CN108901135A - A kind of production method of non-metallic macropore - Google Patents
A kind of production method of non-metallic macropore Download PDFInfo
- Publication number
- CN108901135A CN108901135A CN201810771668.4A CN201810771668A CN108901135A CN 108901135 A CN108901135 A CN 108901135A CN 201810771668 A CN201810771668 A CN 201810771668A CN 108901135 A CN108901135 A CN 108901135A
- Authority
- CN
- China
- Prior art keywords
- metallic
- hole
- interconnecting piece
- slot unit
- production method
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- H05K3/0011—Working of insulating substrates or insulating layers
- H05K3/0044—Mechanical working of the substrate, e.g. drilling or punching
- H05K3/0047—Drilling of holes
-
- 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
- H05K3/0094—Filling or covering plated through-holes or blind plated vias, e.g. for masking or for mechanical reinforcement
-
- 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
- H05K2201/09209—Shape and layout details of conductors
- H05K2201/095—Conductive through-holes or vias
- H05K2201/0959—Plated through-holes or plated blind vias filled with insulating material
-
- 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
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/14—Related to the order of processing steps
- H05K2203/1476—Same or similar kind of process performed in phases, e.g. coarse patterning followed by fine patterning
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Drilling And Boring (AREA)
Abstract
The invention discloses a kind of production methods of non-metallic macropore comprising following steps：S1, drilling, once drill out non-metallic hole semi-finished product and through-hole, and non-metallic hole semi-finished product are made of slot unit and the interconnecting piece between slot unit；S2, dry film sealing of hole；S3, processing and forming, interconnecting piece is removed, and obtains complete non-metallic hole.Non-metallic hole is decomposed into production slot unit first, it seals after dry film and again removes the interconnecting piece between slot unit, obtain the macropore that completely metallizes, due to when sealing dry film, dry film can be attached on the interconnecting piece between slot unit, avoid the problem of dry film breakage, it is therefore prevented that be coated with copper in non-metallic hole, reduce non-metallic hole quality.Non-metallic hole is decomposed into the production of slot unit, the dimensional tolerance in non-metallic hole has been reduced to ± 0.05 by ± 0.075, has improved machining accuracy, and only needs a drilling processing, simplifies the production process in non-metallic hole, improves producing efficiency.
Description
Technical field
The invention belongs to printed circuit board production technical fields, are related to a kind of boring method, relate in particular to a kind of non-
The production method of metallization macropore.
Background technique
Printed circuit board (PCB) is the indispensable fundamental parts of electronic product, be to provide electronic component installation with mutually
Main support body when even, in order to realize the installation and interconnection of electronic component, it is often necessary to which production is different on a printed circuit board
The hole of type.
Wherein, non-metallic hole (NPTH) is for general on the company outside tighten up a screw when circuit board assembling positioning or connection
Use when connecing device, or being passed through for the connecting line of part on PCB, so this some holes is usually big compared with plated through-hole size and has size
Tolerance, also cannot copper plate, because of referred to herein as non-metallic hole, as non-metallic hole be not able to satisfy tolerance, cannot on
The requirement of copper, it is easy to cause pcb board to be scrapped, therefore also increasingly be taken seriously for the processing and fabricating in non-metallic hole.
Non-metallic hole can be circular hole, can also be slot, there are mainly two types of for production method at present：(1) first
Not upper copper in hole when being drilled out together when secondary drilling by non-metallic hole and through-hole, then realizing plating by way of dry film sealing of hole,
Achieve the purpose that non-metallic, this method production procedure is smooth, is easily managed, but is more than dry film there are non-metallic Kong Yi
Sealing of hole ability is easy breakage after dry film development, leads to upper copper in non-metallic hole, bad so as to cause pcb board quality；(2)
Non-metallic hole is not made when primary drilling, but after the etching, secondary drilling produces non-metallic punching, and this method is non-
Plated through-hole quality can be guaranteed, but increase one of drilling operating, and the same product need to drill twice, occupy drilling machine
Production capacity, make that the production process of PCB is increasingly complex, manufacturing cost increases.In addition, the manufacture craft in existing conventional non-metallic hole
In, the dimensional tolerance in non-metallic hole is larger, and precision is insufficient.
