilitated; and after the assembly is finished, inserting pins according to the sequence of the probes from large to small, namely the jig is finished.

The utility model has the advantages that:

1. the utility model discloses a structure of tool each 17 layers of panel about setting up, through the accurate counterpoint of counterpoint round pin, guarantee that the tool detects steadiness and precision of time measuring.

2. Through set up fixed pillar in the intensive region of probe, guarantee to avoid taking place to rock and slope when probe density is too big.

The above disclosure is only for the specific embodiments of the present invention, but the present invention is not limited thereto, and any changes that can be made by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. The utility model provides a high-efficient detection tool of PCB board which characterized in that: the probe positioning device comprises an upper jig, a lower jig, probes and alignment pins, wherein the upper jig and the lower jig are both composed of multilayer plates and are provided with a plurality of probe holes penetrating through the plates; during detection, the PCB is arranged between the upper jig and the lower jig and is aligned through the alignment pin, the probe penetrates through the probe hole and is in contact with a detection part on the PCB, and an electric signal is generated and transmitted to external equipment connected with the probe.

2. The efficient detection tool of the PCB of claim 1, wherein: the upper jig and the lower jig respectively comprise a top plate, a bottom plate and an intermediate plate, the top plate and the bottom plate are fixedly connected through peripheral copper columns, and the intermediate plate is arranged between the top plate and the bottom plate at a fixed interval.

3. The efficient detection tool of the PCB of claim 2, wherein: the middle plate further comprises a first plate respectively in close contact with the top plate and the bottom plate.

4. The efficient detection tool of the PCB of claim 2, wherein: the copper column is locked and fixed on the top plate and the bottom plate through the copper column screws.

5. The efficient detection tool of the PCB of claim 2, wherein: and isolation rings are arranged between every two layers of intermediate plates of the intermediate plates, and are sleeved on the peripheral copper columns to separate the intermediate plates according to the heights of the isolation rings.

6. The efficient detection tool of the PCB of claim 1, wherein: the upper jig and the lower jig are also provided with a support post hole and a fixed support post which penetrate through the plate, and the fixed support post penetrates through the support post hole and is abutted against the wall of the support post hole, so that a structure for stabilizing the upper jig and the lower jig is formed.

7. The efficient detection tool of the PCB of claim 1, wherein: the upper jig and the lower jig are also provided with jig aligning holes, and when the PCB is detected and installed, the aligning holes of the upper jig and the aligning holes of the lower jig are in opposite positions and are connected and aligned through the aligning pins.

8. The efficient detection tool of the PCB of claim 6, wherein: the support post hole and the fixed support post are arranged at the position where the probe holes of the upper jig and the probe holes of the lower jig are dense.