CN105258651B - PCB warpage detection method - Google Patents
PCB warpage detection method Download PDFInfo
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- CN105258651B CN105258651B CN201510753289.9A CN201510753289A CN105258651B CN 105258651 B CN105258651 B CN 105258651B CN 201510753289 A CN201510753289 A CN 201510753289A CN 105258651 B CN105258651 B CN 105258651B
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- pcb
- pcb board
- anchor points
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- hypotenuse
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Abstract
The invention discloses a PCB warpage detection method, which comprises the following steps: A) arranging three PCB positioning points on the PCB; B) when the PCB is conveyed to the conveying guide rail, the sampling equipment takes pictures and samples the PCB, and transmits the sampled pictures to the calculation and comparison system; C) the calculation and comparison system calculates the triangular area or the side length of the bevel edge surrounded by the three PCB locating points on the PCB; D) and E) when the side length of a triangular area or a bevel edge surrounded by three PCB locating points of the three points on the PCB is less than the length of a fixed triangular area or a bevel edge set by the system, judging that the PCB is deformed. The method is easy to implement, has simple steps, can reduce defective products and reduces the production cost.
Description
Technical field
The present invention relates to the printing technology of pcb board, more particularly to a kind of pcb board buckling deformation detection method.
Background technology
At present, it is, by the way that just conductive silver is printed in face in pcb board, to make PCB in the printing technology of existing pcb board
Plate is conductive, and pcb board is before printing, if do not detected to it, is not knowing whether is pcb board that conveying comes
Printed in the case of for certified products, the pcb board printed is likely to be just defective products, therefore, printing pcb board it
It is preceding just to can guarantee that pcb board that conveying comes is certified products, it is necessary to first test the PCB that comes of conveying, but present PCB
There is no test function on the printing machine of plate.
The content of the invention
The purpose of the present invention is that there is provided a kind of pcb board buckling deformation detection method for the drawbacks described above of prior art.
To solve the drawbacks described above of prior art, the technical scheme that the present invention is provided is：A kind of pcb board buckling deformation detection
Method, comprises the following steps：
A）Three PCB anchor points are set on pcb board；
B）When pcb board is delivered on conveying, sampling equipment carries out sampling of taking pictures to pcb board, by the photo of sampling
It is sent on calculating comparison system；
C）The triangle area or the hypotenuse length of side that calculating comparison system is surrounded to three PCB anchor points on pcb board are counted
Calculate；
D）Data comparison, the triangle area or the hypotenuse length of side and system that 3 points on pcb board of three PCB anchor points are surrounded
The fixed triangle area or the hypotenuse length of side of setting are contrasted；
E）When the triangle area or the hypotenuse length of side that 3 points on pcb board of three PCB anchor points are surrounded are less than what system was set
When fixed triangle area or the hypotenuse length of side, then it is determined as that the pcb board is deformed, if 3 points of three PCB anchor points are surrounded on pcb board
Triangle area or the hypotenuse length of side be equal to fixed triangle area that system sets or during the hypotenuse length of side, then be determined as that the pcb board is
Certified products.
Improved as one kind of pcb board buckling deformation detection method of the present invention, three PCB anchor points on the pcb board
The triangle surrounded is right angled triangle.
Improved as one kind of pcb board buckling deformation detection method of the present invention in C）Walk the calculating of the hypotenuse length of side
Method is the hypotenuse computational methods of right angled triangle, and formula is：Straight flange a2+ straight flange b2=hypotenuse c2。
Improved as one kind of pcb board buckling deformation detection method of the present invention, C）Walk three of 3 points on the pcb board
The algorithm for the triangle area that PCB anchor points are surrounded is the areal calculation formula of triangle.
Improved as one kind of pcb board buckling deformation detection method of the present invention, B）It is fixed that the described conveying of step includes
Guide rail and adjustable dynamic guide rail, the dynamic guide rail are driven by a servomotor, when pcb board is put into conveying, servo
Motor drives dynamic guide rail regulation with determining the distance between guide rail, makes to determine guide rail and dynamic guide rail clamps pcb board.
Improved as one kind of pcb board buckling deformation detection method of the present invention, A）Walk and three are set on the pcb board
The two of which PCB anchor points of PCB anchor points are in the same side, and another PCB anchor point is in other side.
Compared with prior art, it is an advantage of the invention that：Present invention employs three PCB anchor points, three PCB anchor points
A right angled triangle is surrounded, hypotenuse is calculated by computing system, if the length of the hypotenuse calculated
During the fixation hypotenuse length of side set less than system, then it is determined as that the pcb board is deformed, if 3 points of three PCB anchor points on pcb board
When the hypotenuse length of side surrounded is equal to the fixation hypotenuse length of side that system is set, then it is certified products to be determined as the pcb board, can be with
Printed.This method implements easy, and step is simple, it is possible to reduce defective products, reduces production cost.