Summary of the invention
For this purpose, the present invention exactly will solve above-mentioned technical problem, to propose that a kind of manufacture craft is simple, non-metallic hole
The production method of non-metallic punching high-quality, with high accuracy.
In order to solve the above technical problems, the technical scheme is that：
The present invention provides a kind of production method of non-metallic macropore comprising following steps：
S1, drilling once drill out non-metallic hole semi-finished product and through-hole, and the non-metallic hole semi-finished product are by slot unit
And the interconnecting piece composition between the slot unit；
S2, dry film sealing of hole；
S3, processing and forming remove the interconnecting piece between slot unit, obtain complete non-metallic hole.
Preferably, the sectional view in the non-metallic hole is circle, the non-metallic hole semi-finished product of circle include
The sequentially connected arc-shaped slot unit of three head and the tail and the interconnecting piece between the arc-shaped slot unit, three circular arcs
Figure made of shape slot unit periphery encloses is overlapped with the hole wall of non-metallic hole semi-finished product.
Preferably, three arc-shaped slots unit inner circumferential encloses subcircular interconnecting piece.
Preferably, the diameter of round non-metallic hole semi-finished product is not less than 6mm.
Preferably, the diameter for the subcircular interconnecting piece that three arc-shaped inner circumferentials enclose is 2.8mm, two neighboring circular arc
The spacing of shape slot unit is 0.5mm.
Or preferably, the non-metallic hole is the strip hole that end is smooth arc, the non-metallic hole half
Finished product includes two strip slot units disposed in parallel and the interconnecting piece between the strip slot unit, and two
The external margin of strip slot unit is overlapped with the wall surface in the non-metallic hole of strip.
Preferably, the length of the non-metallic hole semi-finished product of strip is 6mm, two of them strip slot unit
Length be 3.5mm, the interconnecting piece width between two strip slot units is 1mm.
Preferably, the dry film is attached on the interconnecting piece during the step S2 dry film sealing of hole.
Preferably, the step S3 removes interconnecting piece by gong knife essence gong, the smooth non-metallic hole of circle is obtained.
The above technical solution of the present invention has the following advantages over the prior art：
The production method of non-metallic macropore of the present invention comprising following steps：S1, drilling are once drilled out non-
Plated through-hole semi-finished product and through-hole, the non-metallic hole semi-finished product are by slot unit and the interconnecting piece between the slot
Composition；S2, dry film sealing of hole；S3, processing and forming remove the interconnecting piece between slot unit, obtain complete non-metallic hole.
Non-metallic hole is decomposed into production slot unit first, seals after dry film and again removes the interconnecting piece between slot unit, obtained
Whole metallization macropore avoids dry film breakage since when sealing dry film, dry film can be attached on the interconnecting piece between slot unit
The problem of, it is therefore prevented that it is coated with copper in non-metallic hole, reduces non-metallic hole quality.And non-metallic hole is decomposed into slot
The production of hole unit, has been reduced to ± 0.05 by ± 0.075 for the dimensional tolerance in non-metallic hole, has improved machining accuracy, and with
Routine techniques is compared, it is only necessary to which a drilling processing simplifies the production process in non-metallic hole, improves producing efficiency.
Detailed description of the invention
In order to make the content of the present invention more clearly understood, it below according to specific embodiments of the present invention and combines
Attached drawing, the present invention is described in further detail, wherein
Fig. 1 is the structural schematic diagram of non-metallic hole semi-finished product described in the embodiment of the present invention 1；
Fig. 2 is the structural schematic diagram of non-metallic hole semi-finished product described in the embodiment of the present invention 2.
Appended drawing reference is expressed as in figure：1- slot unit；2- interconnecting piece.
