KR20200139986A - the improved method of detecting poor quality coil - Google Patents

the improved method of detecting poor quality coil Download PDF

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KR20200139986A
KR20200139986A KR1020190066580A KR20190066580A KR20200139986A KR 20200139986 A KR20200139986 A KR 20200139986A KR 1020190066580 A KR1020190066580 A KR 1020190066580A KR 20190066580 A KR20190066580 A KR 20190066580A KR 20200139986 A KR20200139986 A KR 20200139986A
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coil
bobbinless
detector
scanner
bobbinless coil
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KR102223136B1 (en
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김병태
조복현
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주식회사 바이오로그디바이스
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
    • G01B11/06—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material
    • G01B11/0616—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material of coating
    • G01B11/0625—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material of coating with measurement of absorption or reflection
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
    • G01N2021/8854—Grading and classifying of flaws
    • G01N2021/888—Marking defects
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
    • G01N2021/8887—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges based on image processing techniques

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  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)

Abstract

The present invention aims to provide an improved method of detecting a defect in a bobbinless coil, which comprises: (1) a coil aligning step for placing and aligning the bobbinless coil on a conveyor belt; (2) a coil moving step for moving the bobbinless coil to a detector (100) by driving the conveyor belt; (3) a scanning step for driving a 3D scanner (110) of the detector (100) to scan an exterior of the bobbinless coil; (4) a data storing step for storing 3D data acquired through the 3D scanner (110) in a storage module; and (5) a determining step for determining whether there is a defect or not by comparing the 3D data with an allowable error in an analysis module.

Description

개량형 코일 불량 검출 방법{the improved method of detecting poor quality coil} The improved method of detecting poor quality coil}

본 발명은 종래에는 보빈리스 코일(Bobinless Coil)의 불량을 검출하기 위해서 육안검사에 머물던 한계를 극복하기 위하여 3D스캐너를 이용한 3D데이터를 이용하여 보다 정확하고 신속하게 불량을 검출하는 개량형 코일 불량 검출 방법에 관한 것이다.The present invention is an improved coil defect detection method that detects defects more accurately and quickly using 3D data using a 3D scanner in order to overcome the limitation of visual inspection to detect defects of a bobbinless coil in the prior art. It is about.

도 1은 보빈리스 코일(Bobinless Coil)을 도시한 것이다.1 shows a bobbinless coil.

도 1에 도시된 바와 같이, 보빈리스 코일(Bobinless Coil)은 PCB 상부에 코일이 감긴 상태로 출시된다.As shown in FIG. 1, a bobbinless coil is released with a coil wound on a PCB.

종래에는 보빈리스 코일(Bobinless Coil)의 불량을 검출하기 위해서 검사자의 육안으로 검사하는 방법만 존재한다.Conventionally, there is only a method of inspecting with the naked eye of an inspector in order to detect a defect of a bobbinless coil.

상기 육안검사는 검사자의 숙련도에 따라 오차가 심하게 발생하며 비용과 시간이 많이 소요되는 문제점이 지적되어 왔다.It has been pointed out that the visual inspection causes severe errors according to the proficiency of the inspector, and takes a lot of cost and time.

이에 본 발명자는 종래에는 보빈리스 코일(Bobinless Coil)의 불량을 검출하기 위해서 육안검사에 머물던 한계를 극복하기 위하여 3D스캐너를 이용한 3D데이터를 이용하여 보다 정확하고 신속하게 불량을 검출하는 개량형 코일 불량 검출 방법을 개발하기에 이르렀다.Accordingly, the present inventor has improved coil defect detection that detects defects more accurately and quickly using 3D data using a 3D scanner in order to overcome the limitation of visual inspection to detect defects of bobbinless coils in the past. Came to develop a method.

[문헌 1] 대한민국 등록실용신안 실1995-0002494 ‘불량 코일 인출기’, 1995년04월06일[Document 1] Republic of Korea Utility Model Registration 1995-0002494 ‘Defective Coil Dispenser’, April 6, 1995 [문헌 2] 대한민국 등록특허 제10-0862776호 ‘텐션릴상의 불량코일 인출장치’, 2008년10월02일[Document 2] Korean Patent Registration No. 10-0862776'Defective coil withdrawal device on tension reel', October 2, 2008

본 발명은 상기한 바와 같은 종래의 제반 문제점을 해소하기 위해서 제시되는 것이다. 그 목적은 종래에 보빈리스 코일(Bobinless Coil)의 불량을 검출하기 위해서 육안검사에 머물던 한계를 극복하기 위하여 3D스캐너를 이용한 3D데이터를 이용하여 보다 정확하고 신속하게 불량을 검출하는 개량형 코일 불량 검출 방법를 제공하고자 한다. The present invention is presented to solve the problems of the prior art as described above. Its purpose is to provide an improved coil defect detection method that detects defects more accurately and quickly using 3D data using a 3D scanner in order to overcome the limitations of visual inspection to detect defects of a bobbinless coil. I want to provide.

