CN108012426A - A kind of quality retroactive method of multi-layer PCB - Google Patents
A kind of quality retroactive method of multi-layer PCB Download PDFInfo
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- CN108012426A CN108012426A CN201711329983.3A CN201711329983A CN108012426A CN 108012426 A CN108012426 A CN 108012426A CN 201711329983 A CN201711329983 A CN 201711329983A CN 108012426 A CN108012426 A CN 108012426A
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- parity check
- vertical parity
- check code
- quick response
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0266—Marks, test patterns or identification means
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/09—Shape and layout
- H05K2201/09818—Shape or layout details not covered by a single group of H05K2201/09009 - H05K2201/09809
- H05K2201/09927—Machine readable code, e.g. bar code
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- General Factory Administration (AREA)
- Structure Of Printed Boards (AREA)
Abstract
The present invention relates to PCB fields, a kind of quality retroactive method of multi-layer PCB is disclosed, including：It is that every core plate distributes a unique Quick Response Code in sawing sheet process, is drilled with after which is converted to unique hole horizontal and vertical parity check code on corresponding core plate；In pressing working procedure, the hole horizontal and vertical parity check code on every core plate is read, merges for read all well horizontal and vertical parity check code and generates corresponding unique Quick Response Code, then is drilled with after the Quick Response Code is converted to unique hole horizontal and vertical parity check code on the multi-layer board that pressing is formed；After welding resistance process, the hole horizontal and vertical parity check code on multi-layer board is read, stamp is on multi-layer board after horizontal and vertical parity check code is converted to corresponding Quick Response Code by the hole.The embodiment of the present invention is in the manufacture craft of multi-layer PCB, it is ensured that retrospect mark is accurately identified in each process, to realize that the full-range character surveillance of product is laid a good foundation；Transfer of the internal layer information to outer layer is realized in pressing working procedure, it is therefore prevented that the loss of internal layer information is, it can be achieved that product lifecycle traces.
Description
Technical field
The present invention relates to PCB (Printed Circuit Board, printed wiring board) technical field, more particularly to one kind
The quality retroactive method of multi-layer PCB.
Background technology
The retrospect of the reason for product problem is the severe challenge that the manufacturer of each industry all suffers from, from automobile making row
Industry is to aerospace industry, from medical treatment to food service industry, invariably so.In the epoch of a globalization, relation management is pursued by enterprise,
To realize the maximization of CSAT.Consumption and environmental legislation are more and more stringenter, therefore trackability just becomes more to be necessary.
Whenever manufacturer all pursues production capacity than ever maximizes, and it is desirable that reduces cost.In order to realize this
Target, it is necessary to monitor each process in whole manufacturing process, and preserve complete historical record.Quickly it must identify and entangle
The problem of active influence product quality, prevent defective product from continuing to be to try to reality along production line flow down, its final goal
Existing zero product return of goods rate.In electronics industry, the production of PCB also needs to meet requirement of the client to retrospective, is finding to ask
During topic, client wishes can be with quick positioning question reason and impacted product scope.
At present, the typical process flow of multi-layer PCB is：Sawing sheet->Internal layer circuit->Internal layer AOI (Automatic
Optic Inspection, automatic optics inspection)->Pressing->Drilling->Heavy copper plating->Outer-layer circuit->Outer layer
AOI—>Welding resistance->Word->Surface treatment->Shaping->Electrical measurement->FQC/FQA—>Packaging.In order to realize that quality traces,
In whole production process, PCB factories are generally directly being sprayed at plate face by the use of Quick Response Code as information carrier, in each process
Read 2 D code information by scanner and new machining information is added into the Quick Response Code.But this made with Quick Response Code
There are following defect for the mode identified for retrospect：
1) in pressing working procedure, because None- identified internal layer Quick Response Code causes internal layer information to be lost；
2) in multiple processes, such as internal layer circuit makes, heavy copper is electroplated, outer graphics make and welding resistance process, two dimension
Code is easy to capped or erodes, and has seriously affected the identification of Quick Response Code.
The content of the invention
It is an object of the invention to provide a kind of quality retroactive method of multi-layer PCB, overcomes in the prior art using two dimension
The defects of code data existing as retrospect mark are easy to be lost and identify easily by harmful effect.