Specific embodiment
Embodiment 1
The present embodiment provides a kind of production methods of non-metallic macropore comprising following steps：
S1, drilling once drill out non-metallic hole semi-finished product and through-hole, and the non-metallic hole semi-finished product are by slot unit
1 and interconnecting piece 2 between the slot unit 1 form, in the present embodiment, non-metallic hole semi-finished product such as Fig. 1 institute
Show, sectional view is circle, and specific manufacturing process is：Along preset non-metallic hole periphery, sequentially gong goes out three head and the tail first
Sequentially connected arc-shaped slot unit 1, there are three irregular figures for tool between the end of three arc-shaped slot units 1
Interconnecting piece, the inner circumferential of three arc-shaped slot units 1 is enclosed with a subcircular interconnecting piece, i.e., only by arc-shaped slot unit
1 gong goes out, and other parts are left interconnecting piece 2, and the periphery of three arc-shaped slot units 1 and the interconnecting piece 2 of end are synthetic into
The hole wall in round non-metallic hole.The diameter of the non-metallic hole semi-finished product of circle is not less than 6mm, round in the present embodiment
The diameter of non-metallic hole semi-finished product is 6mm, and the length of each arc-shaped slot unit 1 is 5.78mm, width 1.2mm, phase
Most narrow interconnecting piece width is 0.05mm between adjacent two arc-shaped slot units 1, at three 1 inner peripheries of arc-shaped slot unit
2 diameter of subcircular interconnecting piece is 2.8mm.
The sealing of hole ability of S2, dry film sealing of hole, the dry film are 4.0*6.0mm, without carrying out secondary drilling.
S3, processing and forming remove the interconnecting piece 2 between slot unit 1, at inner circumferential, obtain complete round nonmetallic
Change hole.
Embodiment 2
The present embodiment provides a kind of production methods of non-metallic macropore comprising following steps：
S1, drilling once drill out non-metallic hole semi-finished product and through-hole, and the non-metallic hole semi-finished product are by slot unit
1 and interconnecting piece 2 between the slot unit form, in the present embodiment, non-metallic hole semi-finished product such as Fig. 2 institute
Show, sectional view is the strip that end is smooth arc, and the specific manufacturing process of the non-metallic hole semi-finished product is：It is first
First along preset non-metallic hole two long sides inside respectively gong go out end be smooth arc strip slot unit 1, two
Between slot unit 1, the interconnecting piece 2 that end is removed by non-gong connect, an external margin of two strip slot units 1 with
The long side side wall in non-metallic hole is overlapped.In the present embodiment, the length in the non-metallic hole of strip is 6mm, and width is
4mm, the strip slot unit 1 are set to the middle part of non-metallic hole semi-finished product, the length of each strip slot unit 1
For 3.5mm, width 1.5mm, 2 width of interconnecting piece between two strip slot units 1 is 1mm.
S2, dry film sealing of hole is carried out to non-metallic hole semi-finished product using common process；
S3, processing and forming, by between strip slot unit 1, the interconnecting piece 2 at both ends remove, obtain complete nonmetallic
Change hole.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
It changes still within the protection scope of the invention.
Claims (9)
1. a kind of production method of non-metallic macropore, which is characterized in that include the following steps：
S1, drilling once drill out non-metallic hole semi-finished product and through-hole, and the non-metallic hole semi-finished product are by slot unit and position
Interconnecting piece composition between the slot unit；
S2, dry film sealing of hole；
S3, processing and forming remove the interconnecting piece between slot unit, obtain complete non-metallic hole.
2. the production method of non-metallic macropore according to claim 1, which is characterized in that the non-metallic hole is cut
Face figure is circle, and the non-metallic hole semi-finished product are including the sequentially connected arc-shaped slot unit of three head and the tail and are located at institute
State the interconnecting piece between arc-shaped slot unit, figure and non-metallic hole made of three arc-shaped slot unit peripheries enclose
The hole wall of semi-finished product is overlapped.
3. the production method of non-metallic macropore according to claim 2, which is characterized in that three arc-shaped slots
Unit inner circumferential encloses subcircular interconnecting piece.
4. the production method of non-metallic macropore according to claim 3, which is characterized in that round non-metallic Kong Bancheng
The diameter of product is not less than 6mm.
5. the production method of non-metallic macropore according to claim 4, which is characterized in that three arc-shaped inner circumferentials enclose
At the diameter of subcircular interconnecting piece be 2.8mm, the spacing of two neighboring arc-shaped slot unit is 0.5mm.
6. the production method of non-metallic macropore according to claim 1, which is characterized in that the non-metallic Kong Weiduan
Portion is the strip hole of smooth arc, and the non-metallic hole semi-finished product include two strip slot units disposed in parallel and position
Interconnecting piece between the strip slot unit, the external margin and strip of two strip slot units are non-metallic
The wall surface in hole is overlapped.
