CN108990294A - A method of avoid the hole NPTH from leaking back drill - Google Patents

A method of avoid the hole NPTH from leaking back drill Download PDF

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Publication number
CN108990294A
CN108990294A CN201810999389.3A CN201810999389A CN108990294A CN 108990294 A CN108990294 A CN 108990294A CN 201810999389 A CN201810999389 A CN 201810999389A CN 108990294 A CN108990294 A CN 108990294A
Authority
CN
China
Prior art keywords
back drill
fool proof
proof point
wiring board
hole
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.)
Granted
Application number
CN201810999389.3A
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Chinese (zh)
Other versions
CN108990294B (en
Inventor
刘秋然
张惠来
危海龙
刘增辉
李加余
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Victory Giant Technology Huizhou Co Ltd
Original Assignee
Victory Giant Technology Huizhou Co Ltd
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Filing date
Publication date
Application filed by Victory Giant Technology Huizhou Co Ltd filed Critical Victory Giant Technology Huizhou Co Ltd
Priority to CN201810999389.3A priority Critical patent/CN108990294B/en
Publication of CN108990294A publication Critical patent/CN108990294A/en
Application granted granted Critical
Publication of CN108990294B publication Critical patent/CN108990294B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
    • H05K2203/02—Details related to mechanical or acoustic processing, e.g. drilling, punching, cutting, using ultrasound
    • H05K2203/0214—Back-up or entry material, e.g. for mechanical drilling
    • 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
    • H05K2203/16—Inspection; Monitoring; Aligning
    • H05K2203/163—Monitoring a manufacturing process

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Drilling And Boring (AREA)

Abstract

The present invention provides a kind of method for avoiding the hole NPTH leakage back drill, it include: when carrying out word production to wiring board, back drill hole center setting fool proof point is corresponded in piercing on face for back drill, the fool proof point is the white oil layer of annular, and back drill hole center is the center of fool proof point；The outer diameter of fool proof point is less than back drill selected by corresponding back drill hole and bores nozzle cutter diameter；Back drill is completed using control deep drilling mode in the circuit board, when back drill can remove the corresponding fool proof point in back drill hole center；AVI detection is carried out to wiring board, using the image without fool proof point on wiring board as standard when AVI is detected；If finding fool proof point when AVI is detected, judges that the back drill hole site leakage of corresponding position is bored, carry out benefit brill；If AVI does not have found fool proof point when detecting, judge without leakage back drill.

Description

A method of avoid the hole NPTH from leaking back drill
Technical field
The present invention relates to wiring board production field more particularly to a kind of methods for avoiding the hole NPTH leakage back drill.
Background technique
As wiring board technology is more and more flourishing, back drills into the sight of people, the generation of an emerging technique, to produce Product bring leap, while also causing challenge to production, and how to avoid leakage from boring back drill hole is the skill that technical staff studies always Art project.
Summary of the invention
In view of the above-mentioned problems, the present invention provides a kind of method for avoiding the hole NPTH leakage back drill, comprising:
When carrying out word production to wiring board, back drill hole center setting fool proof point is corresponded in piercing on face for back drill, it is described Fool proof point is the white oil layer of annular, and back drill hole center is the center of fool proof point；The outer diameter of fool proof point is less than corresponding back drill hole Selected back drill bores nozzle cutter diameter；
Back drill is completed using control deep drilling mode in the circuit board, when back drill can remove the corresponding fool proof point in back drill hole center It removes；
AVI detection is carried out to wiring board, using the image without fool proof point on wiring board as standard when AVI is detected；If AVI is sent out when detecting Existing fool proof point then judges that the back drill hole site leakage of corresponding position is bored, carries out benefit brill；If AVI does not have found fool proof point when detecting, sentence Disconnected no leakage back drill.
Preferably, after carrying out word production to wiring board, wiring board is formed, gong is at single PCS again using control Deep drilling mode completes back drill.
Preferably, when the back drill of selection bores cutter diameter D >=20mil of nozzle, the outer diameter of corresponding fool proof point is set as 10mil；When When the back drill of selection bores the cutter diameter 15mil < D < 20mil of nozzle, the outer diameter of corresponding fool proof point is set as 5mil.
Fool proof point is arranged by the face that pierces in back drill in the present invention, and fool proof point can be removed by boring when nozzle bores back drill hole, then be led to AVI detection is crossed, i.e. whether the automatic appearance detection of Automated Visual Inspection has in wiring board plate face to check Fool proof point exists, to judge whether there is leakage back drill hole and leak the position in back drill hole to carry out benefit brill.
Specific embodiment
The present invention will now be described in detail with reference to examples.
In the specific implementation, word production first is carried out to wiring board, for each hole NPTH to back drill, that is, non-heavy copper hole (Non PLATING Through Hole), in the setting fool proof point on face that pierces of its back drill, fool proof point is the white oil layer of annular, Back drill hole center is the center of fool proof point；When the back drill of selection bores cutter diameter D >=20mil of nozzle, outside corresponding fool proof point Diameter is set as 10mil；When the back drill of selection bores the cutter diameter 15mil < D < 20mil of nozzle, the outer diameter of corresponding fool proof point is set as 5mil； The internal diameter of fool proof point is identical as the corresponding diameter in the hole NPTH to back drill.
After carrying out word production to wiring board, wiring board is formed, gong is at single PCS again using control deep drilling mode Nozzle is bored with the back drill of selection and completes back drill, and since the outer diameter of fool proof point is less than the cutter diameter that back drill bores nozzle, when back drill can will be carried on the back The corresponding fool proof point removal in drill center position, and the outer diameter of fool proof point also should not be too small, influences subsequent detection identification；And there is leakage When back drill situation, fool proof point will remain in PCB surface.Gong bores again at single PCS can preferably consolidate route in back drill Plate, wiring board is mobile when preventing from drilling, to improve borehole accuracy.
Then carrying out AVI detection to wiring board is that the automatic appearance of Automated Visual Inspection detects, AVI Using the image without fool proof point on wiring board as standard when detection；If finding fool proof point when AVI is detected, the back of corresponding position is judged Bore position leakage is bored, and benefit brill is carried out；If AVI does not have found fool proof point when detecting, judge without leakage back drill.
Embodiments of the present invention above described embodiment only expresses, the description thereof is more specific and detailed, but can not Therefore limitations on the scope of the patent of the present invention are interpreted as, as long as skill obtained in the form of equivalent substitutions or equivalent transformations Art scheme should all be fallen within the scope and spirit of the invention.