상기한 기술적 과제를 해결하기 위해 본 발명은 보빈리스 코일(Bobinless Coil)의 불량을 검출하기 위한 것으로,In order to solve the above technical problem, the present invention is for detecting a defect in a bobbinless coil,

(1) 컨베이어 벨트 위에 상기 보빈리스 코일(Bobinless Coil)을 거치하여 정렬하는 코일정렬단계;(1) a coil alignment step of mounting and aligning the bobbinless coil on a conveyor belt;

(2) 상기 컨베이어 벨트를 구동하여 검출기(100)로 상기 보빈리스 코일(Bobinless Coil)을 이동시키는 코일이동단계;(2) a coil moving step of moving the bobbinless coil to the detector 100 by driving the conveyor belt;

(3) 상기 검출기(100)의 3D스캐너(110)를 구동하여 상기 보빈리스 코일(Bobinless Coil)의 외형을 스캔하는 스캔단계;(3) a scanning step of driving the 3D scanner 110 of the detector 100 to scan the outer shape of the bobbinless coil;

(4) 상기 3D스캐너(110)를 통해 취득된 3D데이터를 저장모듈에 저장하는 데이터저장단계;(4) a data storage step of storing the 3D data acquired through the 3D scanner 110 in a storage module;

(5) 분석모듈에서 상기 3D데이터를 허용오차와 비교하여 불량여부를 판별하는 판별단계;(5) a determination step of determining whether or not there is a defect by comparing the 3D data with a tolerance in the analysis module;

를 포함하여 구성되는 것을 특징으로 하는 개량형 코일 불량 검출 방법을 제공한다.It provides an improved coil defect detection method, characterized in that configured to include.

본 발명에 따르면 종래에 보빈리스 코일(Bobinless Coil)의 불량을 검출하기 위해서 육안검사에 머물던 한계를 극복하기 위하여 3D스캐너를 이용한 3D데이터를 이용하여 보다 정확하고 신속하게 불량을 검출하는 개량형 코일 불량 검출 방법를 제공한다. According to the present invention, an improved coil defect detection that detects defects more accurately and quickly using 3D data using a 3D scanner in order to overcome the limitation of visual inspection in order to detect defects of a bobbinless coil in the prior art. Provides a way.

도 1은 보빈리스 코일(Bobinless Coil)을 도시한 것이다.
도 2는 본 발명에 사용되는 보빈리스 코일(Bobinless Coil)의 거치를 위한 상부 고정케이스와 하부 고정 케이스를 도시한 것이다.
도 3은 본 발명에 사용되는 검출기를 도시한 것이다.
도 4는 본 발명에서 3D스캐너(110)가 취득하는 3D데이터의 실시예를 도시한 것이다.
도 5는 본 발명에서 두께측정기가 구동되는 원리를 설명한 것이다.
도 6은 도 4에서 취득된 3D데이터를 엑셀시트로 정리한 것이다.1 shows a bobbinless coil.
2 shows an upper fixing case and a lower fixing case for mounting a bobbinless coil used in the present invention.
Figure 3 shows a detector used in the present invention.
4 shows an embodiment of 3D data acquired by the 3D scanner 110 in the present invention.
Figure 5 illustrates the principle of driving the thickness gauge in the present invention.
6 is an excel sheet of 3D data acquired in FIG. 4.

이하 첨부한 도면과 함께 상기와 같은 본 발명의 개념이 바람직하게 구현된 실시예를 통하여 본 발명을 더욱 상세하게 설명한다. Hereinafter, the present invention will be described in more detail through embodiments in which the concept of the present invention as described above is preferably implemented together with the accompanying drawings.