For this purpose, the present invention uses following technical scheme：
A kind of quality retroactive method of multi-layer PCB, including：
In sawing sheet process, it is that every core plate distributes a unique Quick Response Code, which is converted into unique Kong Zhen
It is drilled with after code on corresponding core plate；
In pressing working procedure, the hole horizontal and vertical parity check code on every core plate is read, it is corresponding to merge generation for read all well horizontal and vertical parity check code
Unique Quick Response Code, then be drilled with after the Quick Response Code is converted to unique hole horizontal and vertical parity check code on the multi-layer board that pressing is formed；
After welding resistance process, the hole horizontal and vertical parity check code on the multi-layer board is read, horizontal and vertical parity check code is converted to corresponding Quick Response Code by the hole
Stamp is on multi-layer board afterwards.
Optionally, the method further includes：
In server end, corresponding entry is created for each Quick Response Code；
The core plate/multi-layer board pass through whole PCB production processes in any process equipment when, read the core plate/
Hole horizontal and vertical parity check code or Quick Response Code on multi-layer board, current production relevant information is synchronized in the corresponding record item of server end.
Optionally, the production relevant information includes：Factory's title, process title, process name, production item number, production
Batch number, operator's name, production line are other, title/supplier/lot number of production time, raw material, detection data, production ginseng
Any one or any multinomial combination in number.
Optionally, in the sawing sheet process of the quality retroactive method, it is drilled with every core plate before the horizontal and vertical parity check code of hole, according to it
The default level that stacks specifies different hole horizontal and vertical parity check codes to be drilled with region for every core plate.
Optionally, the method for the hole horizontal and vertical parity check code read in pressing working procedure on every core plate is：In multiple core plates according to pre-
If after order lamination, the hole horizontal and vertical parity check code on every core plate is read by X-Ray.
Optionally, in the quality retroactive method, in sawing sheet process, internal layer circuit production process, internal layer AOI processes, brill
Hole process, any of copper electroplating work procedure, outer-layer circuit production process, outer layer AOI processes, welding resistance process and text printout process of sinking
In one or more kinds of processes, the hole horizontal and vertical parity check code on every core plate or multi-layer board is read by visual identity method.
Optionally, the mode for hole horizontal and vertical parity check code being drilled with the core plate or multi-layer board is：According to the Kong Zhen of the hole horizontal and vertical parity check code
Specified region holes drilled through of the information in edges of boards.
Optionally, the mode for hole horizontal and vertical parity check code being drilled with the core plate or multi-layer board is：According to the Kong Zhen of the hole horizontal and vertical parity check code
Specified region drilling blind hole of the information in edges of boards.
Optionally, in the quality retroactive method, after being baked after welding resistance development or after text printout, the multilayer is read
Hole horizontal and vertical parity check code on plate, stamp is on multi-layer board after by the hole, horizontal and vertical parity check code is converted to corresponding Quick Response Code.
Optionally, in the quality retroactive method, stamp is in multi-layer board after hole horizontal and vertical parity check code is converted to corresponding Quick Response Code
After upper, Quick Response Code is identified by scanner.
Compared with prior art, the embodiment of the present invention has the advantages that：
1) Quick Response Code is first converted to hole horizontal and vertical parity check code and is formed at plate face by the embodiment of the present invention in the manufacture craft of multi-layer PCB
On, after dysgenic factor is produced to Quick Response Code and is disappeared, then hole horizontal and vertical parity check code is converted into Quick Response Code and is formed in plate face, can had
Effect ensures to accurately identify retrospect mark in each process, to realize that the full-range character surveillance of product is laid a good foundation；
2) in pressing working procedure corresponding unique two dimension is generated using first the hole horizontal and vertical parity check code on multiple core materials is merged
Code, then the Quick Response Code is converted into the mode that hole horizontal and vertical parity check code is formed at outer layer, realize transfer of the internal layer information to outer layer, it is therefore prevented that
The loss of internal layer information is, it can be achieved that product lifecycle retrospect, meets the increasingly stringenter quality requirement of in the market.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is attached drawing needed in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without creative efforts, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the quality retroactive method flow chart of multi-layer PCB provided in an embodiment of the present invention.