7. the production method of non-metallic macropore according to claim 6, which is characterized in that the strip is non-metallic
The length of hole semi-finished product is 6mm, and the length of two of them strip slot unit is 3.5mm, between two strip slot units
Interconnecting piece width be 1mm.
8. the production method of non-metallic macropore according to claim 2 or 6, which is characterized in that the step S2 dry film
During sealing of hole, the dry film is attached on the interconnecting piece.
9. the production method of non-metallic macropore according to claim 8, which is characterized in that the step S3 passes through gong knife
Smart gong removes interconnecting piece, obtains the smooth non-metallic hole of circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810771668.4A CN108901135B (en) | 2018-07-13 | 2018-07-13 | Method for manufacturing non-metallized macropores |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810771668.4A CN108901135B (en) | 2018-07-13 | 2018-07-13 | Method for manufacturing non-metallized macropores |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108901135A true CN108901135A (en) | 2018-11-27 |
| CN108901135B CN108901135B (en) | 2020-12-11 |
Family
ID=64349337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810771668.4A Active CN108901135B (en) | 2018-07-13 | 2018-07-13 | Method for manufacturing non-metallized macropores |
Country Status (1)
| Country | Link |
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| CN (1) | CN108901135B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110402028A (en) * | 2019-07-18 | 2019-11-01 | 胜宏科技（惠州）股份有限公司 | Method for manufacturing RRU board of communication base station |
| CN112969290A (en) * | 2021-02-02 | 2021-06-15 | 珠海杰赛科技有限公司 | Manufacturing process of PCB upper hole |
| CN114340217A (en) * | 2021-12-23 | 2022-04-12 | 苏州浪潮智能科技有限公司 | PCB (printed circuit board) metalized hole drilling structure, processing method and PCB |
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| JPH11289160A (en) * | 1998-04-03 | 1999-10-19 | Hitachi Aic Inc | Manufacture of wiring board |
| CN102438411A (en) * | 2011-09-30 | 2012-05-02 | 景旺电子（深圳）有限公司 | Manufacturing method of metallized semi-hole |
| JP5556416B2 (en) * | 2010-06-22 | 2014-07-23 | 東洋紡株式会社 | Polyimide board, metal laminated polyimide board, and printed wiring board |
| CN204425769U (en) * | 2014-12-24 | 2015-06-24 | 特新微电子（东莞）有限公司 | A kind of circuit board prebored hole structure |
| CN107949188A (en) * | 2017-11-16 | 2018-04-20 | 广东兴达鸿业电子有限公司 | Connect the circuit board processing method in hole with NPTH |
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2018
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Patent Citations (5)
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| JPH11289160A (en) * | 1998-04-03 | 1999-10-19 | Hitachi Aic Inc | Manufacture of wiring board |
| JP5556416B2 (en) * | 2010-06-22 | 2014-07-23 | 東洋紡株式会社 | Polyimide board, metal laminated polyimide board, and printed wiring board |
| CN102438411A (en) * | 2011-09-30 | 2012-05-02 | 景旺电子（深圳）有限公司 | Manufacturing method of metallized semi-hole |
| CN204425769U (en) * | 2014-12-24 | 2015-06-24 | 特新微电子（东莞）有限公司 | A kind of circuit board prebored hole structure |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110402028A (en) * | 2019-07-18 | 2019-11-01 | 胜宏科技（惠州）股份有限公司 | Method for manufacturing RRU board of communication base station |
| CN112969290A (en) * | 2021-02-02 | 2021-06-15 | 珠海杰赛科技有限公司 | Manufacturing process of PCB upper hole |
| CN114340217A (en) * | 2021-12-23 | 2022-04-12 | 苏州浪潮智能科技有限公司 | PCB (printed circuit board) metalized hole drilling structure, processing method and PCB |
| CN114340217B (en) * | 2021-12-23 | 2023-08-15 | 苏州浪潮智能科技有限公司 | PCB (printed circuit board) metalized hole drilling structure, processing method and PCB |
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| Publication number | Publication date |
|---|---|
| CN108901135B (en) | 2020-12-11 |
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