본 발명의 개량형 코일 불량 검출 방법은,The improved coil defect detection method of the present invention,

보빈리스 코일(Bobinless Coil)의 불량을 검출하기 위한 것으로,This is to detect defects in the bobbinless coil,

(1) 컨베이어 벨트 위에 상기 보빈리스 코일(Bobinless Coil)을 거치하여 정렬하는 코일정렬단계;(1) a coil alignment step of placing and aligning the bobbinless coil on a conveyor belt;

(2) 상기 컨베이어 벨트를 구동하여 검출기(100)로 상기 보빈리스 코일(Bobinless Coil)을 이동시키는 코일이동단계;(2) a coil moving step of moving the bobbinless coil to the detector 100 by driving the conveyor belt;

(3) 상기 검출기(100)의 3D스캐너(110)를 구동하여 상기 보빈리스 코일(Bobinless Coil)의 외형을 스캔하는 스캔단계;(3) a scanning step of driving the 3D scanner 110 of the detector 100 to scan the outer shape of the bobbinless coil;

(4) 상기 3D스캐너(110)를 통해 취득된 3D데이터를 저장모듈에 저장하는 데이터저장단계;(4) a data storage step of storing the 3D data acquired through the 3D scanner 110 in a storage module;

(5) 분석모듈에서 상기 3D데이터를 허용오차와 비교하여 불량여부를 판별하는 판별단계;(5) a determination step of determining whether or not there is a defect by comparing the 3D data with a tolerance in the analysis module;

를 포함하여 구성되는 것을 특징으로 한다.It characterized in that it is configured to include.

도 2는 본 발명에 사용되는 보빈리스 코일(Bobinless Coil)의 거치를 위한 상부 고정케이스와 하부 고정 케이스를 도시한 것이다.2 shows an upper fixing case and a lower fixing case for mounting a bobbinless coil used in the present invention.

상기 (1) 코일정렬단계;에서는 도 2에 도시된 바와 같이, 상부 고정케이스(210)와 하부 고정 케이스(230) 사이에 다수개의 보빈리스 코일(Bobinless Coil)을 삽입 설치하여, 보빈리스 코일(Bobinless Coil)의 움직임을 방지하므로, 다수개의 보빈리스 코일(Bobinless Coil)을 한 번에 정확히 스캔할 수 있는 특징이 있다.In the (1) coil alignment step; as shown in FIG. 2, by inserting and installing a plurality of bobbinless coils between the upper fixed case 210 and the lower fixed case 230, the bobbinless coil ( Since the movement of the bobinless coil) is prevented, a plurality of bobbinless coils can be accurately scanned at once.

도 3은 본 발명에 사용되는 검출기를 도시한 것이다.Figure 3 shows a detector used in the present invention.

도 3에 도시된 바와 같이, 상기 검출기(100)는 자동화를 위하여 컨베이어 벨트가 구동하게 되며, 상부에 3D스캐너(110)와 두께측정기(미도시)가 설치되게 된다. As shown in Fig. 3, the detector 100 is driven by a conveyor belt for automation, and a 3D scanner 110 and a thickness gauge (not shown) are installed on the top.

도 4는 본 발명에서 3D스캐너(110)가 취득하는 3D데이터의 실시예를 도시한 것이다.4 shows an embodiment of 3D data acquired by the 3D scanner 110 in the present invention.

도 4(a)에 도시된 바와 같이, 보빈리스 코일(Bobinless Coil)은 인접하여 감겨 생산된다.As shown in Fig. 4(a), a bobbinless coil is produced by being wound adjacently.

따라서 본 발명에서 3D스캐너(110)는 상기 보빈리스 코일(Bobinless Coil)의 감겨진 외형을 스캔하게 된다. Accordingly, in the present invention, the 3D scanner 110 scans the wound outer shape of the bobbinless coil.

이때 도 4(b)에 도시된 바와 같이, 보빈리스 코일(Bobinless Coil)의 높이(H), 폭(D), 인접하는 보빈리스 코일(Bobinless Coil) 상호간의 간격(W) 그리고 도시되지는 않았으나 보빈리스 코일(Bobinless Coil) 표면의 평활도 등을 스캔하여 3D데이터로 저장하고,At this time, as shown in FIG. 4(b), the height (H) and width (D) of the bobbinless coil, the distance between adjacent bobbinless coils (W), and not shown Scans the smoothness of the surface of the bobbinless coil and saves it as 3D data,

저장된 3D데이터를 미리 설정된 오차범위와 비교한다.The stored 3D data is compared with a preset error range.