Embodiment
Goal of the invention, feature, advantage to enable the present invention is more obvious and understandable, below in conjunction with the present invention
Attached drawing in embodiment, is clearly and completely described the technical solution in the embodiment of the present invention, it is clear that disclosed below
Embodiment be only part of the embodiment of the present invention, and not all embodiment.Based on the embodiments of the present invention, this area
All other embodiment that those of ordinary skill is obtained without making creative work, belongs to protection of the present invention
Scope.
The present invention core concept be：For Quick Response Code stream is made in the defects of some processes, whole in multi-layer PCB
Cheng Zhong, first generates corresponding Quick Response Code for every core plate, Quick Response Code is converted to hole horizontal and vertical parity check code into welding resistance process in sawing sheet process
It is formed in plate face, hole horizontal and vertical parity check code is converted to Quick Response Code again after text printout process is entered is formed in plate face so that retrospect
Identify readily identified and read, the integrality of guaranteed quality data.
Further illustrate technical scheme below with reference to the accompanying drawings and specific embodiments.
Referring to Fig. 1, present embodiments providing a kind of quality retroactive method of multi-layer PCB, comprise the following steps：
Step 101, in sawing sheet process, be that every core plate distributes a unique Quick Response Code, which be converted to
It is drilled with after the horizontal and vertical parity check code of unique hole on corresponding core plate.Meanwhile the entry corresponding to the Quick Response Code is created in server end, it incite somebody to action this
The production relevant information that process is related to is synchronized in the corresponding record item of server end.
Quick Response Code, is combined with computer, the information discriminating technology that three kinds of technologies of communication and photoelectric sensing grow up.It
It is that black and white position in the graphic is corresponding " 1 " and " 0 " respectively, so as to form one by certain regularly arranged black and white geometric figure
A binary-coded character sequence, the binary-coded character can represent the information such as numeral, character.
Hole horizontal and vertical parity check code, is by combining multiple apertures in the information for specifying the positional information in region to mark needs to record.
Hole horizontal and vertical parity check code is corresponded with Quick Response Code, is respectively provided with uniqueness.
In this step, hole horizontal and vertical parity check code is drilled with each core plate by laser marker after sawing sheet fillet edging.Forming hole
, can be with holes drilled through during horizontal and vertical parity check code, can also drilling blind hole.Compared with holes drilled through mode, drilling blind hole mode has that equipment investment is small, cost
The advantages that low, efficient and the degree of automation is high.
In addition, in order to ensure that the normal of core plate makes, hole horizontal and vertical parity check code may be disposed at the edges of boards of core plate.Meanwhile in order to avoid
Interfered with each other in follow-up pressing working procedure between the hole horizontal and vertical parity check code of multiple core plates, it is necessary to be in advance every core according to the default level that stacks
Plate specifies different hole horizontal and vertical parity check codes to be drilled with region so that the hole horizontal and vertical parity check code strict partition of different layers core plate, reads easy to identify.
Step 102, carry out internal layer circuit making and internal layer AOI, and when every core plate often passes through a process equipment, leads to
The hole horizontal and vertical parity check code that CCD reads current core plate is crossed, current production relevant information is synchronized in the respective record item of server end.
Step 103, into pressing working procedure, multiple core plates are pressed to form multi-layer board；Every is first read before shipment is pressed
The hole horizontal and vertical parity check code of core plate, merges for read all well horizontal and vertical parity check code and generates corresponding unique Quick Response Code, then the Quick Response Code is changed
To be drilled with after unique hole horizontal and vertical parity check code in multiple-plate edges of boards；Meanwhile the entry corresponding to the Quick Response Code is created in server end,
The production relevant information that this process is related to is synchronized in the corresponding record item of server end.
Since the Quick Response Code for multi-layer board generation in pressing working procedure corresponds to multiple hole horizontal and vertical parity check codes, that is, correspond in multiple
The Quick Response Code of layer core plate, therefore the record information of multiple-plate Quick Response Code is the record information of the Quick Response Code of multiple core materials
Summation.