Embodiment
Just according to specific embodiment, the invention will be further described below, but embodiments of the invention are not limited to this.
Embodiment one：A kind of pcb board buckling deformation detection method, comprises the following steps：
A）Three PCB anchor points are set on pcb board；
B）When pcb board is delivered on conveying, sampling equipment carries out sampling of taking pictures to pcb board, by the photo of sampling
It is sent on calculating comparison system；
C）Comparison system is calculated to calculate the triangle hypotenuse c length of sides that three PCB anchor points on pcb board are surrounded；
D）Data comparison, the triangle hypotenuse c length of sides that 3 points on pcb board of three PCB anchor points are surrounded are set with system
The fixed triangle hypotenuse c length of sides contrasted；
E）When the triangle area or the hypotenuse length of side that 3 points on pcb board of three PCB anchor points are surrounded are less than what system was set
During the fixed triangle hypotenuse c length of sides, then it is determined as that the pcb board is deformed, if 3 points of three PCB anchor points are surrounded on pcb board three
When the angle hypotenuse c length of sides are equal to the fixed triangle hypotenuse c length of sides that system is set, then it is certified products to be determined as the pcb board.
It is preferred that, the triangle that three PCB anchor points on pcb board are surrounded is right angled triangle.
It is preferred that, C）The computational methods for walking the hypotenuse length of side are the hypotenuse computational methods of right angled triangle, and formula is：Straight flange
a2+ straight flange b2=hypotenuse c2。
It is preferred that, B）The conveying of step includes determining guide rail and adjustable dynamic guide rail, moves guide rail and passes through servo electricity
Machine drives, when pcb board is put into conveying, and servomotor drives dynamic guide rail regulation with determining the distance between guide rail, makes to lead surely
Rail and dynamic guide rail clamp pcb board.
It is preferred that, A）The two of which PCB anchor points of three PCB anchor points of setting on pcb board are walked in the same side, it is another
Each and every one PCB anchor points are in other side.
Present invention employs three PCB anchor points, three PCB anchor points surround a right angled triangle, are by calculating
System is calculated hypotenuse c, the fixation hypotenuse length of side that the hypotenuse c length calculated is set if less than system
When, then it is determined as that the pcb board is deformed, if the hypotenuse c length of sides that 3 points of three PCB anchor points are surrounded on pcb board are equal to
During the fixation hypotenuse c length of sides that system is set, then it is certified products to be determined as the pcb board, be can be printed.This method is implemented to hold
Easily, step is simple, it is possible to reduce defective products, reduces production cost.
Embodiment two：A kind of pcb board buckling deformation detection method, comprises the following steps：
A）Three PCB anchor points are set on pcb board；
B）When pcb board is delivered on conveying, sampling equipment carries out sampling of taking pictures to pcb board, by the photo of sampling
It is sent on calculating comparison system；
C）The triangle area s that calculating comparison system is surrounded to three PCB anchor points on pcb board is calculated；Calculate
Formula is：Base a × high h ÷ 2=areas s；
D）Data comparison, by 3 points on pcb board of three PCB anchor points the triangle area s surrounded and consolidating that system is set
Determine triangle area to be contrasted；
E）When the triangle area that 3 points on pcb board of three PCB anchor points are surrounded is less than the fixed triangle face that system is set
During product s, then it is determined as that the pcb board is deformed, is if the triangle area s that 3 points of three PCB anchor points are surrounded on pcb board is equal to
During the fixed triangle area s that system is set, then it is certified products to be determined as the pcb board.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of changes, modification can be carried out to these embodiments in the case where not departing from the principle and structure of the present invention, replace by understanding
And modification, the scope of the present invention limits by appended claims and its equivalency range.
Claims (6)
1. a kind of pcb board buckling deformation detection method, it is characterised in that comprise the following steps：
A）Three PCB anchor points are set on pcb board；
B）When pcb board is delivered on conveying, sampling equipment carries out sampling of taking pictures to pcb board, and the photo of sampling is transmitted
To calculating comparison system；
C）The triangle area or the hypotenuse length of side that calculating comparison system is surrounded to three PCB anchor points on pcb board are calculated；
D）Data comparison, the triangle area or the hypotenuse length of side that 3 points on pcb board of three PCB anchor points are surrounded is set with system
Fixed triangle area or the hypotenuse length of side contrasted；
E）When the triangle area or the hypotenuse length of side that 3 points on pcb board of three PCB anchor points are surrounded are less than the fixation that system is set
When triangle area or the hypotenuse length of side, then it is determined as that the pcb board is deformed, if 3 points of three PCB anchor points are surrounded on pcb board three
When edged surface is accumulated or the hypotenuse length of side is equal to fixed triangle area or the hypotenuse length of side that system is set, then it is qualified to be determined as the pcb board
Product.