본 발명은 상기 (5) 판별단계; 후에,The present invention is the (5) determination step; after,

(6) 불량으로 판별될 경우 상기 보빈리스 코일(Bobinless Coil)에 마킹(marking)하는 불량표시단계;(6) a defect display step of marking the bobbinless coil when it is determined to be defective;

를 더 포함하는 것을 특징으로 한다.It characterized in that it further comprises.

상기 검출기(100)에 별도의 마킹장치가 설치되며, A separate marking device is installed on the detector 100,

상기 마킹(marking) 방법으로는 잉크, 레이저 등을 사용한 방법을 사용하며, 도트(dot) 방식을 사용할 수 도 있다.As the marking method, a method using ink, laser, or the like is used, and a dot method may be used.

도 5는 본 발명에서 두께측정기가 구동되는 원리를 설명한 것이다.Figure 5 illustrates the principle of driving the thickness gauge in the present invention.

상기 검출기(100)에는 상기 보빈리스 코일(Bobinless Coil)의 외면에 도포된 에나멜층(B2)의 두께를 측정하는 두께측정기(미도시)가 설치되어,A thickness measuring device (not shown) for measuring the thickness of the enamel layer B2 applied to the outer surface of the bobbinless coil is installed in the detector 100,

(3) 스캔단계;에서, 상기 두께측정기(미도시)를 통한 상기 에나멜층(B2)의 두께를 측정하는 것을 특징으로 한다.In (3) scanning step; characterized in that the thickness of the enamel layer (B2) is measured through the thickness measuring device (not shown).

상기 두께측정기(미도시)는 도 5에 도시된 바와 같이, 레이저 또는 일정 파장의 빛 등을 조사하여 상기 보빈리스 코일(Bobinless Coil) 내부의 구리층(B1)과 상기 구리층(B1)에 코팅된 에나멜층(B2)의 반사율과 굴절률 차이를 이용하여 상기 에나멜층(B2)의 두께를 측정하므로써 상기 에나멜층(B2)의 불량을 검사하게 된다.The thickness gauge (not shown) is coated on the copper layer (B1) and the copper layer (B1) inside the bobbinless coil by irradiating a laser or light of a certain wavelength, as shown in FIG. The defect of the enamel layer B2 is inspected by measuring the thickness of the enamel layer B2 using the difference in reflectance and refractive index of the enamel layer B2.

도 6은 도 4에서 취득된 3D데이터를 엑셀시트로 정리한 것이다.6 is an excel sheet of 3D data acquired in FIG. 4.

도시된 바와 같이, 본 발명은 취득된 3D데이터를 가지고 다수개의 보빈리스 코일(Bobinless Coil)의 이력관리가 가능하다.As shown, the present invention enables history management of a plurality of bobbinless coils with the acquired 3D data.

결론으로 본 발명은 종래에 보빈리스 코일(Bobinless Coil)의 불량을 검출하기 위해서 육안검사에 머물던 한계를 극복하기 위하여 3D스캐너를 이용한 3D데이터를 이용하여 보다 정확하고 신속하게 불량을 검출하는 개량형 코일 불량 검출 방법를 제공하는 특징이 있다.In conclusion, the present invention is an improved coil defect that detects defects more accurately and quickly using 3D data using a 3D scanner in order to overcome the limitations of the conventional visual inspection to detect defects of a bobbinless coil. There is a feature that provides a detection method.

본 발명은 상기에서 언급한 바와 같이 바람직한 실시예와 관련하여 설명되었으나, 본 발명의 요지를 벗어남이 없는 범위 내에서 다양한 수정 및 변형이 가능하며, 다양한 분야에서 사용 가능하다. The present invention has been described in connection with a preferred embodiment as mentioned above, but various modifications and variations can be made without departing from the gist of the present invention, and can be used in various fields.

따라서 본 발명의 청구범위는 이건 발명의 진정한 범위 내에 속하는 수정 및 변형을 포함한다.Accordingly, the claims of the present invention include modifications and variations that fall within the true scope of the invention.