In this step, the different hole horizontal and vertical parity check codes of each core material can be disposably read by X-Ray, so can quickly be realized
The transfer of hole horizontal and vertical parity check code from the inner to the outer, simple flow, improves efficiency.
In each process equipment that every core plate/multi-layer board is applied by this process, hole horizontal and vertical parity check code is read by CCD,
And current production relevant information is synchronized in the respective record item of server end.
Step 104, before text printout process is entered, drilled according to normal technological process, the plating of heavy copper, outer layer
The operations such as circuit making, outer layer AOI and welding resistance, and when multi-layer board often passes through a process equipment, which is read by CCD
The hole horizontal and vertical parity check code of plate, current production relevant information is synchronized in the respective record item of server end.
Step 105, into text printout process, read after being baked after text printout or after welding resistance development by CCD more
Hole horizontal and vertical parity check code on laminate, before word shipment by the hole horizontal and vertical parity check code be converted to got to by laser marker after corresponding Quick Response Code it is more
The edges of boards of laminate；Meanwhile when multi-layer board often passes through a process equipment, which is read by CCD, ought
Preceding production relevant information is synchronized in the respective record item of server end.
Step 106, into follow-up other processes, including be surface-treated, be molded, electrical measurement, FQC/FQA and packaging etc.,
When multi-layer board often passes through a process equipment, the Quick Response Code on the multi-layer board is read by scanner, current production is related
Synchronizing information is into the respective record item of server end.
In above-mentioned flow, due to text printout process and its before process in, Quick Response Code because being easily overwritten or
Being corroded causes to be not easy to be identified, thus Quick Response Code is converted to hole horizontal and vertical parity check code during this period and is formed on plate；And printed in word
After dataller's sequence, dysgenic factor is produced to Quick Response Code and is disappeared, thus the present embodiment turns hole horizontal and vertical parity check code after text printout
Gain Quick Response Code to be formed on plate, Quick Response Code can quickly be read by scanner in subsequent handling.Moreover, in pressing working procedure
In, the information of each internal layer quickly can be transferred to outer layer, prevent the loss of internal layer information, be effectively guaranteed the complete of data
Property.
In whole flow process, often by a process equipment, it can read hole horizontal and vertical parity check code/Quick Response Code on plate and will produce related
For synchronizing information to server end, production relevant information can include factory's title, process title, process name, production item number, life
Produce batch number, operator's name, production line not, title/supplier/lot numbers of production time, raw material, detection data, production
The various relevant informations such as any one or any multinomial combination in parameter, thus will be obtained comprehensively completely in server end
Data, so that product lifecycle retrospect (including positive retrospect and reversely retrospect) can be realized, it is full-range to strengthen product
Character surveillance, can also realize process equipment and monitor in real time, meet the increasingly stringenter quality requirement of in the market.
The above, the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to before
Embodiment is stated the present invention is described in detail, it will be understood by those of ordinary skill in the art that：It still can be to preceding
State the technical solution described in each embodiment to modify, or equivalent substitution is carried out to which part technical characteristic；And these
Modification is replaced, and the essence of appropriate technical solution is departed from the spirit and scope of various embodiments of the present invention technical solution.
Claims (10)
1. the quality retroactive method of a kind of multi-layer PCB, it is characterised in that the quality retroactive method includes：
It is that every core plate distributes a unique Quick Response Code, after which is converted to unique hole horizontal and vertical parity check code in sawing sheet process
It is drilled with corresponding core plate；
In pressing working procedure, the hole horizontal and vertical parity check code on every core plate is read, it is corresponding unique to merge generation for read all well horizontal and vertical parity check code
Quick Response Code, then the Quick Response Code is converted to and is drilled with after unique hole horizontal and vertical parity check code on the multi-layer board that pressing is formed；
After welding resistance process, the hole horizontal and vertical parity check code on the multi-layer board is read, horizontal and vertical parity check code is beaten after being converted to corresponding Quick Response Code by the hole
Code is on multi-layer board.
2. the quality retroactive method of multi-layer PCB according to claim 1, it is characterised in that the method further includes：
In server end, corresponding entry is created for each Quick Response Code；
When the core plate/multi-layer board passes through any process equipment in whole PCB production processes, the core plate/multilayer is read
Hole horizontal and vertical parity check code or Quick Response Code on plate, current production relevant information is synchronized in the corresponding record item of server end.