2. pcb board buckling deformation detection method according to claim 1, it is characterised in that three on the pcb board
The triangle that PCB anchor points are surrounded is right angled triangle.
3. pcb board buckling deformation detection method according to claim 2, it is characterised in that C）Walk the hypotenuse length of side
Computational methods be right angled triangle hypotenuse computational methods, formula is：Straight flange a2+ straight flange b2=hypotenuse c2。
4. pcb board buckling deformation detection method according to claim 1, it is characterised in that C）Walk three on the pcb board
The algorithm for the triangle area that three PCB anchor points of point are surrounded is the areal calculation formula of triangle.
5. pcb board buckling deformation detection method according to claim 1, it is characterised in that B）The described conveying of step is led
Rail includes determining guide rail and adjustable dynamic guide rail, and the dynamic guide rail is driven by a servomotor, when pcb board is put into conveying
When, servomotor drives dynamic guide rail regulation with determining the distance between guide rail, makes to determine guide rail and dynamic guide rail clamps pcb board.
6. pcb board buckling deformation detection method according to claim 1, it is characterised in that A）Walk and set on the pcb board
The two of which PCB anchor points of three PCB anchor points are put in the same side, another PCB anchor point is in other side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510753289.9A CN105258651B (en) | 2015-11-05 | 2015-11-05 | PCB warpage detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510753289.9A CN105258651B (en) | 2015-11-05 | 2015-11-05 | PCB warpage detection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105258651A CN105258651A (en) | 2016-01-20 |
| CN105258651B true CN105258651B (en) | 2017-10-24 |
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ID=55098437
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510753289.9A Active CN105258651B (en) | 2015-11-05 | 2015-11-05 | PCB warpage detection method |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112478370A (en) * | 2020-11-17 | 2021-03-12 | 昆山国显光电有限公司 | Tray, warpage detection system and warpage detection method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITTO20090509A1 (en) * | 2009-07-07 | 2011-01-08 | Sintesi Scpa | SYSTEM AND PROCEDURE FOR THE MEASUREMENT OF DEFORMATIONS, AND ITS COMPUTER ITEM |
| CN103115590A (en) * | 2013-01-25 | 2013-05-22 | 浪潮电子信息产业股份有限公司 | PCB (printed circuit board) smoothness detection method |
| CN203163701U (en) * | 2013-02-01 | 2013-08-28 | 东莞市荣旭自动化科技有限公司 | High-precision terminal flatness detector |
| CN203259127U (en) * | 2013-05-13 | 2013-10-30 | 昱鑫科技(苏州)有限公司 | Measuring instrument for detecting internal circuit of PCB board |
| CN103673934A (en) * | 2013-12-31 | 2014-03-26 | 中国矿业大学 | Method for detecting planeness of PCB based on network projection |
| CN104236892A (en) * | 2014-10-08 | 2014-12-24 | 东方电气集团东方汽轮机有限公司 | Method for testing wind turbine blade static force loading vertical displacement and deformation |
| CN204359276U (en) * | 2014-10-29 | 2015-05-27 | 陕西彩虹电子玻璃有限公司 | A kind of glass substrate wrapping image automatic on-line pick-up unit |
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| CN105258651A (en) | 2016-01-20 |
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Address after: 523427 Building 2, No. 11, Jinfu West Road, Tangchun, Liaobu Town, Dongguan City, Guangdong Province Patentee after: Guangdong kelongwei Intelligent Equipment Co.,Ltd. Patentee after: South China University of Technology Address before: Shi Bu Cun Shi Da Lu, Liaobu Town, Dongguan City, Guangdong Province Patentee before: FOLUNGWIN AUTOMATIC EQUIPMENT Co.,Ltd. Patentee before: South China University of Technology |
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Effective date of registration: 20220510 Address after: 523427 Building 2, No. 11, Jinfu West Road, Tangchun, Liaobu Town, Dongguan City, Guangdong Province Patentee after: Guangdong kelongwei Intelligent Equipment Co.,Ltd. Address before: 523427 Building 2, No. 11, Jinfu West Road, Tangchun, Liaobu Town, Dongguan City, Guangdong Province Patentee before: Guangdong kelongwei Intelligent Equipment Co.,Ltd. Patentee before: South China University of Technology |