B: 보빈리스 코일(Bobinless Coil)
B1: 구리층
B2: 에나멜층
100: 검출기
110: 3D스캐너
210: 상부 고정케이스
230: 하부 고정케이스B: Bobbinless Coil
B1: copper layer
B2: enamel layer
100: detector
110: 3D scanner
210: upper fixed case
230: lower fixed case

Claims (3)

보빈리스 코일(Bobinless Coil)의 불량을 검출하기 위한 것으로,
(1) 컨베이어 벨트 위에 상기 보빈리스 코일(Bobinless Coil)을 거치하여 정렬하는 코일정렬단계;
(2) 상기 컨베이어 벨트를 구동하여 검출기(100)로 상기 보빈리스 코일(Bobinless Coil)을 이동시키는 코일이동단계;
(3) 상기 검출기(100)의 3D스캐너(110)를 구동하여 상기 보빈리스 코일(Bobinless Coil)의 외형을 스캔하는 스캔단계;
(4) 상기 3D스캐너(110)를 통해 취득된 3D데이터를 저장모듈에 저장하는 데이터저장단계;
(5) 분석모듈에서 상기 3D데이터를 허용오차와 비교하여 불량여부를 판별하는 판별단계;
를 포함하여 구성되는 것을 특징으로 하는 개량형 코일 불량 검출 방법.
This is to detect defects in the bobbinless coil,
(1) a coil alignment step of placing and aligning the bobbinless coil on a conveyor belt;
(2) a coil moving step of moving the bobbinless coil to the detector 100 by driving the conveyor belt;
(3) a scanning step of driving the 3D scanner 110 of the detector 100 to scan the outer shape of the bobbinless coil;
(4) a data storage step of storing the 3D data acquired through the 3D scanner 110 in a storage module;
(5) a determination step of determining whether or not there is a defect by comparing the 3D data with a tolerance in the analysis module;
Improved coil failure detection method, characterized in that configured to include.
 제1항에서,
상기 (5) 판별단계; 후에,
(6) 불량으로 판별될 경우 상기 보빈리스 코일(Bobinless Coil)에 마킹(marking)하는 불량표시단계;
를 더 포함하는 것을 특징으로 하는 개량형 코일 불량 검출 방법.
In claim 1,
The (5) determination step; after,
(6) a defect display step of marking the bobbinless coil when it is determined to be defective;
An improved coil failure detection method, characterized in that it further comprises.
 제1항에서,
상기 검출기(100)에는 상기 보빈리스 코일(Bobinless Coil)의 외면에 도포된 에나멜층(B2)의 두께를 측정하는 두께측정기(미도시)가 설치되어,
(3) 스캔단계;에서, 상기 두께측정기(미도시)를 통한 상기 에나멜층(B2)의 두께를 측정하는 것을 특징으로 하는 개량형 코일 불량 검출 방법.




In claim 1,
A thickness measuring device (not shown) for measuring the thickness of the enamel layer B2 applied to the outer surface of the bobbinless coil is installed in the detector 100,
(3) In the scanning step; the improved coil defect detection method, characterized in that measuring the thickness of the enamel layer (B2) through the thickness measuring device (not shown).
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0514816U (en) * 1991-08-05 1993-02-26 昭和電線電纜株式会社 Multi-wire outer diameter measuring device
KR950002494A (en) 1993-06-03 1995-01-04 모리시타 요이찌 Image playback device and image decoding device
KR100862776B1 (en) 2002-07-23 2008-10-13 주식회사 포스코 An apparatus for extracting a bad coil from a tension reel
KR20130012384A (en) * 2011-07-25 2013-02-04 (주)그림 System for marking defective sign and apparatus using the same
KR101627573B1 (en) * 2015-10-08 2016-06-07 에스에스오트론 주식회사 Internal type antenna inspection apparatus
KR20190027149A (en) * 2017-09-06 2019-03-14 정성욱 Automatic inspection system of soldering state of Voice Coil Motor type lens actuator and High Temperature Co-fired Ceramic board

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0514816U (en) * 1991-08-05 1993-02-26 昭和電線電纜株式会社 Multi-wire outer diameter measuring device
KR950002494A (en) 1993-06-03 1995-01-04 모리시타 요이찌 Image playback device and image decoding device
KR100862776B1 (en) 2002-07-23 2008-10-13 주식회사 포스코 An apparatus for extracting a bad coil from a tension reel
KR20130012384A (en) * 2011-07-25 2013-02-04 (주)그림 System for marking defective sign and apparatus using the same
KR101627573B1 (en) * 2015-10-08 2016-06-07 에스에스오트론 주식회사 Internal type antenna inspection apparatus
KR20190027149A (en) * 2017-09-06 2019-03-14 정성욱 Automatic inspection system of soldering state of Voice Coil Motor type lens actuator and High Temperature Co-fired Ceramic board

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