Claims (3)

1. a kind of method for avoiding the hole NPTH leakage back drill characterized by comprising
When carrying out word production to wiring board, back drill hole center setting fool proof point is corresponded in piercing on face for back drill, it is described Fool proof point is the white oil layer of annular, and back drill hole center is the center of fool proof point；The outer diameter of fool proof point is less than corresponding back drill hole Selected back drill bores nozzle cutter diameter；
Back drill is completed using control deep drilling mode in the circuit board, when back drill can remove the corresponding fool proof point in back drill hole center It removes；
AVI detection is carried out to wiring board, using the image without fool proof point on wiring board as standard when AVI is detected；If AVI is sent out when detecting Existing fool proof point then judges that the back drill hole site leakage of corresponding position is bored, carries out benefit brill；If AVI does not have found fool proof point when detecting, sentence Disconnected no leakage back drill.
2. according to the method for avoiding leakage back drill in the hole NPTH described in claim 1, it is characterised in that: text system is being carried out to wiring board After work, wiring board is formed, gong completes back drill using control deep drilling mode again at single PCS.
3. according to the method for avoiding leakage back drill in the hole NPTH described in claim 1, it is characterised in that: when the back drill of selection bores the knife of nozzle When diameter D >=20mil, the outer diameter of corresponding fool proof point is set as 10mil；When the back drill of selection bores the cutter diameter 15mil < D < 20mil of nozzle When, the outer diameter of corresponding fool proof point is set as 5mil.
CN201810999389.3A 2018-08-30 2018-08-30 Method for preventing back drilling of NPTH hole from leaking Active CN108990294B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810999389.3A CN108990294B (en) 2018-08-30 2018-08-30 Method for preventing back drilling of NPTH hole from leaking

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810999389.3A CN108990294B (en) 2018-08-30 2018-08-30 Method for preventing back drilling of NPTH hole from leaking

Publications (2)

Publication Number Publication Date
CN108990294A true CN108990294A (en) 2018-12-11
CN108990294B CN108990294B (en) 2021-10-15

Family

ID=64547542

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810999389.3A Active CN108990294B (en) 2018-08-30 2018-08-30 Method for preventing back drilling of NPTH hole from leaking

Country Status (1)

Country Link
CN (1) CN108990294B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109982511A (en) * 2019-03-06 2019-07-05 大连崇达电子有限公司 A kind of production method convenient for detecting the PCB for whether leaking brill without copper hole
CN113286449A (en) * 2020-07-31 2021-08-20 生益电子股份有限公司 Back drilling depth control method with fool-proof function

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003318554A (en) * 2002-04-23 2003-11-07 Kobe Steel Ltd Aluminum release plate for manufacturing multilayer printed board
CN102043121A (en) * 2010-07-21 2011-05-04 北大方正集团有限公司 Detection method for circuit board back drill hole and test equipment for detecting circuit board back drill hole
CN103731972A (en) * 2012-10-15 2014-04-16 重庆方正高密电子有限公司 Detecting method of drilling depth of PCB and in-process PCB
CN205657906U (en) * 2016-03-31 2016-10-19 广州兴森快捷电路科技有限公司 Circuit board convenient to detect back drilling degree of depth

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003318554A (en) * 2002-04-23 2003-11-07 Kobe Steel Ltd Aluminum release plate for manufacturing multilayer printed board
CN102043121A (en) * 2010-07-21 2011-05-04 北大方正集团有限公司 Detection method for circuit board back drill hole and test equipment for detecting circuit board back drill hole
CN103731972A (en) * 2012-10-15 2014-04-16 重庆方正高密电子有限公司 Detecting method of drilling depth of PCB and in-process PCB
CN205657906U (en) * 2016-03-31 2016-10-19 广州兴森快捷电路科技有限公司 Circuit board convenient to detect back drilling degree of depth

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109982511A (en) * 2019-03-06 2019-07-05 大连崇达电子有限公司 A kind of production method convenient for detecting the PCB for whether leaking brill without copper hole
CN113286449A (en) * 2020-07-31 2021-08-20 生益电子股份有限公司 Back drilling depth control method with fool-proof function

Also Published As

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