3. the quality retroactive method of multi-layer PCB according to claim 2, it is characterised in that the production relevant information bag
Include：Factory's title, process title, process name, production item number, production batch number, operator's name, production line not, go into operation when
Between, title/supplier/lot numbers of raw material, detection data, any one in manufacturing parameter or any multinomial combination.
4. the quality retroactive method of multi-layer PCB according to claim 1, it is characterised in that the quality retroactive method
In sawing sheet process, it is drilled with every core plate before the horizontal and vertical parity check code of hole, difference is specified for every core plate according to its default level that stacks
Hole horizontal and vertical parity check code be drilled with region.
5. the quality retroactive method of multi-layer PCB according to claim 4, it is characterised in that described to be read in pressing working procedure
The method of hole horizontal and vertical parity check code on every core plate is：After multiple core plates are according to preset order lamination, every core plate is read by X-Ray
On hole horizontal and vertical parity check code.
6. the quality retroactive method of multi-layer PCB according to claim 1, it is characterised in that in the quality retroactive method,
Work is made in sawing sheet process, internal layer circuit production process, internal layer AOI processes, drilling operating, heavy copper electroplating work procedure, outer-layer circuit
In any one or working procedures of sequence, outer layer AOI processes, welding resistance process and text printout process, by visual identity side
Method reads the hole horizontal and vertical parity check code on every core plate or multi-layer board.
7. the quality retroactive method of multi-layer PCB according to claim 1, it is characterised in that in the core plate or multilayer
The mode that hole horizontal and vertical parity check code is drilled with plate is：According to the hole horizontal and vertical parity check code hole battle array information edges of boards specified region holes drilled through.
8. the quality retroactive method of multi-layer PCB according to claim 1, it is characterised in that in the core plate or multilayer
The mode that hole horizontal and vertical parity check code is drilled with plate is：According to the hole horizontal and vertical parity check code hole battle array information edges of boards specified region drilling blind hole.
9. the quality retroactive method of multi-layer PCB according to claim 1, it is characterised in that in the quality retroactive method,
After being baked after welding resistance development or after text printout, the hole horizontal and vertical parity check code on the multi-layer board is read, horizontal and vertical parity check code is converted to correspondence by the hole
Quick Response Code after stamp on multi-layer board.
10. the quality retroactive method of multi-layer PCB according to claim 1, it is characterised in that the quality retroactive method
In, stamp identifies Quick Response Code after on multi-layer board by scanner after hole horizontal and vertical parity check code is converted to corresponding Quick Response Code.
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| CN108857275A (en) * | 2018-06-25 | 2018-11-23 | 浙江因特物联科技有限公司 | Convenient for the processing method of the metalwork of product quality retrospect |
| CN109033917A (en) * | 2018-06-04 | 2018-12-18 | 广州美维电子有限公司 | A kind of information tracing method of pcb board and pcb board |
| CN109685524A (en) * | 2018-11-28 | 2019-04-26 | 惠州中京电子科技有限公司 | A kind of trace mode of PCB production board quality |
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| CN113543528A (en) * | 2020-04-17 | 2021-10-22 | 无锡深南电路有限公司 | Substrate processing method and apparatus |
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| CN111587066A (en) * | 2020-05-27 | 2020-08-25 | 南京泰治自动化技术有限公司 | Method for tracing information of each layer of core board after PCB manufacturing and laminating |
| CN113766724B (en) * | 2020-06-01 | 2024-04-12 | 南通深南电路有限公司 | Circuit board, manufacturing method thereof and tracing method |
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| CN113573506A (en) * | 2021-06-09 | 2021-10-29 | 深圳市升达康科技有限公司 | PCB production process and PCB circuit board |
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| CN113692128B (en) * | 2021-08-25 | 2022-11-15 | 惠州市特创电子科技股份有限公司 | Palladium removal control device and method for electroplating through hole etching line |
| WO2024098506A1 (en) * | 2022-11-10 | 2024-05-16 | 惠州市金百泽电路科技有限公司 | Method for ink-jet printing of solder resist on pcb |
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